WO2006101230A1

WO2006101230A1 - Radiation image acquisition system, cassette, console, radiation image communication system, and program

Info

Publication number: WO2006101230A1
Application number: PCT/JP2006/306143
Authority: WO
Inventors: Yasuaki Tamakoshi
Original assignee: Konica Minolta Medical & Graphic, Inc.
Priority date: 2005-03-25
Filing date: 2006-03-27
Publication date: 2006-09-28
Also published as: JPWO2006101230A1

Abstract

A radiation image communication system includes: a radiation image acquisition device having radiation image acquisition means for obtaining radiation image data by radiation imaging, encryption processing means for obtaining encrypted data from image data based on the acquired radiation image data, and communication means for obtaining a data signal from the data based on the data encrypted and transmitting it by the radio communication; a console having console communication means for receiving the transmitted data signal and obtaining the encrypted data, decryption means for decrypting the data based on the encrypted data, and image storage means for storing image data based on the radiation image data.

Description

Specification

Radiation image acquisition system, cassette, console, radiation image communication system and program

Technical field

The present invention relates to a radiation image acquisition system, a cassette, a console, a radiation image communication system, and a program.

Background art

[0002] For radiography using X-rays or other radiation, conventional CR (Computed Radiography) or film radiography requires several tens of seconds to several minutes from X-ray radiography to confirmation of the radiographic image. For this reason, if the result of the image confirmation is that the photographing was poor, it was necessary to come out of the photographing room and wear it, or recall the subject from the radiology department and re-photograph.

Therefore, in recent years, a so-called “Flat Panel Detector” (hereinafter referred to as “FPD”;) having a thin flat plate shape in which a large number of photoelectric conversion elements are arranged in a matrix is used as a radiation image acquisition device. The DR (Digital Radiography) used has been proposed. FPD detects X-rays that have been irradiated, photoelectrically converts them into electrical signals, and processes the electrical signals after photoelectric conversion to obtain X-ray images. It takes a few seconds after X-ray imaging. You can check the image.

[0004] As a radiological image acquisition device, a portable type (force set type) has been developed that incorporates an FPD in a force set and is portable. However, in the past, a force set with a built-in FPD and a console for image confirmation were connected by a cable, so it was necessary to route the force set so that the cable did not get tangled with the subject during X-ray photography. There was a problem that handling was troublesome.

[0005] To deal with such problems, the power setter is cableless and the force setter is easily routed. As described in Patent Documents 1 to 6, the power setter with the built-in FPD is connected to the wireless communication unit and the internal power supply. There has been proposed an apparatus that communicates with an external device via wireless (wireless communication).

[0006] In addition, conventionally, as shown in Patent Documents 7 and 8, it has been proposed to compress a medical diagnostic image, encrypt it, and transmit it to another device. Patent Document 1: JP 2004-180931 A

Patent Document 2: JP 2004-173907 (corresponding to US Patent Publication 2004-114725)

Patent Document 3: Japanese Patent Laid-Open No. 2002-191586

Patent Document 4: Japanese Laid-Open Patent Publication No. 2004-49887 (corresponding to US Patent Publication No. 2003-223540)

Patent Document 5: Japanese Unexamined Patent Publication No. 2004-97635

Patent Document 6: Japanese Unexamined Patent Application Publication No. 2004-101442

Patent Document 7: Japanese Patent Laid-Open No. 2003-126046 (corresponding to US Patent Publication No. 2003-035584)

Patent Document 8: Japanese Patent Application Laid-Open No. 2004-57592

Disclosure of the invention

Problems to be solved by the invention

[0007] By the way, as a method of wireless communication, there is a method of communicating high-capacity data at high speed using optical communication or radio waves, for example, IEEE802.lla, IEEE802.l, which are wireless LAN standards. Examples include a wireless LAN method conforming to lb, IEEE802.llg, and the like. And since radiation image acquisition systems are usually used in a radiography room surrounded by a lead plate, it was thought that radiographic image data would not leak even with such wireless communication. Also, if information that identifies individuals was not attached to radiographic image data communicated wirelessly, it was thought that there would be no problem even if it was leaked because it was completely unknown who the image was.

[0008] However, in practice, radiation imaging may be performed at a place other than the radiation imaging room surrounded by a lead plate, and even if information for identifying an individual is not attached to the radiation image data itself, It was found that there is a problem that radiographic image data of the target individual can be obtained if the timing of radiography of the target individual is specified by another method.

Here, Patent Documents 1 to 6 described above do not describe encryption of wireless communication. Patent Documents 7 and 8 described above describe that wireless communication between the radiation image acquisition apparatus and the console is encrypted. [0009] The present invention has been made to solve the above-described problems. Even if data transmitted by wireless communication leaks, it is substantially possible to obtain a radiation image from the leaked data. An object of the present invention is to provide a radiological image acquisition system, a cassette, a console, a radiographic image communication system, and a program that can be disabled.

Brief Description of Drawings

FIG. 1 is a diagram showing a schematic configuration of an X-ray image acquisition system according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a schematic configuration of a force set according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view of a force set centering on a panel according to an embodiment of the present invention.

FIG. 4 is a circuit diagram showing a configuration of a circuit centered on a photodetector according to an embodiment of the present invention.

FIG. 5 is a diagram showing a configuration of encryption processing means according to an embodiment of the present invention.

FIG. 6 is a diagram showing a configuration of a decoding processing unit according to an embodiment of the present invention.

FIG. 7 is a diagram showing a schematic configuration of a modified example of the X-ray image acquisition system of one embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

[0011] Terms will be described below.

Wireless communication includes radio communication, optical communication, and ultrasonic communication. Radiographic image data communication or optical communication is preferable for radiographic image data communication. The communication using radio waves includes a method of transmitting using radio waves having a frequency of more than 1 GHz and a method of communicating using radio waves having a frequency of 1 GHz or less. Information for the radiological image acquisition means of the present invention to obtain radiological image data For communication, it is preferable to use a radio wave with a frequency of 1 GHz or less.

[0012] And, a method of transmitting by radio waves with a frequency exceeding 1 GHz includes, for example, a method using a next-generation mobile phone using, for example, a 4 GHz band, a 2 GHz band, or a 2.1 GHz band, IEEE802.11a, IEEE802.l. Compatible with standards such as ib and IEEE802.l lg 2.4 GHz band and 5.2 GHz band, etc. V, wireless LAN method, FWA (Fixed Wireless Access, fixed using 18 GHz band and 19 GHz band, etc. Wireless access), 2.45GHz band Bluetooth or 2.4GHz band HomeRF (Home Radio Frequency) Methods based on wireless communication standards, such as the method used, UWB (Ultra Wide Band), that is, communication methods using ultra-wideband radio waves, industrial science and medicine using 2.4 GHz band and 5.8 GHz band, etc. For example, there is a method using an industrial frequency band (ISM: Industrial, Scientific and Medical band). And from the viewpoint of less radiating radio waves such as “Shadowing” and “Multi Pass Fading” and the small size of the communication circuit, it is less than 10GHz (especially 3 GHz or less) is preferable.

[0013] In addition, as a method of communicating using a radio wave with a frequency of 1 GHz or less, for example, a method using a specific low power radio using a 7 X 10 MHz band or a 4 X 10 ² MHz band, a method using PHS, 8 X 10 Examples include a method using a mobile phone using the ² MHz band or the 9 X 10 ² MHz band. The radio wave having a frequency of 1 GHz or less is preferably a radio wave having a frequency of 8 × 10 ² MHz or less (in particular, 4 × 10 ² MHz or less) from the viewpoint of wraparound of the radio wave. Further, from the viewpoint of miniaturization of the antenna, a radio wave having a frequency of 3 × 10 MHz or more (especially 1Χ10 ² ΜΗζ or more) is preferable.

[0014] The light used for communication by light is a force using near infrared rays, near infrared rays, visible light, ultraviolet rays, etc. Communication using near infrared rays (especially near infrared rays having a wavelength of 700 nm or more and 2000 nm or less) is preferable.

[0015] In addition, the wireless communication between the console and the force set using the wireless communication may be a form in which the console and the force set directly communicate with each other, or a wireless repeater is provided in the middle of the wireless communication. A mode of performing wireless communication via a repeater may be used. The wireless communication using these radio waves may be analog communication or digital communication.

Further, the power source of the force set may be an external power source that supplies external force power such as a power unit connected to the force set via a power line or an AC power source, but an internal power source provided in the force set is preferable because it can be easily handled. Further, the internal power source provided in the force set may be a power supply unit provided in contact with the force set, but is preferably an internal power source provided in the force set.

[0016] Radiation is an electromagnetic wave or particle beam that has a strong ionizing or fluorescent action. X-rays, y-rays, j8-rays, alpha rays, deuteron rays, proton rays, and other heavy charged particle rays and neutron rays Are listed. In the present invention, electron rays, X rays, and γ rays are preferred as radiation, and X rays are particularly preferred. [0017] A console is a device for an operator to communicate with a force set, and a separate display device or operation device may be connectable, or the display device or operation device is integrated. Moyo

[0018] Encryption is the conversion of data in accordance with established rules so that it cannot be stolen or altered by a third party during communication. Encryption methods include public key cryptography such as RSA, ElGamal cryptography, and elliptic curve cryptography, and private key cryptography such as RC4, DES, IDEA, FE AL, and MISTY. Good. It is also possible to use the encryption method used in communication standards such as WEP, which is adopted as the security system for IEEE 802. ib.

[0019] Further, the radiation image data obtained by the radiation image acquisition means may be directly encrypted, or may be subjected to encryption processing after other processing such as compression processing. Encrypting after obtaining the compressed data from the radiographic image data obtained by the radiographic image acquisition means reduces the redundancy of the radiographic image data, such as the presence of a missing part in radiography, and decrypts the data. This is preferable because the difficulty increases.

In addition, data obtained by the encryption process may be transmitted directly, or may be transmitted after other processing.

[0020] Compression is a process of reducing the capacity while maintaining the meaning of the data according to a certain procedure, such as lossless compression that can completely restore data such as Huffman code, and JPEG compression. There is irreversible compression that causes a certain amount of loss in data, but reversible compression is preferable.

Further, the radiation image data obtained by the radiation image acquisition means may be directly compressed or may be subjected to force compression processing by performing other processing such as correction processing. In addition, the compressed data may be directly encrypted, or may be encrypted after other processing.

The decryption key is to return the encrypted data to a readable state. In the decryption process, the data obtained by the console communication means may be directly decrypted according to the post-process of the encryption process, or decompressed after performing the process according to the process after the encryption process. You may do it. In addition, after decryption processing, after decryption processing, depending on preprocessing of encryption processing You may process.

[0022] Decompression is restoration of data whose capacity has been reduced while maintaining the meaning of the data by compression processing to the original state. In the decompression process, the data obtained by the decryption process may be directly decompressed according to the process before the encryption process after the compression process, or may be decompressed after performing other processes. Depending on the preprocessing of the compression process, the data obtained by the decompression process can be saved directly, or it can be saved after other processes.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Needless to say, the present invention is not limited to these embodiments.

The description in the embodiment column of the invention shows the form that the inventor recognizes as the best for carrying out the invention. At first glance, the terms used in the scope of the invention and the claims are determined. There are also expressions that may be defined, but these are only expressions that specify the form that the inventor recognizes as the best, and specify terms used in the scope of the invention and claims. Or not limited.

[0024] An embodiment of a radiation image acquisition system according to the present invention will be described with reference to Figs.

As shown in FIG. 1, an X-ray image acquisition system 1000 according to the present embodiment is a type of radiological image acquisition system that acquires radiographic image data, and X-rays using X-rays that are a type of radiation. Image data is obtained. The X-ray image acquisition system 1000 is a system that assumes X-ray imaging performed in a hospital. For example, the X-ray imaging room R1 that irradiates the subject with X-rays and the X-ray technician irradiates the subject with X-rays. It is placed in the X-ray control room R2 that controls the X-rays and performs image processing of X-ray images obtained by irradiating X-rays.

[0026] A console 1 is provided in the X-ray control room R2. The entire X-ray image acquisition system 1000 is controlled by the console 1, and X-ray image capturing control and image processing of the acquired X-ray image are performed.

The console 1 is connected to an operation input unit 2 through which an operator inputs a shooting preparation instruction, a shooting instruction, and the content of the instruction. As the operation input unit 2, for example, an X-ray irradiation request switch, touch panel panel, mouse, keyboard, joystick, or the like can be used, and the X-ray tube voltage, X-ray tube current, X X-ray imaging conditions such as X-ray exposure time, Instructions such as X-ray imaging control conditions such as shadow timing, imaging region, imaging method, image processing conditions, image output conditions, force setting selection information, order selection information, subject ID, etc. are input to console 1.

Further, a display unit 3 for displaying an X-ray image or the like is connected to the console 1, and the display 1 of the display unit 3 is controlled by the display control unit 11 constituting the console 1. As the display unit 3, for example, a liquid crystal monitor, a monitor such as a CRT (Cathode Ray Tube) monitor, an electronic bino electronic film, or the like can be used. Characters such as X-ray imaging conditions and image processing conditions and X-ray images are displayed on the display unit 3 under the control of the display control unit 11 of the console 1.

[0027] The console 1 includes a display control unit 11, an input unit 12, a console control unit 13, a console communication unit 14, an image processing unit 15, an image storage unit 16, a console power supply unit 17, and a network communication unit 18. Etc. Display control unit 11, input unit 12, console control unit 13, console communication unit 14, image processing unit 15, image storage unit 16, console power supply unit 17, and network communication unit 18 are each connected to a bus. Data exchange is possible.

The input unit 12 receives the instruction content from the operation input unit 2.

The console control unit 13 determines the imaging conditions based on the instruction content received by the input unit 12 from the operation input unit 2 and the order information received by the network communication unit 18 from the HISZRIS 71. Then, the console control unit 13 transmits an imaging signal useful for imaging such as imaging condition information regarding the imaging condition to the X-ray source 4 and the force set 5 by the console communication unit 14. Control X to take X-ray images.

Further, the console control unit 13 causes the image storage unit 16 to temporarily store the X-ray image data transmitted from the force set 5 and received by the console communication unit 14. The console control unit 13 also controls the X-ray image data force temporarily stored in the image storage unit 16 so that the image processing unit 15 creates thumbnail X-ray image data. The display control unit 11 controls the display unit 3 to display a thumbnail image based on the generated thumbnail X-ray image data. Then, the console control unit 13 performs image processing based on the instruction content received by the input unit 12 and the order information of the HISZRIS 71, and the image processing unit 15 performs X-ray image data. Control is performed so that the line image data is stored in the image storage unit 16. And Based on the X-ray image data obtained as a result of image processing by the image processing unit 15, the display control unit 11 is controlled so that the display unit 3 displays a thumbnail image as a result of processing. Further, the console control unit 13 causes the image processing unit 15 to perform re-image processing of the X-ray image data based on the instruction content received by the input unit 12 from the operation input unit 2 thereafter. The display control unit 11 is controlled so that the display unit 3 displays the result, and the network communication unit 18 is controlled so that the X-ray image data is transferred, stored, and displayed to an external device on the network. To do.

In addition, the console control unit 13 has a function of managing a channel transmitted by the force set (radiation image acquisition device) 5 and a channel transmitted by other devices using microwaves as a transmission control device. In other words, when the force set 5 transmits with the microwave of a predetermined channel, the console control unit 13 performs control so that other devices do not transmit with the microwave of the channel and interfere with each other. For example, the console control unit 13 performs radio communication that can obtain the antenna power of the radio repeater 6 when a new device is introduced or always through the radio repeater 6 connected to the console communication unit 14 by a communication cable. Channel information is acquired, and the channel used by other devices is confirmed and stored. If the channel of the other device and the channel used in the force set 5 are the same, the console control unit 13 changes the channel of the force set 5 if possible, and if possible. Control to change the channel of other devices. In addition, if it is impossible to change each channel, the console control unit 13 warns the display unit 3 not to use other devices when transmitting radiation X-ray image data. The display control unit 11 is controlled to display a notification.

[0031] The console control unit 13 includes a CPU (Central Processing Unit) and a RAM (Random

It is possible to apply a mother board equipped with memory such as Access Memory (ROM) or ROM (Read Only Memory).

The CPU reads the program stored in the ROM or hard disk, expands the program on the RAM, and controls each part of the console 1, the X-ray source 4, the force set 5, and the external device according to the expanded program. In addition, the CPU reads various processing programs including system programs stored in the ROM or hard disk and stores them in the RAM. And various processes described later are executed.

The RAM is a volatile memory that temporarily stores various programs, input or output data, etc. that can be read and executed by the CPU in various processes controlled by the CPU of the console control unit 13. Form a work area.

The ROM is a non-volatile memory, for example, and stores a system program executed by the CPU, various programs corresponding to the system program, and the like. These various programs are stored in the form of readable program code, and the CPU sequentially executes operations according to the program code.

A hard disk may be used instead of the ROM. In this case, the hard disk stores a system program executed by the CPU and various application programs. In addition, the hard disk receives and stores various application programs such as the program of the present invention from the console communication unit 14 via a transmission medium of another device power network line such as a server, part or all of the hard disk. It may be. Further, the CPU receives a storage device such as a hard disk of a server provided on the network, and receives various application programs such as the program of the present invention, expands it on the RAM, and performs various processes such as the processing of the present invention. You can do it!

The display control unit 11 controls the display unit 3 to display images, characters, and the like based on X-ray image data, character data, and the like based on the control of the console control unit 13. For the display control unit 11, a graphic board or the like can be used.

[0033] The console communication unit (console communication means) 14 is connected to the X-ray source 4 and the wireless repeater 6 via a communication cable, and the console communication unit 14 is powered via the wireless repeater 6. Can communicate with Sette 5. The console communication unit 14 can transmit various control signals based on the contents of instructions from the console control unit 13 and imaging signals such as various information to the X-ray source 4 and the force set 5, while It can receive signals for shooting operating signals and various information. In addition, the console communication unit 14 can transmit various control signals based on the contents of the instruction and imaging signals such as various information to the X-ray source 4, as well as signals and various signals for transmitting the operation state from the X-ray source 4. It can receive shooting signals such as information. The console communication unit 14 can receive X-ray image data transmitted from the force set 5.

The communication cable connecting the console communication unit 14 to the X-ray source 4 and the wireless repeater 6 is detachable. When the communication cable is connected, image transfer can be performed at high speed, so X-ray image acquisition, X-ray image processing, X-ray image confirmation, etc. can be performed in a shorter time.

The image processing unit 15 performs image processing on the X-ray image data received from the force set 5 by the console communication unit 14. The image processing unit 15 performs X-ray image data correction processing, enlargement compression processing, spatial filtering processing, recursive processing, gradation processing, scattered radiation correction processing, grid correction processing, frequency enhancement processing, dynamic Image processing such as range (DR) compression is performed.

[0035] The image storage unit (image storage unit) 16 has a storage device for storing X-ray image data. The console communication unit 14 temporarily stores X-ray image data received from the force set 5, Save the processed X-ray image data. As the image storage unit 16, it is possible to use a hard disk that is a large-capacity and high-speed storage device, a hard disk array such as a RAID (Redundant Array of Independent Disks), a silicon disk, or the like.

The console power supply unit 17 is supplied with power from an external power source (not shown) such as an AC power source, or an internal power source (not shown) such as a knotter and a battery, and constitutes the console 1. Power is supplied to each part.

The external power supply of the console power supply unit 17 is detachable. When the console power supply 17 is supplied with power from an external power supply, it is not necessary to charge, so it is possible to shoot for a long time.

[0037] The network communication unit 18 communicates various types of information between the console 1 and an external device via a LAN (Local Area Network). As an external device, for example, HIS / RI ¾ (Hospital Information System / Radiology Information system: In-hospital † Blue News Nam Z Radiology Information System) terminal 71, imager 72, image processing terminal 73, view ヮ 74, file server 75, etc. Can be connected. The network communication unit 18 is configured according to a predetermined protocol such as DICO M (Digital Imaging and Communications in Medicine). Line image data is output to an external device.

[0038] The HISZRIS terminal 71 acquires information on the subject, imaging region and imaging method from the HIS / RIS, and provides the information to the console 1. The imager 72 records an X-ray image on an image recording medium such as a film based on the X-ray image data output from the console 1. The image processing terminal 73 performs processing for image processing of the X-ray image data output from the console 1 and CAD (Computer Aided Diagnosis), and stores it in the file server 75. View IV 74 displays an X-ray image based on the X-ray image data output from console 1. The file server 75 is a file server that stores X-ray image data that has undergone processed image processing.

In this embodiment, the display control unit 11 and the console control unit 13 are provided separately, but the display control unit and the console control unit may be separate bodies. For example, a mother board having a CPU and a memory mounted as a console control unit is used, and a graphic subsystem incorporated in the mother board is used as a display control unit. The console control unit 13 may also serve as a display control unit. In this embodiment, the image processing unit 15 may be a force console control unit 13 that is a separate body from the console control unit 13 and also serves as the image processing unit.

[0040] In this embodiment, the console control unit 13 has the function of a transmission control device, and both are integrated. However, the present invention is not limited to this, and the console control unit 13 and the transmission control device are separated. It may consist of a body. In this case, the transmission control device may be provided in the console 1 or may be provided independently as a device different from the console 1.

[0041] In the X-ray room R1, a radio repeater 6 for relaying communication between the console 1 and the force set 5 is installed.

The wireless repeater 6 performs wireless communication with the force set 5 by the wireless method described later. It communicates with console 1 via a communication cable. Then, the control signal transmitted from the console 1 is received by the force set 5 via the wireless repeater 6, and various signals are transmitted from the force set 5 to the console 1.

[0043] In the present embodiment, the wireless repeater 6 connects an internal power source 51 of a force set 5 described later. It has the function of a charger for charging. The wireless repeater 6 is provided with a connector. When this connector and the force set 5 are connected, the internal power supply 51 of the force set 5 is charged. The wireless repeater 6 is preferably formed so that the force set 5 can be easily attached and detached. Further, the wireless repeater 6 may have a function as a holder when the force set 5 is not used, in addition to the function as a charger of the force set 5.

[0044] The X-ray room R1 also includes an X-ray source 4 that irradiates the subject with X-rays, and a radiation image acquisition device that detects the X-rays irradiated to the subject and acquires X-ray image data. Force set 5 is placed. The X-ray room R1 is a room covered with an X-ray shielding member so that X-rays from the X-ray source 4 do not leak out of the X-ray room R1. Usually, such an X-ray shielding member is a metal member such as a lead plate, that is, a conductive member, and has a property of suppressing transmission of radio waves and a property of reflecting radio waves.

In this embodiment, the force set 5 is portable and can be taken out of the X-ray room R1.

[0045] Further, a wireless repeater 6 is installed in the X-ray imaging room R1. The wireless repeater 6 performs wireless communication with the cassette 5. The wireless repeater 6 communicates with the console 1 via a communication cable. For this reason, communication between the force set 5 and the wireless repeater 6 does not require a communication cable, and during X-ray photography, pay attention that the cable is entangled with the subject! ! However, if you handle force set 5, you can avoid the situation.

The wireless repeater 6 communicates with the console 1 via a communication cable. Then, the image data acquired by the force set 5 is transmitted to the console 1 via the wireless repeater 6, and a control signal and a shooting signal such as various information are communicated between the console 1 and the force set 5. The As a result, the console 1 and the radio repeater 6 are connected by a cable, and the radio repeater 6 is disposed in the X-ray radiographing room R1, so that X-ray imaging separated from the console 1 by a radiation shielding member. Even if force set 5 is used in room R1, good wireless communication is possible.

[0046] Further, it is preferable that the wireless repeater 6 has a function of a charger of the force set 5 and a function of a holder when the force set 5 is not used. For example, the wireless repeater 6 is provided with a connector, and when this connector and the force set 5 are connected, the internal power supply 51 of the force set 5 is charged. At this time, the wireless repeater 6 is preferably formed so that the force set 5 can be easily attached and detached. In addition, it is preferable that the wireless repeater 6 has a shape that holds the force set 5 while charging it, so that the force set 5 can function as a charger while functioning as a holder when not in use. I like it.

First, the X-ray source 4 is provided with a high-voltage generating source 41 that generates a high-voltage and an X-ray tube 42 that generates X-rays when a high-voltage is applied by the high-voltage generating source 41. . An X-ray diaphragm device (not shown) for adjusting the X-ray irradiation range is provided at the X-ray irradiation port of the X-ray tube 42. Since the X-ray diaphragm device controls the X-ray irradiation direction according to the control signal from the console 1, the X-ray irradiation range is adjusted according to the imaging region. Further, the X-ray source 4 is provided with an X-ray source control unit 43, and the high-pressure generation source 41 and the X-ray tube 42 are connected to the X-ray source control unit 43, respectively. The X-ray source control unit 43 drives and controls each unit of the X-ray source 4 based on the control signal transmitted from the console communication unit 14. That is, the X-ray source control unit 43 controls the high pressure generation source 41 and the X-ray tube 42.

[0048] Next, in the present embodiment, the force set 5 as the radiation image acquisition apparatus includes a housing 55 as shown in FIG. It is. The casing 55 is made of a light metal such as aluminum or magnesium. By using a lightweight metal for the housing 55, the strength of the housing 55 can be maintained.

Before the X-ray imaging, the operator adjusts the force setting 5 and the position and orientation of the subject so that X-rays transmitted at the desired position 'direction of the subject are photographed (in some cases, the X-ray source 6 ) O After that, X-ray source 4 generates X-rays in response to an instruction from console 1. Then, the X-ray that has passed through the subject at the desired position 'is incident on the force set 5 from the X-ray source 4.

The force set 5 is provided with an internal power supply 51, a force set communication unit 52, a force set control unit 53, and a nonel 54. The internal power supply 51, the force set communication unit 52, the force set control unit 53, and the panel 54 are each connected to a bus in the force set 5. [0050] The internal power supply 51 is provided in each part such as a panel 54 as a radiation image acquisition unit disposed in the force set 5, a force set communication unit 52 as a communication unit, and a force set control unit 53 as a control unit. , Supplying power to drive them. The internal power supply 51 is provided with a capacitor that can be charged and can handle the power consumed during shooting. As the capacitor, an electrolytic double layer capacitor can be applied. As the internal power source 51, a primary battery such as a manganese battery, a nickel-cadmium battery, a mercury battery, or a lead battery that requires battery replacement, or a rechargeable secondary battery can be applied.

[0051] From the viewpoint of imaging efficiency, the capacity of the internal power supply 51 is preferably 4 or more (especially 7 or more) when converted to the maximum number of X-ray images that can be taken continuously. ,.

The capacity of the internal power supply 51 is 100 or less (especially 50 or less) when converted from the maximum number of X-ray images that can be taken continuously from the viewpoint of miniaturization and weight reduction and low cost. It is preferable that

[0052] It is preferable that the force set has a plurality of power supply states with different power supply states, and changes the power supply state of the force set with appropriate timing. As such a power supply state, for example, it is preferable to have a shootable state and a state of lower power consumption than the shootable state. It is preferable to have a state under control of a plurality of shooting standby modes and a state under sleep mode control with lower power consumption.

[0053] Note that the imaging operation is an operation necessary for obtaining radiographic image data by radiography. For example, in the case of the panel shown in the embodiment, the electric power generated by panel initialization and radiation irradiation is used. These operations are energy storage, electrical signal reading, and radiation image data conversion.

The radiographable state is a state in which radiation image data can be obtained immediately by this radiographing operation.

[0054] The force set communication unit 52 demodulates the reception signal input to the antenna 521 and the antenna 521 that transmits / receives various signals to / from the console communication unit 14, or modulates and amplifies various signals to output to the antenna 521. The force set communication unit 52 transmits various signals to the console communication unit 14 via the wireless repeater 6 through wireless communication. It functions as a communication means capable of transmitting and receiving.

As shown in FIG. 2, the antenna 521 is provided outside the housing 55. Specifically, it is disposed close to the outside of the housing 55 and the side surface of the force set 5. It may be provided close to the back surface on the side opposite to the side irradiated with X-rays on the side of the force set 5. The shape and arrangement of the antenna are not limited to those illustrated.

In addition, a wireless circuit 522 to which an antenna 521 is connected is provided inside the housing 55, and the antenna 521 transmits and receives radio waves when the wireless circuit 522 is driven. In the present embodiment, the radio wave applied to the antenna 521 and the radio circuit 522 is a radio wave having a frequency exceeding 1 GHz of a predetermined channel set in advance. In addition, in order to reliably transmit and receive signals that are not limited to radio waves with frequencies exceeding 1 GHz, it is possible to use radio waves with frequencies of 1 GHz or less with low straightness and directivity, and optical communications. You can use it!

[0056] As a signal transmitted to the force set communication unit 52, for example, the console communication unit 14 force also indicates whether to apply a voltage from the internal power supply 51 to each drive unit such as various circuits inside the force set 5. There is an instruction signal. When there are a plurality of states such as a state in which the force set 5 can be photographed and a state in which it is ready for photographing, the operation state of the force set 5 can be switched by this instruction signal. In addition, a signal notifying that X-rays are emitted, an instruction signal (timing signal) for instructing the reading timing of the X-ray image data to the panel 54, a signal for instructing to transfer the X-ray image data, and the X-ray image data are normal. Signal and other signals that indicate that it has been received.

On the other hand, the signal transmitted from the force set communication unit 52 to the console communication unit 14 includes, for example, a signal notifying the operation state of the force set 5, a signal notifying that the X-ray image data is ready to be transmitted, and the like. Signals for shooting are listed.

Further, the force set communication unit 52 can transmit X-ray image data to the console communication unit 14 via the wireless repeater 6. That is, when a predetermined signal is transmitted from the console 1, the force set communication unit 52 acquires the console communication unit 14 from the panel by wireless communication via the antenna 521 and the wireless repeater 6 communication cable. Large-capacity X-ray image data can be transmitted quickly and reliably.

[0058] Further, the force set control unit 53 serves as a control means for receiving the control signal received by the force set communication unit 52. Based on the imaging signal such as No. 1, the control unit controls the panel 54, the force set communication unit 52, and the like disposed in the force set 5.

The panel 54 functions as a radiation image acquisition unit that outputs (detects) X-ray image data based on X-rays transmitted through the subject. The panel 54 of the present embodiment is an indirect flat panel detector (FPD).

FIG. 2 is a perspective view showing a schematic configuration of the force cassette 5, and FIG. 3 is a cross-sectional view of the cassette 5 centering on the panel 54.

In this embodiment, the example shown in FIGS. 2 and 3 will be described, but the present invention is not limited to this.

It is also possible to use a scintillator having a different thickness or type or a panel having a different area of the imaging region. The thicker the scintillator, the higher the sensitivity, and the thinner the scintillator, the higher the spatial resolution. Spectral sensitivity varies depending on the type of scintillator.

The panel 54 is provided with a scintillator 541 that detects X-rays transmitted through the subject and converts the detected X-rays into fluorescence in the visible region (hereinafter referred to as “visible light”) in layers.

The scintillator 541 includes a phosphor as a main component. The scintillator 541 is a layer that emits visible light by the recombination energy when the host substance of the phosphor is excited (absorbed) by the irradiated X-rays. As this phosphor, for example, CaWO, CdWO

Examples include those that emit fluorescence by a base material such as 4 and those that emit fluorescence by an emission center substance added to the base material such as CsI: Tl or ZnS: Ag.

[0062] It is preferable that a protective layer (not shown) is provided on the upper layer of the scintillator 541!

The protective layer protects the scintillator and completely covers the top and edges of the scintillator. As the protective layer, any material may be used as long as it has the effect of protecting the scintillator from moisture. In the case where a phosphor having hygroscopicity (in particular, a columnar crystal phosphor made of alkali halide and further alkali halide) is used as the scintillator, for example, a podium formed by the CVD method disclosed in USP 6469305 is used. Use an organic film made of riparaxylylene, an organic film formed of a polymer containing a silazane or a siloxazan type polymer compound such as polysilazane or polysiloxazan, or an organic film formed by a plasma polymerization method. I prefer it. [0063] Under the scintillator 541, a radiation detector 542 (X-ray detector) and a radiation detector formed of amorphous silicon are stacked and extended. Visible light emitted from the scintillator 541 is converted into electrical energy and output. The panel 54 is preferably composed of pixels of 1000 X 1000 pixels or more (especially 2000 X 2000 pixels or more) from the viewpoint of diagnostic performance of X-ray images! The panel 54 is preferably composed of pixels of 10,000 x 10,000 pixels or less (especially 6000 x 6000 pixels or less) from the viewpoint of human visibility and X-ray image processing speed! ! / ヽ. It is also preferred to ensure the immediateness of communication by high-speed encryption processing.

In addition, the size of the imaging area of the panel 54 is preferably 10 cm X 10 cm or more (especially, 20 cm X 20 cm or more) from the viewpoint of diagnostic properties by X-ray images!

In addition, from the viewpoint of ease of handling as a force set, the size of the shooting area of panel 54 is preferably 70cm x 70cm or less (especially 50cm x 50cm or less)! / ヽ.

In addition, the size of one pixel of panel 54 is preferably 40 m X 40 m or more (especially 70 m X 70 m or more) from the viewpoint of reducing X-ray exposure!

In addition, the size of one pixel of the panel 54 is preferably 200 m x 200 m or less (especially 160 m x 160 m or less) from the viewpoint of the diagnostic property of X-ray images!

In the present embodiment, the panel 54 is composed of 4096 × 3072 pixel covers, the imaging area has an area force of S430 mm × 320 mm, and the size of one pixel is 105 m × 105 μm.

[0064] Here, a circuit configuration centered on the photodetector 542 will be described with reference to FIG.

As shown in FIG. 4, the photodetector 542 has a two-dimensionally arranged collection electrode 5421 for reading out the electric energy stored in accordance with the intensity of the irradiated X-rays. The collecting electrode 5421 is one electrode of a capacitor 5424 so that electric energy can be stored in the capacitor 5424. Here, one collecting electrode 5421 corresponds to one pixel of X-ray image data.

A scanning line 5422 and a signal line 5423 are disposed between the collecting electrodes 5421 adjacent to each other. The scanning line 5422 and the signal line 5423 are orthogonal to each other. [0066] A switching thin film transistor 5425 (TFT: Thin Film Transistor, hereinafter referred to as a transistor) for controlling storage and reading of electric energy is connected to the capacitor 5424. The transistor 5425 has a drain electrode or a source electrode connected to the collection electrode 5421 and a gate electrode connected to the scanning line 5422. When the drain electrode is connected to the scanning line 5422, the source electrode is connected to the signal line 5423, and when the source electrode is connected to the collection electrode 5421, the drain electrode is connected to the signal line 5423. In the panel 21, for example, an initialization transistor 5427 to which a drain electrode is connected is provided on the signal line 5423. The source electrode of this transistor 5427 is grounded! The gate electrode is connected to the reset line 5426.

Note that the transistor 5425 and the transistor 5427 are preferably formed using a silicon stacked structure or an organic semiconductor.

In addition, a reset line 5426 to which a reset signal RT is transmitted from the scan drive circuit 543 is connected to the scan drive circuit 543 at right angles to the signal line 5423.

The reset line 5426 is connected to the gate electrode of the initialization transistor 5427 that is turned on by the reset signal RT. In the initialization transistor 5427, the gate electrode is connected to the reset line 5426, the drain electrode is connected to the signal line 5423, and the source electrode is grounded. When the source electrode is connected to the signal line 5423, the drain electrode is grounded.

The scan drive circuit 543 supplies the reset signal RT to the initialization transistor 5427 via the reset line 5426 to turn on the initialization transistor 5427, and the scan drive circuit 543 turns on the transistor 5425 via the scan line 5422. When the transistor 5425 is turned on by supplying the read signal RS to the transistor 5425, the electric energy force stored in the capacitor 5424 is discharged to the outside of the photodetector 542 through the S transistor 5425. That is, the electric energy released from the photodetector 542 is released to the ground electrode through the signal line 5423 and the initialization transistor 5427. Hereinafter, the release of the electrical energy stored in the capacitor 5424 to the outside of the photodetector 542 when the reset signal RT is supplied is referred to as reset (initialization) of the photodetector 542.

In addition, the scanning line 5422 includes a scanning drive circuit that supplies a readout signal RS to the scanning line 5422. Road 543 is connected. The transistor 5425 connected to the scan line 5422 to which the read signal RS is supplied is turned on, and the electric energy accumulated in the capacitor 5424 connected to the transistor 5425 is read and supplied to the signal line 5423. In other words, the scan driving circuit 543 can generate a signal for each pixel of the X-ray image data by driving the transistor 5425.

A signal reading circuit 544 is connected to the signal line 5423. Electric energy stored in the capacitor 5424 and read out to the force signal line 5423 is supplied to the signal reading circuit 544. The signal reading circuit 544 includes a signal converter 5441 that supplies a voltage signal SV proportional to the amount of electric energy supplied to the signal reading circuit 544 to the AZD converter 5442, and a voltage signal SV from the signal converter ^ 5441. An AZD conversion 5442 is provided that converts the signal into a digital signal and supplies it to the data conversion unit 545.

A data conversion unit 545 is connected to the signal reading circuit 544. The data converter 545 generates X-ray image data based on the digital signal supplied from the signal reading circuit 544. In the present embodiment, a signal conversion circuit (data conversion circuit) is constituted by the signal reading circuit 544 and the data conversion unit 545.

[0070] When high-resolution X-ray image data is not necessary or when X-ray image data is acquired quickly, the console control unit 13 receives the X-ray image data according to the imaging method selected by the operator. Control signals such as decimation, pixel averaging, and region extraction are transmitted to the force set control unit 53. The cassette control unit 53 performs control so as to execute the following decimation, pixel averaging, and region extraction in accordance with the received control signals such as decimation, pixel averaging, and region extraction.

Thinning is performed by reading out only odd-numbered columns or even-numbered columns and thinning out the number of pixels to be read out to 1Z4 of the total number of pixels, or by thinning out to 1Z9, 1Z16, etc. in the same way. Note that the thinning method is not limited to this method.

The pixel average can be calculated by simultaneously driving a plurality of scanning lines 5422 and performing analog addition of two pixels in the same column direction. The pixel average is not limited to being calculated by adding two pixels, but can be easily obtained by performing analog addition of a plurality of pixels in the column signal wiring direction. Furthermore, for the addition in the row direction, 2 × 2 in combination with the above-mentioned analog addition by digitally adding adjacent pixels after AZD conversion output The sum of square pixels such as can be obtained. As a result, it is possible to read data at high speed without making the irradiated X-rays useless.

In addition, the area extraction has a means for limiting the X-ray image data capturing area. This is because the X-ray image data acquisition area that requires force, such as instructions for the imaging method, is specified, and the force setting control unit 53 determines the data acquisition range of the scanning drive circuit 543 based on the acquired acquisition area. The panel 54 drives the changed capture range.

A memory 546 is connected to the data conversion unit 545. The memory 546 stores the X-ray image data generated by the data conversion unit 545. Further, the memory 546 stores gain correction data in advance.

The memory 546 includes a RAM (Random Access Memory) and a nonvolatile memory. The memory 546 can collectively write the X-ray image data sequentially generated by the data conversion unit 545 to the nonvolatile memory after sequentially writing to the RAM. The non-volatile memory is composed of two or more memory parts such as EEPROM and flash memory, and while one of the memory parts is being erased, data can be written to the other. As described above, the force set 5 is provided with the memory 546 for temporarily storing the X-ray image data in order to temporarily store the X-ray image data. It can be stored in the memory 546, and compression processing and encryption processing can be performed with enough margin. Even if communication is poor or communication is not possible, there is no need to delay X-ray imaging until the communication is improved. The stored X-ray image data can be transmitted from force set 5 to console 1 at a communication speed corresponding to the communication state between force set 5 and console 1. Note that the capacity of the memory 546 is preferably 4 or more (particularly 10 or more) in terms of the number of images that can store images of the maximum data size from the viewpoint of shooting efficiency. Further, the capacity of the memory 546 is preferably 100000 or less (particularly 100 or less) in terms of the number of images that can be stored with the maximum data size from the viewpoint of low cost.

A support 547 on a flat plate formed of a glass substrate is provided below the photodetector 542, and the stacked structure of the scintillator 541 and the photodetector 542 is supported by the support 547.

Note that the scintillator 541 is completely covered with a protective layer at the top and edges, and a support 547 at the bottom. A covered configuration is preferred. In this case, water vapor in the atmosphere is blocked by the protective layer and the support 547, and deterioration of the scintillator 541 by moisture can be suppressed.

An X-ray dose sensor 548 is provided on the lower surface of the support 547 (that is, the surface opposite to the X-ray irradiation direction of the support 547). The X-ray dose sensor 548 detects the X-ray dose transmitted through the light detector 542, and transmits a predetermined X-ray dose signal to the force set control unit 53 when the X-ray dose reaches a predetermined amount. In this embodiment, an amorphous silicon light-receiving element is used as the X-ray dose sensor 548. However, the X-ray dose sensor is not limited to this, and an X-ray sensor that directly detects X-rays using a light-receiving element made of crystalline silicon or a sensor that detects fluorescence using a scintillator may be used.

An X-ray shielding member 549 is provided on the lower surface of the support 547 and the X-ray dose sensor 548 (that is, the surface opposite to the X-ray irradiation direction of the support 547 and the X-ray dose sensor). The X-ray shielding member 549 is made of a material that absorbs radiation such as lead and has conductivity. The material for forming the X-ray shielding member 549 is not limited to those exemplified here. The irradiated X-rays are absorbed by the X-ray shielding member 549 and do not pass through the X-ray shielding member 549. On the lower surface of the X-ray shielding member 549, an internal power source 51, a force set control unit (control means) 53, and a data conversion circuit (signal reading circuit 544 and data conversion unit 545) are provided. In the internal power supply 51, the force set control unit (control means) 53, and the data conversion circuit, X-rays are absorbed by the X-ray shielding member 549, so the internal power supply 51, the force set control unit (control means) 53 and the data conversion X-rays are not scattered by the circuit and reflected on the panel 54. Thereby, the panel 54 can acquire high-quality X-ray image data. As described above, the force set 5 is driven by the power from the internal power supply unit 51 and is portable, and the force set communication unit 52 and the console communication unit 14 communicate via wireless communication. While maintaining linkage with the console 1, it is possible to improve shooting efficiency with good operability.

In the present embodiment, the power shown in the example in which the panel 54 is configured by one panel having 4096 × 3072 pixels is not limited to this, and for example, four panels having nonel 54 force S2048 × 1536 pixels are provided. What consists of a small panel can also be used. When a panel is composed of multiple small panels in this way, the four small panels are combined into a single panel. However, since the yield of each panel is improved, there is an advantage that the yield is improved as a whole and the cost is reduced.

Further, in the present embodiment, the force shown in the example of reading the electric energy of the X-rays irradiated using the scintillator 541 and the photodetector 542 is not limited to this, and the X-rays can be directly converted into electric energy. It is possible to apply a photodetector. For example, an X-ray detector composed of an X-ray electrical energy converter using amorphous Se or PbI2 and an amorphous silicon TFT may be used.

In the present embodiment, an example in which one AZD modification 5442 is provided in the signal reading circuit 544 is shown, but the present invention is not limited to this, and a plurality of AZD modifications can be applied. The number of AZD converters is preferably 4 or more, particularly 8 or more in order to shorten the image reading time and obtain a desired SZN ratio.

Further, the number of AZD converters is preferably 64 or less, particularly 32 or less, in order to reduce cost and reduce size. As a result, the analog signal band and the AZD conversion rate are not increased unnecessarily.

Further, in the present embodiment, the force shown in the example of the support 547 formed of glass is not limited to this, and a support formed of a resin or the like can be applied. In the above description, the power console 1 that states that the console 1 is installed in the X-ray control room R2 may be a portable terminal capable of wireless communication. In this case, a radio repeater is also installed in the X-ray control room R2, and the console communication unit 14 can communicate wirelessly with the radio repeater 6 in the X-ray radiographing room R1 and with the radio repeater in the X-ray control room R2. As a result, it is preferable that communication with the force set 5 is possible in both the X-ray imaging room R1 and the X-ray control room R2. As a result, the photographer can confirm the X-ray image on the console 1 while giving instructions to the subject in the X-ray room R1 in the X-ray room R1 as in the past. X-ray image data processing can be started, the X-ray image can be checked with the travel time between the X-ray room R1 and the X-ray control room R2, Image processing of image data can be started, and the total imaging efficiency of the entire X-ray imaging can be improved by repeating the cycle of checking the X-ray image from the X-ray imaging. Also, in this case, the transmission data may be transmitted as compressed and encrypted data to prevent leakage of X-ray image data. Preferred for simplicity of processing! /.

Next, the operation of the X-ray image acquisition system according to one embodiment of the present invention will be described.

[0076] First, the console controller 13 can also obtain the antenna force of the radio repeater 6 when a new device is introduced or always through the radio repeater 6 connected to the console communication unit 14 via a communication cable. Channel information for wireless communication is acquired, and the channel used by other devices is confirmed and stored. When a new device is introduced, the console control unit 13 controls the display unit 11 to display on the display unit 3 the fact that it has been installed and the channel information being used.

Then, the console control unit 13 determines whether or not the channel of the other device has the same force as the channel already used in the force set 5. Here, if the channel used by force set 5 is different from the channel of another device, console control unit 13 controls display control unit 11 so that display unit 3 displays that effect, and stands by as it is. To do. On the other hand, when the channel of the other device and the channel used in the force set 5 are the same, the console control unit 13 performs the following control.

First, the console control unit 13 searches for a free channel from the stored channel usage status. Next, the console control unit 13 determines whether or not the force set 5 is a device capable of changing the channel. If the force set 5 can change the channel, the console control unit 13 changes the channel of the force set 5 to one of the searched empty channels, and displays that the channel has been changed and the changed channel display. The display control unit 11 is controlled in the same way as in unit 3.

In addition, if the force set 5 is a device incapable of changing the channel, the console control unit 13 displays that fact on the display unit 3 and is a device in which another newly introduced device can change the channel. Judge whether or not. If the channel of another device can be changed, the console control unit 13 changes the channel of the other device to one of the searched empty channels, and displays that the channel has been changed and the channel after the change. The display control unit 11 is controlled as in part 3.

If the other device is a device whose channel cannot be changed, the console control unit 13 Control the display control unit 11 so that the display unit 3 displays that effect, and then display a warning message on the display unit 3 so as not to use other devices when transmitting X-ray image data. The display control unit 11 is controlled to perform.

[0079] Then, until the imaging preparation instruction signal is received from the console control unit 13, the force setting control unit 53 performs control so as to keep the scanning drive circuit 543 in the OFF state. In order to keep the force set control unit 53 in the OFF state, the scanning drive circuit 543 is not connected to the collection electrode 5421 so that the scanning line 5422, the signal line 5423, and the reset line 5426 are set to the same potential and no bias is applied to the collecting electrode 5421. Control unit 53 controls. Further, the force setting control unit 53 may keep the power supply of the signal reading circuit 544 in the OFF state and set the potentials of the scanning line 5422, the signal line 5423, and the reset line 5426 to the GND potential.

[0080] The state in which no bias is applied to the scanning drive circuit 543 and the signal reading circuit 544 includes a photographing standby mode and a sleep mode.

Note that in the imaging standby mode, the scan drive circuit 543 and the signal reading circuit 544 not only apply a bias potential to the photodiode but also rise quickly so that power is not supplied to the scan drive circuit 543 and the signal reading circuit 544 as well. This is preferable because it can further reduce power consumption. Further, since no signal is generated in the shooting standby mode, it is preferable not to supply power to the data conversion unit 545 because it can further reduce power consumption. It is also preferable to provide a sleep mode that consumes less power than the shooting standby mode. Then, it is preferable to shift to the sleep mode after the captured image is completely transmitted to the console 1. In the sleep mode, it is possible to stop the power supply to the power set communication unit 52 or the entire transmission function and power supply to the memory, leaving only the functions necessary for starting up to the shooting standby mode by an instruction from the console 1. Like U ヽ. That is, in the sleep mode, no bias potential is applied to the photodiode, and the high-speed transmission function or the entire transmission function of the scanning drive circuit 543, the signal reading circuit 544, the data conversion unit 545, the memory 546, and the force set communication unit 52 It is preferable not to supply power. As a result, wasteful power consumption can be further suppressed.

As described above, in the shooting standby mode and the sleep mode control state in which the power consumption per unit time is lower than the shooting enabled state, the scanning line 5422, the signal line 5423, and the reset line 5426 Since the potential is the same and no bias is applied to the collecting electrode 5421, that is, the voltage is not substantially applied to a plurality of pixels, the deterioration is caused by the voltage being substantially applied to the PD or TFT. That is, deterioration of a plurality of pixels can be suppressed. In addition, wasteful power consumption can be reduced.

[0081] Then, for example, the input unit 12 in which the 1st switch of the X-ray irradiation switch is turned on or predetermined items such as subject information and imaging information are input via the operation input unit 2 Console control unit 13 determines the shooting conditions based on the instruction contents of the operator and powerful order information such as HISZRIS71. Based on these shooting conditions! The obtained radiography preparation instruction signal is transmitted to the X-ray source control unit 43 and the force setting control unit 53 via the console communication unit 14 to shift to a radiographable state.

When the X-ray source control unit 43 receives the imaging preparation instruction signal, the X-ray source control unit 43 drives and controls the high-voltage generation source 41 to shift to a state in which a high voltage is applied to the X-ray tube 42.

When the force setting control unit 53 receives the shooting preparation instruction signal, the force setting control unit 53 shifts to a shooting ready state. That is, all pixels are reset at predetermined intervals until a shooting instruction is input in a shooting enabled state, thereby preventing electrical energy from being accumulated in the capacitor 5424 due to dark current. Since it is unknown how long the shooting can be continued, the predetermined interval is set longer than that during shooting, and the ON time of the transistor 5425 is set shorter than that during shooting. As a result, in a state in which photographing can be performed, the reading operation with a load on the transistor 5425 is reduced. Then, after shifting to the photographing enabled state, the force setting control unit 53 transmits a photographing enabled state transition signal to the console 1. When the console control unit 13 receives the imaging ready state transition signal, the console control unit 13 controls the display control unit 11 so that the display unit 3 displays the force setting imaging ready state display indicating that the force setting has shifted to the imaging ready state. .

[0084] When the shooting instruction is input to the console control unit 13, the console control unit 13 determines the shooting condition based on the instruction content of the operator or the order information from the HISZRIS71, and the shooting condition information regarding this shooting condition. Is transmitted to the X-ray source control unit 43 and the force set control unit 53 via the console communication unit 14. For example, a signal transmitted from the console communication unit 14 to the force set control unit 53 is transmitted via the wireless repeater 6 to the force set communication unit 5 of the force set 5. The signal is received by the second antenna 521, and the received signal is demodulated by the radio circuit 522 and sent to the force set control unit 53.

When the console control unit 13 receives an X-ray irradiation instruction from the operator such as turning on the 2nd switch of the X-ray irradiation switch, for example, the console control unit 13 transmits an imaging instruction signal to the force setting control unit 53 of the force set 5. Then, after an X-ray irradiation instruction is input to the console control unit 13, the console control unit 13 controls the X-ray source 4 and the force set 5 and performs imaging while synchronizing them.

When receiving the imaging instruction signal, the force setting control unit 53 initializes the panel 54 and shifts to a state in which the panel 54 can store electrical energy. Specifically, refreshing is performed, and all pixels dedicated for the imaging sequence are reset a predetermined number of times and all pixels dedicated to the electric energy storage state are reset to transit to the electric energy storage state. Required power for exposure The short period of time required for completion of preparation for imaging is required for practical use. For this purpose, all pixels dedicated to the imaging sequence are reset. In addition, when an exposure request is generated even for a state force that can be taken in an imaging-ready state, operability can be reduced by shortening the period until the preparation for imaging is completed by entering the immediate imaging sequence drive. To improve.

[0086] When the panel 54 shifts to a state in which electrical energy can be stored, the force set control unit 53 sends a preparation completion signal for the force set 5 from the force set communication unit 52 to the console communication unit 14 via the wireless repeater 6. Send. When receiving the preparation end signal, the console communication unit 14 transmits a force set preparation end signal to the console control unit 13.

The console control unit 13 transmits an X-ray irradiation signal to the X-ray source 4 when receiving the force set preparation completion signal and receiving the X-ray irradiation instruction. When receiving the X-ray irradiation signal, the X-ray source control unit 43 drives and controls the high-pressure generation source 41 to apply a high pressure to the X-ray tube 42 and generate X-rays from the X-ray source 4. X-rays generated from the X-ray source 4 are irradiated to the subject after the X-ray irradiation range is adjusted by an X-ray aperture device provided at the X-ray irradiation port. In addition, the console control unit 13 controls the display control unit 11 so that the display unit 3 displays a display during X-ray imaging indicating that X-ray imaging is being performed.

The X-ray that has passed through the subject is incident on the force set 5. X-rays incident on the force set 5 are converted into visible light by the scintillator 541. [0088] The X-ray dose sensor 548 detects the X-ray dose irradiated to the force set 5. When the detected X-ray irradiation amount reaches a predetermined amount, the X-ray dose sensor 548 transmits a predetermined X-ray dose signal to the force set control unit 53. When the force set control unit 53 receives the predetermined X-ray dose signal, the force set control unit 53 transmits an X-ray end signal to the console communication unit 14 via the wireless repeater 6. When receiving the X-ray end signal, the console communication unit 14 transmits the X-ray end signal to the console control unit 13 and transmits the X-ray irradiation stop signal to the X-ray source control unit 43. When the X-ray source control unit 43 receives this X-ray irradiation stop signal, the X-ray source control unit 43 drives and controls the high-pressure generation source 41, and the high-pressure generation source 41 stops applying high pressure to the X-ray tube 42. This stops X-ray generation.

[0089] When the force set communication unit 52 transmits an X-ray end signal via the wireless repeater 6, the force set control unit 53 drives the scanning drive circuit 543 and the signal reading circuit 544 based on the X-ray end signal. Dynamic control. The scanning drive circuit 543 reads the electrical energy acquired by the photodetector 542 and inputs the acquired electrical energy to the signal reading circuit 544. For example, the electrical energy acquired by the photodetector 542 may be read after a predetermined time from the start or end of transmission of the X-ray end signal, or the electrical energy acquired by the photodetector 542 at the same time as the end of transmission. The engineering energy may be read out. The signal reading circuit 544 converts the input electrical energy into a digital signal. Then, the data conversion unit 545 configures the digital signal into X-ray image data. The memory 546 temporarily stores the X-ray image data configured by the data conversion unit 545.

Subsequently, the force setting control unit 53 acquires X-ray image data, and then acquires correction X-ray image data. The correction X-ray image data is dark X-ray image data that is not irradiated with X-rays, and is used to correct the X-ray image in order to obtain a high-quality X-ray image. The method for acquiring X-ray image data for correction is the same as the method for acquiring X-ray image data except that X-rays are not irradiated. The electrical energy storage time is set to be the same when X-ray image data is acquired and when correction X-ray image data is acquired. Here, the electric energy storage time is the time from when the reset operation is completed, that is, until the transistor 5425 is turned off at the time of resetting, and then the transistor 5425 is turned on to read the electric energy. is there. Therefore, the timing at which electric energy accumulation starts and the electric energy accumulation time are different for each scanning line 5422. The data conversion unit 545 performs offset correction on the configured X-ray image data based on the acquired X-ray image data for correction, and subsequently acquires the gain correction data stored in the memory 546 in advance. Gain correction based on the data. In the case of a panel composed of insensitive pixels or a plurality of small panels, the correction process derived from the panel is completed by continuously interpolating the image so that no discomfort occurs at the joints of the small panels. . In the present embodiment, in the data conversion unit 545, the force set control unit 53 that is a separate body from the force set control unit 53 may also serve as the data conversion unit 545.

[0092] The force set 5 then encrypts and transmits the image data corrected based on the X-ray image data (not corrected !, which may be the X-ray image data as it is). The That is, the force set 5 is provided with an encryption processing means for encrypting the X-ray image data to be transmitted, and the console 1 is provided with a decryption processing means for decrypting the encrypted X-ray image data. Such an encryption processing means may serve as the force set control unit 53 or the force set communication unit 52, or an encryption key processing unit may be provided separately from these. Further, such a decoding processing means may be served by the wireless repeater 6, the console communication unit 14, the console control unit 13 or the image processing unit 18, or a decoding key processing unit may be provided separately from these. Good. In the present embodiment, the encryption key processing means is also used as the force set communication unit 52, and the decryption key processing means is also used as the console communication unit 14.

[0093] As a technique suitable for such encryption, for example, WEP (Wired Equivalent Privacy: Encryption using a common key with a key length of 64 bits or 128 bits) defined by IEEE 802.11, IEEE802.lli specified TKIP (Temporal Key Integrity Protocol: Encryption that automatically changes the key to perform encryption), WPA (Wi-Fi Protected Access: TKIP¾EEE802.lx) Encryption) and AES (Advanced Encryption Standard) defined in IEEE802.lli, but are not limited thereto.

[0094] In addition, it is preferable to restrict access to the force set communication unit 52, the console communication unit 14, and the wireless repeater 6 by other devices. As such an access restriction function, in this embodiment, the SSID (Service Set Identifier: an ID unique to the connected device and ignores packets that do not match the SSID included in the packet header), MAC ( Media Access Control (Media Access Control) address (LAN card specific address) filtering function (registered ANY connection denial function (a function that is set as an access point and the client's SSID setting is “ANY”). The ability to connect to an access point with any SSID (when the client's SSID setting is “ANY”) is usually provided. For example, a function that does not include the SSID in the beacon signal, user authentication by the authentication (RADIUS) server specified in IEEE802.lx (reject all communication from unauthenticated terminals, and allow communication only to authenticated users) Other functions may be added.

That is, the force set 5 is set with a service set ID (SSID), and the force set communication unit 52 sets this setting to data obtained by compressing and encrypting the X-ray image data. It is transmitted by wireless communication together with the service set ID information. The console communication unit 14 of the console 1 is also set with a service set ID, and the console communication unit 14 only receives the data signal transmitted together with the information of the same service set ID as the set service set ID. Receive. In other words, it has an SSID function including an ANY connection rejection function that rejects connection with an access point when the client's SSID setting capability is “ANY”. The console 1 decodes and decompresses the received data force to obtain X-ray image data, and stores the obtained X-ray image data in the image storage unit 16. As a result, the occurrence of a situation in which data signals are mixed into devices other than the console 1 for the force set 5 is suppressed, while the data signals of other devices other than the device for the console 1 such as the force set 5 force S console Occurrence of a situation that falls into 1 is suppressed.

[0096] Then, the service set ID set in force set 5, the service set ID set in console communication means 14 of console 1, and the service set ID set in other devices are managed. The service set ID set in the force set 5 and the service set ID set in the console communication unit 14 are the same, and other than the console for the force set 5, and for the console 1 such as the force set 5 Because the service set ID set for devices other than the device and the service set ID set for force set 5 and console 1 are different, the service set ID console 1 for force set 5 For console 1 while the occurrence of a situation where data signals are mixed into other devices is more effectively suppressed Occurrence of a situation where data signals from other devices other than the device are mixed into the console 1 can be more effectively suppressed.

Further, the force set 5 is set with a MAC address that is a unique number, and transmits the set MAC address information together with the data transmitted by the force set communication unit 52. Also, it has a wireless repeater 6 connected via a communication cable from the console communication unit 14, and the wireless repeater 6 has its MAC address set only for a device that can wirelessly communicate with the wireless repeater 6. Because it has a MAC address filtering function that enables connection only to a terminal with a registered MAC address, that is, it can communicate wirelessly only with a device with a set MAC address. The occurrence of a situation where data signals of equipment other than the console 1 device are mixed into the console 1 can be suppressed more effectively.

[0098] In order to improve the communication speed, it is preferable to compress the X-ray image data or the image data corrected based on the X-ray image data with the force set 5 and decompress the data on the console 1 side. That is, the force set 5 is provided with compression processing means for compressing the X-ray image data to be transmitted, and the console 1 decompresses the compressed X-ray image data or the image data corrected based on the X-ray image data. It is preferable to provide a thawing processing means. Such a compression processing means may serve as the force set control unit 53 or the force set communication unit 52, or a compression processing unit may be provided separately from these. In addition, such a decompression processing means may serve as the wireless repeater 6, the console communication unit 14, the console control unit 13, or the image processing unit 18, or a decompression processing unit may be provided separately from these. .

In the present embodiment, the force setting communication unit 52 is also used as the compression processing means, and the console communication unit 14 is also used as the decompression processing means.

In the present embodiment, the X-ray image data stored in the memory 546 and the image data corrected based on the X-ray image data are compressed and then encrypted, and the data is transmitted from the force set communication unit 52. The data transmitted and received by the console communication unit 14 is preferably decrypted and then decompressed. That is, the X-ray image data compressed by the compression processing means or the image data corrected based on the X-ray image data is encrypted by the encryption means, and wirelessly transmitted from the force set communication unit 52 to the wireless repeater 6, Wireless repeater 6 is wirelessly transmitted X-ray image data obtained by decoding the data received by the console communication unit 14 by the decoding processing means or image data corrected based on the X-ray image data by the decompression processing means. It is preferable to thaw.

Specifically, as shown in FIG. 5, the encryption processing unit 52a as the encryption key processing unit in the force set communication unit 52 of the present embodiment performs the above-described X-ray image data (or X-ray data). Compression processing unit 52b as compression processing means for performing compression processing on image data (corrected based on image data), selector 52c for selecting an encryption method for the data subjected to compression processing by compression processing unit 52b, and compression processing unit The WEP encryption unit 52d encrypts the data compressed by 52b using the WEP method. The TKIP encryption unit 52e encrypts the data compressed by the compression processing unit 52b using the TKIP method. WEP encryption A transmission unit 52f that performs transmission processing to the console 1 of the data encrypted by the unit 52d or the TKIP encryption unit 52e. Then, the force set control unit 53 instructs the data to be compressed with respect to the X-ray image data (or image data corrected based on the X-ray image data) sent to the encryption processing unit 52a. First, compression processing unit 52b compresses X-ray image data (or image data corrected based on X-ray image data). Next, the selector 52c selects the encryption method instructed by the force set control unit 53, and the WEP encryption unit 52d or the TKIP encryption unit 52e performs the compression process in the compression processing unit 52b. Encrypt the data. After that, the transmitting unit 52f performs processing for transmitting the data encrypted by the WEP encryption unit 52d or the TKIP encryption unit 52e to the console 1. When the cassette control unit 53 is not instructed to compress the data, the compression processing unit 52b does not perform the compression processing, and first selects the encryption method by the selector 52c.

Also, the decoding key processing unit 14a as the decoding key processing means in the console communication unit 14 of the present embodiment performs processing for receiving data transmitted from the force set 5, as shown in FIG. 14b, selector 14c for selecting a decoding method for the data received by the receiving unit 14b, WEP decoding unit 14d for decoding the data processed by the receiving unit 14b by the WEP method, receiving Decodes data received by the unit 14b by the TKIP method using the TKIP decoding unit 14e, the WEP decoding unit 14d or the TKIP decoding unit 14e. A decompression processing unit 14f is provided as a decompression processing means for decompressing the performed data. When the receiving unit 14b receives the data sent from the force set 5 to the decryption processing unit 14a, first, the selector 52c selects an encryption method suitable for the data, and selects the selected WEP. The decryption unit 14d or the TKIP decryption unit 14e performs the decryption process on the data subjected to the reception process by the reception unit 14b. Next, the decompression processing unit 14f performs decompression processing on the data decrypted by the WEP decryption unit 14d or the TKIP decryption unit 14e, and the decompressed processing unit 14f saves the image as an image. It is designed to be sent to part 16. When the compression processing is not performed on the transmitted data, the decompression processing unit 14f does not perform the decompression processing and sends the decrypted data to the image storage unit 16 as it is.

In addition, the encryption method and the like are determined by switching the setting switch 56 so that an instruction is issued to the selector 52c. The setting switch 56 may be a software switch that is switched by an instruction issued by the force setting control unit 53 according to various conditions, or may be a hardware switch that can be switched at the operator's will.

[0102] When the console control unit 13 receives the X-ray image data, the console control unit 13 temporarily stores it in the image storage unit 16. Then, the console control unit 13 performs control so that thumbnail image data is created from the X-ray image data temporarily stored in the image storage unit 16 by the image processing unit 15. The display control unit 11 controls the display unit 3 to display a thumbnail image based on the created thumbnail image data.

[0103] Thereafter, the image processing unit 15 performs image processing on the X-ray image data based on the content of the operator's instruction and the order information from the HISZRIS71 or the like! The image-processed X-ray image data is displayed on the display unit 3 and simultaneously transmitted to the image storage unit 16 and stored as X-ray image data. Further, the image processing unit 15 re-images the X-ray image data based on an instruction from the operator, and the display unit 3 displays the image processing result of the X-ray image data. In addition, the network communication unit 18 transfers the X-ray image data to an imager 72, an image processing terminal 73, a view screen 74, a file server 75, etc., which are external devices on the network. When X-ray image data is transferred from console 1, the transferred external device functions correspondingly. That is, the imager 72 records this X-ray image data on an image recording medium such as a film. The image processing terminal 73 performs image processing of this X-ray image data and CAD (Computer Aided Diagnosis (Computer Diagnosis Support) is processed and stored in the file server 75. oView 74 displays an X-ray image based on this X-ray image data. The file server 75 stores this X-ray image data.

[0104] As described above, according to the present embodiment, since the data signal transmitted by wireless communication is a signal obtained from the encrypted data, the data signal that was intercepted and transmitted should leak. However, the intercepted person cannot practically obtain an X-ray image. In particular, since the data is encrypted after being compressed, the risk that the redundancy of the X-ray image itself (for example, the missing area of the X-ray image) is used in decryption is the risk of the compression process. Redundancy is reduced after being reduced, and it is reduced by encryption, increasing the difficulty of decryption. Even if the data signal that is intercepted and transmitted is leaked, the intercepted person obtains an X-ray image This is not practically possible.

[0105] Furthermore, the console 1 can receive a data signal from the force set 5 set with the same service set ID, and the occurrence of a situation where the data signal is mixed in from other devices can be suppressed. In addition, the occurrence of a situation in which data signals are mixed into other devices that are not console 1 for force set 5 is suppressed, while a situation in which data signals from other devices that are not console 1 for power set 5 are mixed into the console is prevented. It can be suppressed. In addition, it is possible to more effectively suppress the occurrence of a situation in which the data signal of other equipment that is not the force set 5 for the console 1 is mixed into the console.

[0106] The radiation image acquisition system 1 detects X-ray radiation and obtains X-ray image data. The X-ray image data acquired by the panel 54 is transmitted from the antenna 521 to a predetermined channel exceeding 1 GHz. The force set 5 that has the force set communication unit 52 that transmits by radio waves of the frequency, the channel that the force set 5 transmits, and the channels that other devices transmit by the radio waves of the frequency exceeding 1 GHz are managed. Is equipped with a console control unit 13 that controls other devices not to transmit with radio waves of a frequency exceeding 1 GHz when transmitting with microwaves of a predetermined channel, so communication with other devices is impossible It is possible to transmit large-capacity X-ray image data at high speed and in a timely manner using radio waves with a frequency exceeding 1 GHz.

[0107] Further, in the radiation image acquisition system of the present embodiment, a force set (radiation image acquisition device) Note) In step 5, subject information such as the subject's name and age is not added to the image data, and subject information is added to the image data in console 1.

In this case, even if the image data sent from the force set (radiation image acquisition device) 5 to the console 1 is decoded, the subject information is unknown and there is a risk of personal information leakage. Lower.

Furthermore, in the radiation image acquisition system of the present embodiment, the force setting (radiation image acquisition device) 5 does not add imaging information such as an imaging region and imaging conditions to the image data, and the console.

First, add shooting information to the image data.

In this case, even if the image data sent from the force set (radiation image acquisition device) 5 to the console 1 is decoded, both the subject information and the imaging information are unknown image data. The risk of information leakage is further reduced.

In this embodiment, the console communication unit 14 communicates with the force set control unit 53 of the force set 5 via the force set communication unit 52 and also with the X-ray source control unit 43 of the X-ray source 4. Although configured to communicate, the configuration of communication between the console 1 and other external devices is not limited to that illustrated here.

[0110] For example, as shown in FIG. 7, an X-ray irradiation switch 21 for inputting an imaging preparation instruction and an imaging instruction by the operator to the operation input unit 2, and an instruction content by the operator for the X-ray source control unit 43 An X-ray source instruction content input unit 22 for inputting to the console and a console instruction content input unit 23 for inputting the instruction content to the console 5 by the operator are provided. The X-ray irradiation switch 21 supplies the X-ray source control unit 43 to the X-ray source control unit 43. In addition to inputting the imaging preparation instruction and the imaging instruction, various instructions may be input to the X-ray source control unit 43 by the X-ray source instruction content input unit 22. In this case, the operation input unit 2 and the X-ray source control unit 43 are connected by a wired method or a wireless method, and are configured to be able to transmit and receive signals to each other.

[0111] In the present embodiment, the force set communication unit 52 transmits and receives signals to and from the console communication unit 14 of the console 1 via the wireless repeater 6, as an example. 6 may be connected to other external devices such as an X-ray source, and the force set communication unit 52 may transmit / receive signals to / from external devices other than the console 1.

[0112] In the above-described embodiment, the force set 5 transmits the image data after encrypting it. An example in which a preparation end signal or the like is transmitted without encryption is described. In this way, since there are two systems, encrypted communication and non-encrypted communication, it takes time for encryption for communication that requires encryption, and time for encryption for communication that does not require encryption. It is possible to reduce the time that is not necessary to achieve the purpose of encryption, while achieving the purpose of encryption. In particular, depending on the content of the communication, it becomes encrypted communication or non-encrypted communication. Therefore, it takes time for encryption for communication that requires encryption, and for communication that does not require encryption. Saves time so that the purpose of the encryption key can be achieved and the increase in time unnecessary to achieve the purpose of encryption can be suppressed.

[0113] It should be noted that examples of having two communication methods, encryption communication and non-encryption communication, are not limited to the following powers, for example.

• Although still image data is encrypted and communicated, video data is communicated without encryption. • A part of the image area (for example, the center of the screen) is encrypted and communicated, but the other area of the image (for example, the peripheral part of the image) is communicated without encryption.

• Depending on the operation of the operator, it communicates with encryption or without encryption. • Depending on the setting switch setting, communicate with encryption or without encryption.

• Depending on the instruction signal from the console, communicate with encryption or without encryption.

[0114] These selections may be made in all cases or only in some cases. Examples that can be selected only in some cases include, but are not limited to, the following examples.

'The power set preparation completion signal is fixed to be transmitted without encryption, but the image data can be selected between encrypted communication and non-encrypted communication.

• Although still image data is fixed to encrypted communication, encrypted or non-encrypted communication can be selected for video data.

• Image data that satisfies the specified conditions (for example, image data shot in the high image quality mode) is fixed to encrypted communication, but image data that does not satisfy the specified conditions (for example, image data shot in the low image quality mode) Encryption communication and non-encryption communication can be selected. 'When console direction instruction signal is received, encryption communication and non-encryption communication can be selected according to the instruction signal, but when it is not received, it is fixed to encryption communication.

[0115] Also, in this embodiment, an example in which encryption is performed using two encryption methods has been described. However, in at least some cases, an encryption method used from one or more encryption methods is used. You may choose to select it. In this case, for example, it is possible to select an appropriate encryption method such as encryption strength, Z time, and Z characteristics according to the user's request and usage environment, so that the purpose of encryption can be achieved while achieving the purpose of encryption. Increase in unnecessary time can be suppressed. As a specific example, only hospital personnel and patients enter the room, but in the X-ray room, computation processing such as WEP is encrypted with a relatively light encryption method, allowing patient personnel to enter the room. In hospital rooms, it is possible to select encryption using a cryptographic method such as TKIP, which requires more computational processing than the cryptographic method such as WEP but is difficult to decrypt. The selection of this lightweight encryption method and heavy encryption method is not limited to the following examples.

[0116] In the first example, the console control unit 13 of the console 1 controls the console communication unit 14 according to the operation input from the operation input unit 2, and the force of the console communication unit 14 is also transmitted. The force setting control unit 53 makes a selection according to the selection method selection signal. At this time, if the force set communication unit 52 does not receive the encryption method selection signal, the previous encryption method is selected, but if the initial strength is not received, the heavy encryption method is selected. To do.

In the second example, a switch is provided in the force set 5 and the force set control unit 53 selects the encryption method in accordance with the switching of the switch. In this case, when the force set 5 is delivered, the switch is switched to select the encryption method according to the request of the delivery destination.

In the third example, a switch is provided on the surface of the force set 5 or outside, and the force set control unit 53 selects the encryption method in accordance with the switching of the switch. In this case, the switch is switched so as to select a desired encryption method in accordance with the environment where the operator uses the force setting 5 for shooting.

[0117] Further, as an example of communicating still image data without encryption, moving image data is transmitted without encryption, for example, the following examples are given. The first example includes a determination unit that determines whether the radiation image data is a still image or a moving image, and the encryption processing unit performs encryption processing or encryption processing according to the determination result of the determination unit. There is not. For example, cassette The control unit 53 determines whether the radiation image data is a still image or a moving image power, and the selector 52C sends the compressed radiation image data to the TKIP encryption unit 52e or the WEP encryption unit 52d according to the determination result. Send them to the transmitter 52f without passing through them. In the second example, the encryption processing means performs encryption processing or does not perform encryption processing depending on whether the radiation image data is a still image or a moving image. For example, the selector 52C sends the power to the TKIP encryption unit 52e or the WEP encryption unit 52d depending on whether the radiation image data is a still image or a moving image, and sends it to the transmission unit 52f without passing through these.

In this way, still image data is encrypted and communicated. By transmitting video data without encryption, still image data that has a lower data capacity than moving images but is useful for diagnosis While the communication is encrypted, the risk of eavesdropping is reduced, and the data capacity is relatively large.This is a means for acquiring still image data. The risk of eavesdropping is relatively small. In many cases, video data is communicated without encryption, so there is a risk of eavesdropping. Instructions for acquiring still images in a timely manner.

In addition, as an example in which a part of the image (for example, the center of the screen) is encrypted and communicated, but another region of the image (for example, the peripheral part of the image) is communicated without encryption, for example, An example is given. The first example has image decomposition means for dividing image data of a specific area from image data of a specific area and image data of an area other than the specific area from the radiation image data, and the image data of the specific area decomposed by the image decomposition means. The encryption processing means encrypts the data based on the data. For example, an image decomposition unit (not shown) divides the radiation image data into image data of a specific area and image data of an area other than the specific area. After the compression process, the selector 52C sends the compressed image data of the specific area to the TKIP encryption unit 52e or the WEP encryption unit 52d, and the image data of the area other than the compressed specific area is Then, the data is sent to the transmission unit 52f without passing through. In the second example, the encryption processing means performs encryption processing only on image data in a specific area. For example, the selector 52C determines whether or not it is a specific area of the compressed image data. If it is a specific area, it is sent to the TKIP encryption unit 52e or the WEP encryption part 52d. Send to transmitter 52f. In this way, the ability to communicate by encrypting a part of the image area is useful for diagnosis by appropriately setting the part area by communicating the other area of the image without encryption. The area is encrypted, reducing the risk of interception, while the other areas are not encrypted.This means that the area can be communicated faster than encrypting the entire area, and images can be stored and displayed quickly. it can.

Examples of the specific area include the center of the screen, the area other than the blank area (other than the high radiation dose value area), and the like.

In addition, examples of performing communication with encryption or performing communication without encryption in accordance with the operation of the operator include the following examples. The first example has a determination means for determining the operation of the operator, and the encryption processing means has the power to perform encryption processing or encryption processing according to the determination result of the determination means. Hang. For example, the force set control unit 53 determines the operation of the operator (for example, the state of the operation switch), and the radiographic image data compressed by the selector 52C according to the determination result is TKIP encryption unit 52e or WEP encryption. The data is sent to the part 52d or sent to the transmitting part 52f without passing through these parts. In the second example, the encryption processing unit performs encryption processing or does not perform encryption processing according to the state of the operation unit operated by the operator. For example, a switch (not shown) that can be operated by the operator is provided in the force set, and the radiographic image data compressed by the selector 52C in conjunction with this switch is sent to the TKIP encryption unit 52e or the WEP encryption unit 52d. Then, the data is sent to the transmission unit 52f without passing through. In this way, depending on the operation of the operator, communication is performed with encryption, or communication without encryption is performed. When shooting, encryption is used for communication to reduce the risk of eavesdropping, but for shooting where the risk is low even if eavesdropping is taken in a room with wireless communication security established, encryption is not performed. In addition, images can be stored and displayed quickly by communicating at high speed.

Further, examples of performing communication with encryption or not performing encryption according to the setting of the setting switch include the following examples. In the first example, the encryption processing means performs encryption processing or does not perform encryption processing according to the setting switch provided in the force set. For example, a switch (not shown) is provided inside the cassette so that the manufacturer or sales company can operate it at the time of shipment, and the radiographic image data compressed by the selector 52C in conjunction with this switch is used as the TKIP encryption unit 52e or WEP. Sent to encryption section 52d Without sending them, send them to the transmitter 52f. In the second example, the encryption processing means performs encryption processing or does not perform encryption processing according to the state of the operation unit operated by the operator. For example, the force set is provided with a switch (not shown) that can be operated by an operator, and the radiographic image data compressed by the selector 52C in conjunction with this switch is sent to the TKIP encryption unit 52e or the WEP encryption unit 52d, Send them to the transmitter 52f without passing through them. In this way, depending on the setting switch setting, communication is performed with encryption, or communication is performed without encryption.For example, if a facility with poor wireless communication security is intercepted, the risk increases. In the case of a shooting facility, the setting switch is set to encrypt and communicate to reduce the risk of eavesdropping, and there is no risk even if eavesdropping is taken in a room where wireless communication security is established. In the case of small-scale facilities, setting to communicate without encryption enables high-speed communication and quick storage and display of images. A setting switch is provided inside the cassette so that it cannot be operated by the operator, so if the setting switch is changed unintentionally and intercepted, it will be encrypted in the case of a high-risk shooting facility. If the facility communicates without hesitation or is intercepted and the risk is small, the risk of slowing communication by encryption can be reduced.

In addition, as examples in which communication is performed with encryption or communication without encryption according to an instruction signal of console power, the following examples are given. In the first example, the encryption processing means performs encryption processing or does not perform encryption processing according to encryption necessity information received from the console 1 and indicating whether or not the encryption power is transmitted. For example, the force setting control unit 53 determines the encryption necessity information from the console 1, and the radiation image data compressed by the selector 52C is converted into the TKIP encryption unit 52e or the WEP encryption according to the determination result. The force sent to the No. d part 52d It sends to the transmission part 52f without passing these. In the second example, the cassette control unit 53 determines whether encryption processing is necessary or not according to information received from the console 1 (for example, shooting condition information or console 1 information), and In response, the encryption processing means performs encryption processing or does not perform encryption processing. For example, it is determined from the information from the console 1 whether or not the force setting control unit 53 has the power to perform encryption processing. Based on the determination result, the radiographic image data compressed by the selector 52C is converted into the TKIP encryption unit 52e. Or, the data to be sent to the WEP encryption unit 52d, and sent to the transmission unit 52f without passing through them. In this way, in response to an instruction signal from the console, communication is performed with encryption or communication without encryption, and in the case of shooting with a high risk when intercepted, it is encrypted and transmitted. In the case of shooting with low risk even if intercepted while reducing the risk of interception, it is possible to quickly store images and display them without using encryption, The risk of incorrect settings when manipulating and placing force sets is also reduced.

In addition, the force set preparation completion signal is fixed to be transmitted without encryption, but as an example of the image data that can be selected between encrypted communication and non-encrypted communication, the following examples are given. It is done. When the information transmitted from the force set 5 is image data, the encryption processing means encrypts and transmits the information according to the information received from the console 1 or transmits the image without performing the encryption processing. If it is not data, it is sent without encryption. For example, when the information transmitted from the force set 5 is image data, after the compression processing unit 52b performs compression processing, the radiographic image data compressed by the selector 52C according to the information received from the console 1 is converted into the TKIP encryption key. The data sent to the part 52e or the WEP encryption key part 52d is sent to the sending part 52f without passing through them. If it is not image data, the compression processing unit 52b does not perform compression processing, and the selector 52C sends the data to the transmission unit 52f without passing through the TKIP encryption unit 52e'WEP encryption unit 52d.

In this way, the force set preparation completion signal is fixed to be transmitted without encryption. However, since image data can be selected between encrypted communication and non-encrypted communication, there is no problem even if intercepted. The power set preparation completion signal can be transmitted at high speed without encryption, and the image data can be selected to reduce the risk of being intercepted by encrypted communication or to communicate at high speed by non-encrypted communication. .

Still image data is fixed to encrypted communication, but moving image data can be selected between encrypted communication and non-encrypted communication, for example. In the first example, when the information transmitted from the cassette 5 is moving image data, the encryption processing means performs the encryption processing and transmits the information according to the information received from the console 1, or does not perform the encryption processing. If it is still image data, it is encrypted before being sent. For example, when the information transmitted from the force set 5 is moving image data, after the compression processing unit 52b performs compression processing, the radiographic image data compressed by the selector 52C according to the information received from the console 1 is converted into TKIP. Send to the encryption unit 52e or the WEP encryption unit 52d, or send to the transmission unit 52f without passing through them. O For still image data, after the compression processing unit 52b performs compression processing, the selector 52C performs the compression processing. The image data is sent to the TKIP encryption unit 52e or the WEP encryption unit 52d. In the second example, when the information transmitted from the force set 5 is moving image data, the encryption processing means encrypts and transmits it according to the setting switch inside the force set 5 or the operation of the operator. Sending without encryption processing, or for still image data, sending with encryption processing. For example, when the information transmitted from the force set 5 is moving image data, after the compression processing unit 52b performs compression processing, the selector 52C is compressed according to the setting switch inside the force set 5 and the operation of the operator. The radiation image data is sent to the TKIP encryption unit 52e or the WEP encryption unit 52d, or sent to the transmission unit 52f without passing through them. In the case of still image data, after the compression processing unit 52b performs compression processing, the selector 52C sends the compressed radiation image data to the TKIP encryption unit 52e or WEP encryption unit 52d.

In this way, still image data is fixed to encrypted communication. Since moving image data can be selected between encrypted communication and non-encrypted communication, the data capacity is low compared to moving images, but still useful for diagnosis. Image data is encrypted and communicated to reduce the risk of eavesdropping, while the data capacity is relatively large. For video data, the risk of eavesdropping is low. Communicating without conversion, it is possible to prevent the video that was sent without encryption processing from being interrupted, and to be interrupted, and when there is a high risk of being intercepted, it is encrypted. The risk of interception can be reduced by communicating.

In addition, image data that satisfies a predetermined condition (for example, image data shot in a high-quality mode) is fixed to encrypted communication but does not satisfy the predetermined condition (for example, an image shot in a low-quality mode). Examples of data) that can be selected from encrypted communication and non-encrypted communication include the following. In the first example, the force setting control means determines whether or not the image data satisfies a predetermined condition, and when the image data satisfies the predetermined condition, the encryption processing means performs encryption processing and transmits the image data. Does not meet the prescribed conditions! In the case of / ヽ, depending on the information received from the console 1, the encryption processing means transmits the encrypted data or transmits it without performing the encryption processing. For example, the force setting control unit 53 determines whether or not the radiation image data is image data captured in the high image quality mode, and the radiation image data is determined. If the force setting control unit 53 determines that the image data is the image data shot in the high quality mode, the compression processing unit 52b performs compression processing, and then the selector 52C encrypts the compressed radiation image data with TKIP encryption. The data is sent to the unit 52e or the WEP encryption unit 52d, encrypted, and then sent to the communication unit 52f. On the other hand, if the force setting control unit 53 determines that the radiation image data is image data taken in the low image quality mode, whether or not the force setting control unit 53 performs encryption processing according to the information received from the console 1. After the compression processing unit 52b performs compression processing, the selector 52C passes the compressed radiation image data through the TKIP encryption unit 52e or the WEP encryption unit 52d according to the determination result of the force setting control unit 53. Without being sent to the communication unit 52f or sent to the TKIP encryption unit 52e or the WEP encryption unit 52d for encryption processing and then sent to the communication unit 52f. In the second example, the force setting control means determines whether or not the image data satisfies a predetermined condition, and when the image data satisfies the predetermined condition, the encryption processing means performs an encryption process and transmits the image data. If the condition does not satisfy the predetermined condition, the encryption processing means transmits the encrypted data according to the setting switch inside the force set 5 or the operation of the operator, or transmits it without performing the encryption processing. For example, the force setting control unit 53 determines whether or not the radiation image data is image data captured in the high quality mode, and if the radiation image data is image data captured in the high quality mode, the force setting control unit 53 53, if the compression processing unit 52b performs compression processing, the selector 52C sends the compressed radiation image data to the TKIP encryption unit 52e or the WEP encryption unit 52d, performs encryption processing, and then performs communication. Send to part 52f. On the other hand, when the force setting control unit 53 determines that the radiation image data is image data taken in the low image quality mode, the force setting control unit 53 in accordance with the operation of the setting switch inside the force setting 5 And the compression processing unit 52b performs compression processing, and then the selector 52C converts the compressed radiation image data into the TKIP encryption unit according to the determination result of the force setting control unit 53. The data is sent to the communication unit 52f without passing through the 52e or WEP encryption unit 52d, or sent to the TKIP encryption unit 52e or the WEP encryption unit 52d, encrypted, and then sent to the communication unit 52f.

In this way, image data that satisfies the predetermined condition is fixed to encrypted communication, but image data that does not satisfy the predetermined condition can be selected as encrypted communication or non-encrypted communication. Image data that is likely to be large is fixed in encrypted communication and intercepted The risk of being intercepted is reduced, while the probability of being intercepted is low, and the risk of image data being intercepted is reduced, and encrypted communication that can reduce the risk of interception and non-encrypted communication that can be communicated at high speed Since it can be selected, it is possible to respond flexibly according to the situation in each case, while also reducing the overall risk.

In addition, when an instruction signal with console power is received, encrypted communication or non-encrypted communication can be selected according to the instruction signal.

For example, the following examples are given. In the first example, the encryption processing means performs encryption processing or encryption processing according to the encryption necessity information indicating whether or not to transmit the encrypted message received from the console 1. I'll do my best. On the other hand, when the encryption key necessity information is not received from the console 1, the encryption processing means performs encryption processing. For example, console

The force setting control unit 53 determines whether or not the encryption necessity information from 1 has been received and the encryption necessity information when it is determined that it has been received, and the selector 52C is compressed according to this determination result. Sends the radiographic image data to the TKIP encryption unit 52e or the WEP encryption unit 52d. The second example is based on whether or not predetermined information has been received from console 1 and the predetermined information received from console 1 when it is determined that it has been received (for example, shooting condition information or console 1 information). Then, the force setting control unit 53 determines whether or not encryption processing is necessary, and the encryption processing means performs encryption processing or performs encryption processing according to the result. For example, it is determined whether or not the force setting control unit 53 has the power to perform encryption processing from the predetermined information received from the console 1 when it is determined that the predetermined information has been received from the console 1, Depending on the determination result, the selector 52C sends the compressed radiation image data to the TKIP encryption unit 52e or WEP encryption unit 52d, or sends it to the transmission unit 52f without passing through them.

In this way, when an instruction signal is received from the console, encryption communication and non-encryption communication can be selected according to the instruction signal, but if not received, it is intercepted by fixing to encryption communication. In case of high-risk shooting and if it is not clear whether the shooting risk is high when intercepted because it did not receive a console force instruction signal, it is encrypted and communicated to reduce the risk of interception. When shooting with low risk even if intercepted, it is possible to communicate quickly and store and display images without encrypting them, The risk of mistaken settings when operating or placing a telescope is also reduced.

[0118] In the present embodiment, an example is shown in which force set 5 and console 1 have a one-to-one correspondence. However, the present invention is not limited to this, and force set and console have a one-to-one M and N pair. It can be used in correspondence with 1, N to M (N and M are natural numbers of 2 or more). At this time, a network between the force set and the console is provided, the correspondence between the force set and the console is stored in the correspondence information holding unit, and the correspondence information holding unit is provided on the network or in the console. It is preferable to control the force set.

[0119] In this embodiment, both the console 1 and the force set 5 supply a system or an apparatus with a storage medium that records a software program for realizing the functions of the above-described embodiments. It goes without saying that this can also be achieved by the computer (or CPU or MPU) of the device reading and executing the program stored in the storage medium. In addition, as a storage medium for storing a program, etc., it may be stored in a storage medium such as a non-volatile memory, a volatile memory backed up by a power source, a ROM memory, an optical disk, a hard disk such as a hard disk, or a magneto-optical disk. Yeah!

In addition, an OS (basic system or operating system) that runs on a computer based on the instructions of the program that not only realizes the functions of the above-described embodiments by executing the program read by the computer. Needless to say, a part or all of the actual processing is performed, and the case where the functions of the above-described embodiment are realized by the processing.

Furthermore, after the program whose storage medium power has been read is written in the memory of the function expansion board inserted into the computer or the function expansion unit connected to the computer, the function expansion is performed based on the instruction of the program code. It goes without saying that the CPU or the like provided in the board or function expansion unit performs part or all of the actual processing and the functions of the above-described embodiments are realized by the processing.

Further, such a program may be provided from outside via a network or a line. Even when an externally supplied program is used, the program is stored in a non-volatile memory, a power-backed up volatile memory, a magnetic disk such as an optical disk or a hard disk, or a storage medium such as a magneto-optical disk. Well, ... [0120] [Common to the above embodiments]

As described above, radiation image acquisition means for obtaining radiation image data by radiation imaging, and encryption processing means for obtaining data encrypted from image data based on the radiation image data acquired by the radiation image acquisition means, A radiological image acquisition apparatus comprising: a communication means for obtaining a data signal from data based on the data encrypted by the encryption processing means and transmitting the data signal by wireless communication; and the radiographic image acquisition apparatus Console communication means for receiving data signals and obtaining encrypted data; decryption processing means for decrypting data based on the encrypted data obtained by the console communication means; A console having image storage means for storing image data based on the radiation image data obtained by the decoding processing means; Since radiographic image acquisition system provided can event transmitted data signals be intercepted, the person who has intercepted obtain a radiation image from being able to substantially.

[0121] Further, the radiological image acquisition apparatus includes a compression processing unit that obtains data compressed from image data based on the radiographic image data acquired by the radiological image acquisition unit, and the encryption processing unit includes The data obtained by the encryption processing is obtained from the data based on the data compressed by the compression processing means, and the console is decompressed from the data based on the data obtained by the decryption processing means. The image storage means stores image data based on the radiation image data obtained by the decompression processing means, and therefore encrypts the compressed data. As a result, the time required for encryption is shorter than the time required for encrypting radiation image data itself, and the time required for wireless communication is also shortened. Together with the the time taken is shorter thawing, it can be stored quickly image data in the console. In addition, it can be quickly displayed on the display unit. In addition, the risk that the redundancy of the radiographic image itself (for example, the missing region of the radiographic image) is used in cryptanalysis is reduced by encryption after the redundancy is suppressed by the compression process. However, the difficulty of decryption increases, and even if the intercepted data signal is leaked, the intercepted person cannot substantially obtain a radiographic image.

[0122] Furthermore, a service set ID is set, and the radiation image is detected by detecting the irradiated radiation. A radiological image acquisition device comprising: a radiological image acquisition unit that obtains image data; a communication unit that acquires data from the radiographic image acquisition unit and transmits the data together with information on the set service set ID; and a service Console communication means for receiving data transmitted together with information of the same service set ID, in which set IDs are set, and image storage means for storing image data based on radiation image data obtained by the console communication means So that the console can receive data signals from radiographic image acquisition devices with the same service set ID, and other devices can prevent the occurrence of data signals being mixed in. be able to.

[0123] Furthermore, the service set ID set in the radiological image acquisition apparatus, the service set ID set in the console communication means, and the service set set in another device are set. The service set ID that is managed and set in the radiological image acquisition apparatus is the same as the service set ID that is set in the console communication means, and is also used in the console for the radiological image acquisition apparatus. It is not a radiological image acquisition device for consoles. The service set ID set for other devices is different from the service set ID set for the radiological image acquisition device. As a result, the occurrence of a situation in which the data signal is mixed into other equipment other than the console for the radiographic image acquisition device is suppressed, and the console is free to be used. There other devices power of the data signal by the line image acquisition apparatus as possible out to suppress the occurrence of a situation that slip into the console.

[0124] Further, the radio communication device has a radio repeater connected via a cable connected to the console communication means, and the radiographic image acquisition device is set with a unique number and set together with data transmitted by the communication means. The wireless repeater is set with a unique number of a device capable of wireless communication, and wirelessly communicates only with a device with the set unique number. Therefore, it is possible to more effectively suppress the occurrence of a situation in which data signals of other devices that are not console radiographic image acquisition devices are mixed into the console.

[0125] Further, the radiological image acquisition apparatus controls the radiological image acquisition unit and the communication unit, the radiological image acquisition unit, the communication unit, and the control unit. Since the power set has a power supply that supplies power to drive the camera, no cable is required for image data transmission or power supply, and photography can be performed in a cable-less state. Therefore, it is possible to improve operability, shooting efficiency, etc., since there is no need to shoot while taking care not to get tangled in the subject.

[0126] Furthermore, since the radiological image acquisition apparatus has a memory for temporarily storing image data based on the radiographic image data obtained by the radiological image acquisition means, the radiographic image data can be temporarily stored. Therefore, processing such as encryption can be easily performed, and transmission can be performed at a communication speed corresponding to the communication state.

[0127] Furthermore, since the subject information is added to the image data in the console, the subject information is unknown even if the image data transmitted from the radiation image acquisition device to the console is decoded. It is image data and the risk of leakage of personal information is reduced.

Furthermore, since the imaging information is added to the image data in the console, even if the image data transmitted from the radiographic image acquisition device to the console is decoded, both the subject information and the imaging information are present. It is unknown image data, and the risk of leakage of personal information is further reduced.

[0129] Further, since there are a plurality of communication methods including encrypted communication for transmitting data after being encrypted and non-encrypted communication for transmitting data without being encrypted, encryption is required for communication that requires encryption. For communication that does not require encryption key, the time for encryption key is omitted, and the increase in unnecessary time can be suppressed while achieving the purpose of encryption.

[0130] Furthermore, since a communication method is selected from a plurality of the communication methods according to the communication content, it takes time to encrypt the communication that requires encryption according to the communication content. For communications that do not need to be saved, the time for encryption can be saved, and the increase in extra time can be suppressed while achieving the purpose of encryption.

[0131] Furthermore, since a plurality of communication method powers are selected according to predetermined conditions, for example, in an X-ray imaging room that is completely covered with a lead plate and ensures communication interception security, Non-encrypted communication saves time for encryption and secures communication interception security for general wards! When taking pictures in obscene locations, it would take a long time to perform encryption processing and perform encrypted communication! Like the same radiological image acquisition device, encrypted communication is desired in a case-free case. It is possible to cope with both of cases where there is a case where the communication is desired and non-encrypted communication is desired.

[0132] Furthermore, since the control signal or control information is transmitted from the console to the radiographic image acquisition device by the non-encrypted communication, the control signal can be transmitted in a timely manner without the time for encryption.

[0133] Furthermore, since an encryption method to be used can be selected from a plurality of encryption methods, an appropriate encryption method such as encryption strength, Z time, and Z characteristics can be selected according to the user's request, usage environment, and the like.匕 The method can be selected, and the increase in time unnecessary for achieving the purpose of encryption can be suppressed while achieving the purpose of encryption.

A radiation image acquisition unit that obtains radiation image data by radiography; an encryption processing unit that obtains data subjected to encryption processing from image data based on the radiation image data acquired by the radiation image acquisition unit; Since the power set includes a communication unit that obtains a data signal from data based on data encrypted by the encryption processing unit and transmits the data signal by wireless communication, even if the transmitted data signal is intercepted, While it is possible to make it impossible for an intercepted person to obtain a radiological image, it is also possible to perform force set imaging without a communication line with few restrictions on handling.

Further, the image processing apparatus includes compression processing means for obtaining compressed data from image data based on the radiation image data acquired by the radiation image acquisition means, and the encryption processing means is compressed by the compression processing means. Since the encrypted data is obtained from the data based on the obtained data, the time required for the encryption is obtained because the compressed data is encrypted rather than the radiation image data itself is encrypted. Coupled with the reduction in the time required for wireless communication, the image data can be quickly saved on the console. Moreover, it can display on a display part promptly. In addition, the risk that the redundancy that the radiographic image itself has (for example, the missing region of the radiographic image) is used for cryptanalysis is encrypted after this redundancy is suppressed by the compression process. Therefore, even if the data signal that was intercepted and transmitted is leaked, the intercepted person can practically not obtain the radiographic image.

Console communication means for receiving a data signal and obtaining encrypted data; and data based on the encrypted data obtained by the console communication means Since the console has decoding processing means for decoding and image storage means for saving image data based on the radiation image data obtained by the decoding processing means, even if the transmitted data signal is intercepted The data based on the radiation image data can be stored from the encrypted data so that the intercepted person can not substantially obtain the radiation image.

Furthermore, it has a decompression processing means for obtaining decompressed data from the data based on the data obtained by the decoding processing means, and the image storage means stores the image data based on the radiation image data obtained by the decompression processing means. Because it is stored, there is a risk that the redundancy of the radiographic image itself (for example, the missing region of the radiographic image) is used for cryptanalysis. In addition, the time required for encryption is shorter than that for encrypting radiation image data itself, and the time required for wireless communication is also shortened. Data based on radiation image data can be saved from the encoded data, so the time required for decompression can be shortened, and image data can be stored quickly on the console. It can be. In addition, it can be promptly displayed on the display unit. In addition, the difficulty of cryptanalysis increases, and even if a data signal that has been intercepted and transmitted is leaked, the intercepted person cannot substantially obtain a radiation image.

Also, an encryption processing means for obtaining encrypted data from the image data based on the radiation image data, and a digital data signal based on the data encrypted by the encryption processing means are obtained and transmitted by wireless communication. A force set including communication means, console communication means for receiving data signals transmitted from the radiation image transmitting apparatus and obtaining encrypted data, and the encryption processing obtained by the console communication means A radiation image receiving apparatus comprising: a decoding processing unit that decodes data based on the received data; and an image storage unit that stores image data based on the radiation image data obtained by the decoding processing unit. Because it is an image communication system, even if the transmitted data signal is intercepted, the intercepted person can obtain a radiation image. It is possible to qualitatively can it! /, As.

Further, the force set is compressed from image data based on the radiation image data. Compression processing means for obtaining the processed data, wherein the encryption processing means obtains encrypted data from data based on the data compressed by the compression processing means, and receives the radiation image The apparatus has decompression processing means for obtaining decompressed data from data based on the data obtained by the decoding processing means, and the image storage means is an image based on radiation image data obtained by the decompression processing means. Since data is stored, the time required for encryption is shortened and the time required for wireless communication is shortened because encryption is performed on the compressed data rather than encrypting the radiation image data itself. Coupled with the shortening of the time required for decompression, the image receiving device can quickly store the image data. Moreover, it can display on a display part promptly. In addition, the redundancy of the radiographic image itself (for example, the missing region of the radiographic image) is reduced by the encryption after the redundancy is suppressed by the risk power compression process used in decryption. However, the difficulty of decryption increases, and even if a data signal that is intercepted and transmitted is leaked, the intercepted person can be substantially prevented from obtaining a radiographic image.

The radiographic image acquired by the radiological image acquiring means is mounted on a computer mounted on a force set having radiographic image acquiring means for obtaining radiographic image data by radiography and a communication means for transmitting data signals by wireless communication. An encryption processing function for obtaining encrypted data from image data based on the data, and a data signal obtained from the data based on the data encrypted by the encryption processing function is transmitted to the communication means by wireless communication Therefore, even if the data signal transmitted by this program is intercepted by this program, the person who intercepted should be able to obtain a radiological image substantially. Can do.

A compression processing function for obtaining compressed data from image data based on the radiation image data acquired by the radiation image acquisition means; and the encryption processing function is compressed by the compression processing function. Since the encrypted data is obtained from the data based on the acquired data, this program uses this force set to encrypt the compressed data. Therefore, the radiographic image data itself is encrypted. However, coupled with the reduction in time required for encryption and the reduction in time required for wireless communication and the reduction in time required for decompression, image data can be stored quickly on the console. wear. Moreover, it can display on a display part promptly. In addition, the risk that the redundancy of the radiographic image itself (for example, the missing region of the radiographic image) is used for cryptanalysis is reduced by encryption after this redundancy is suppressed by the compression process. However, the difficulty of cryptanalysis increases, and even if a data signal that has been intercepted and transmitted is leaked, the intercepted person can substantially not obtain a radiation image.

In addition, the console communication means that receives the data signal and obtains the encrypted data and the image storage means that stores the image data, the computer mounted on the console includes the console communication means obtained by the console communication means. A decryption processing function for decrypting data based on the encrypted data; an image storage function for causing the image storage unit to store image data based on the radiation image data obtained by the decryption processing unit; Therefore, even if the transmitted data signal is intercepted, this program allows the console to obtain data that has been encrypted so that the person who intercepted cannot obtain a radiological image. Data based on radiation image data can be saved.

A decompression processing function for obtaining decompressed data from data based on the data obtained by the decryption processing function, and the image storage function is an image based on the radiation image data obtained by the decompression processing function. The program according to claim 23, wherein the data is stored in the image storage means, so that the console allows the radiation image itself to have redundancy (for example, a blank area of the radiographic image). Is reduced after this redundancy is reduced by the compression process, and the time required for encryption rather than encrypting the radiographic image data itself is reduced. And the time required for wireless communication is shortened.Data based on compressed data is converted from encrypted data to radiation image data. Since the turn off the data in the storage, the time required for the decompression is shortened, it kills in a store quickly image data in the console. Moreover, it can display on a display part in speed and force. In addition, the difficulty of cryptanalysis increases, and even if a data signal that has been intercepted and transmitted is leaked, the intercepted person cannot substantially obtain a radiation image.

Industrial applicability As described above, the present invention is useful in the field of radiography, particularly in the medical field.

Claims

The scope of the claims

[1] Radiation image acquisition means for obtaining radiation image data by radiography, encryption processing means for obtaining data encrypted from image data based on the radiation image data acquired by the radiation image acquisition means, A radiological image acquisition apparatus comprising: a communication unit that obtains a data signal from data based on data encrypted by the encryption processing unit and transmits the data signal by wireless communication;

Console communication means for receiving data signals transmitted from the radiological image acquisition apparatus and obtaining encrypted data, and decrypting data based on the encrypted data obtained by the console communication means A console having decoding processing means and image storage means for storing image data based on the radiation image data obtained by the decoding processing means;

A radiation image acquisition system comprising:

[2] The radiological image acquisition device includes a compression processing unit that obtains compressed data from image data based on the radiation image data acquired by the radiological image acquisition unit, and the encryption processing unit includes the encryption processing unit The data obtained by the encryption processing is obtained from the data based on the data compressed by the compression processing means,

The console has decompression processing means for obtaining data that has been decompressed and processed based on the data obtained by the decoding processing means, and the image storage means adds the radiation image data obtained by the decompression processing means to the radiation image data. The radiographic image acquisition system according to claim 1, which stores image data based thereon.

[3] A service set ID is set, and a radiation image acquisition unit that detects irradiated radiation and obtains radiation image data, and obtains data from the radiation image acquisition unit and sets the service set A radiographic image acquisition apparatus comprising: communication means for transmitting by wireless communication together with ID information;

Console communication means for setting service set ID and receiving data transmitted together with information of the same service set ID, and image storage means for saving image data based on radiation image data obtained by the console communication means A radiographic image acquisition system according to claim 1 or 2, further comprising: a console having:

[4] Manage the service set ID set in the radiation image acquisition device, the service set ID set in the console communication means, and the service set HD set in other devices,

The service set ID set in the radiological image acquisition apparatus and the service set ID set in the console communication means are the same,

It is not a console for the radiological image acquisition apparatus, nor a radiographic image acquisition apparatus for the console, and is set in other equipment, and a service set set in the radiological image acquisition apparatus. The radiation image acquisition system according to claim 3, wherein the service set ID is different from the ID.

[5] The console communication means power has a wireless repeater connected via a cable, and the radiographic image acquisition device is set with a unique number, and the unique information set together with data transmitted by the communication means Number information is sent,

In the wireless repeater, a unique number of a device capable of wireless communication is set, and wireless communication is performed only with respect to the device with the set unique number. The radiation image acquisition system according to any one of the preceding items.

[6] The radiological image acquisition apparatus comprises:

Control means for controlling the radiological image acquisition means and the communication means;

A power supply for supplying electric power for driving the radiation image acquisition means, the communication means, and the control means;

The radiation image acquisition system according to any one of claims 1 to 5, wherein the radiation image acquisition system is a force set having:

[7] The radiographic image acquisition device according to any one of claims 1 to 6, wherein the radiographic image acquisition device includes a memory for temporarily storing image data based on the radiographic image data obtained by the radiographic image acquisition means. The radiation image acquisition system according to claim 1.

8. The radiographic image acquisition system according to any one of claims 1 to 7, wherein subject information is added to image data in the console.

[9] The radiographic image acquisition system according to claim 8, wherein imaging information is added to image data in the console.

[10] Any one of claims 1 to 9 having a plurality of communication methods including encrypted communication for transmitting data after being encrypted and non-encrypted communication for transmitting data without being encrypted. The radiation image acquisition system according to claim 1.

[11] The radiation image acquisition system according to claim 10, wherein a plurality of communication method power communication methods are selected according to communication contents.

[12] Claims for selecting a plurality of communication method power communication methods according to a predetermined condition

The radiation image acquisition system according to item 10 or item 11.

13. The radiographic image acquisition system according to any one of claims 10 to 12, wherein a control signal or control information is transmitted from the console to the radiographic image acquisition device by the non-encrypted communication.

[14] The radiation image acquisition system according to any one of claims 1 to 13, wherein an encryption method to be used can be selected from a plurality of encryption methods.

[15] Radiation image acquisition means for obtaining radiation image data by radiography, encryption processing means for obtaining data encrypted from image data based on the radiation image data acquired by the radiation image acquisition means, A communication unit that obtains a data signal from data based on the data encrypted by the encryption processing unit and transmits the data signal by wireless communication.

[16] It has a compression processing means for obtaining compressed data from image data based on the radiation image data acquired by the radiation image acquisition means,

16. The force set according to claim 15, wherein the encryption processing means obtains data subjected to encryption processing from data based on the data compressed by the compression processing means.

[17] Console communication means for receiving data signals and obtaining encrypted data; Decryption processing means for decrypting data based on the encrypted data obtained by the console communication means; A console having image storage means for storing image data based on the radiation image data obtained by the decoding processing means.

[18] It has decompression processing means for obtaining decompressed data from data based on the data obtained by the decryption processing means, 18. The console according to claim 17, wherein the image storage means stores image data based on the radiation image data obtained by the decompression processing means.

[19] An encryption processing unit for obtaining encrypted data from image data based on radiation image data, and wireless communication by obtaining a data signal from the data based on the data encrypted by the encryption processing unit A force set including a communication unit that transmits the data, a console communication unit that receives a data signal transmitted from the radiographic image transmission apparatus and obtains encrypted data, and the encryption obtained by the console communication unit A radiological image receiving apparatus comprising: decoding processing means for decoding data based on the processed data; and image storage means for storing image data based on the radiation image data obtained by the decoding processing means;

A radiographic image communication system comprising:

[20] The force set has compression processing means for obtaining compressed data from the image data based on the radiation image data, and the encryption processing means converts the data compressed by the compression processing means into data compressed by the compression processing means. To obtain encrypted data from the data based on

The radiation image receiving device has a decompression processing means for obtaining decompressed data from data based on the data obtained by the decoding processing means, and the image storage means is the radiation obtained by the decompression processing means. 20. The radiographic image communication system according to claim 19, which stores image data based on image data.

[21] The radiographic image acquired by the radiological image acquisition means on a computer mounted on a force set having radiographic image acquisition means for obtaining radiographic image data by radiography and communication means for transmitting a data signal by wireless communication An encryption processing function for obtaining encrypted data from image data based on the data, and a data power based on the data encrypted by the encryption processing function. A program that realizes a communication function that transmits data by wireless communication.

[22] A compression processing function for obtaining compressed data from image data based on the radiation image data acquired by the radiation image acquisition means,

The encryption processing function is based on data compressed by the compression processing function The program according to claim 21, wherein the encrypted data is obtained from the data.

[23] A computer mounted on a console having console communication means for receiving data signals and obtaining encrypted data and image storage means for storing image data, the console communication means obtained by the console communication means A decryption processing function for decrypting data based on the encrypted data and an image storage function for storing image data based on radiation image data obtained by the decryption processing means in the image storage means are realized. Program to make.

[24] having a decompression processing function for obtaining decompressed data from data based on the data obtained by the decryption processing function;

24. The program according to claim 23, wherein the image storage function causes the image storage unit to store image data based on the radiation image data obtained by the decompression processing function.