JP2022095181A - Radiographic imaging system, radiographic imaging device, and method of controlling radiographic imaging system - Google Patents

Abstract

To provide a radiographic imaging system which allows for switching a radiography room or radiography vehicle to be used by moving a radiographic imaging device and communicating with a wireless device with a wireless identifier, and which is free from the problem that the radiographic imaging device may be associated with unintended radiography vehicle if the radiography vehicle passes near a radiography room being used.SOLUTION: A radiographic imaging device is provided with a communication authority switching unit for setting whether to enable wireless communication or not, and the wireless communication takes place according to the setting.SELECTED DRAWING: Figure 3

Description

The present invention relates to a radiography system, a radiography apparatus, and a control method for the radiography system.

The digitization of radiography equipment has made it possible to check images immediately after radiography, and the workflow has been greatly improved compared to conventional imaging methods using film and CR equipment. In recent years, more wireless radiographic imaging devices have been developed.

When moving such a wireless radiological imaging device and changing the imaging environment, it is necessary to associate it with an appropriate wireless device. In Patent Document 1, a general-purpose identifier for communicating using an RFID (Radio Frequency Identification, registered trademark) at the entrance of a radiofrequency identification room is notified to a radiofrequency identification device, and a radiofrequency identification for notifying a dedicated identifier for connection is notified. The system is disclosed.

Japanese Unexamined Patent Publication No. 2013-236711

However, in the method of Patent Document 1, when another movable imaging system such as a round-trip car exists in the vicinity, the radiography apparatus may be associated with an unintended wireless device of the imaging system. An object of the present invention is to provide a system that can be easily and surely related to a radio device of a radiography system intended as a radiography device.

The above-mentioned problem is to communicate the radiographic image from the radiographing device to the information processing device by a second wireless communication, the radiographing device for capturing the radiographic image, the information processing device for processing the radiographic image, and the radiographic image from the radiographing device. A radiography system comprising an access point for the purpose and a communication device for communicating the communication setting information of the access point to the radiography device by the first wireless communication, wherein the radiography device is the first. A first wireless communication unit that receives the communication setting information from the communication device by one wireless communication, and a second wireless communication unit that transmits the radiation image to the information processing device by the second wireless communication. Based on the setting unit and the setting unit that sets whether or not to allow the first wireless communication unit to receive the communication setting information from the communication device by the first wireless communication, the first one. It is solved by a radiography system characterized by having a communication control unit that controls a wireless communication unit of the above.

By making it possible to switch the permission setting for whether or not the radiography device communicates, when switching between the radiography room to be used and the round-trip car, a simple and reliable relationship with the wireless device of the intended radiography system can be established. It will be possible.

An example of the configuration of the radiography system according to the first embodiment Outline of main part configuration of the radiography apparatus according to the first embodiment A flowchart showing the operation of the radiography apparatus according to the first embodiment. Operation explanatory diagram at the time of determination of connection destination in 1st Embodiment Operation explanatory diagram at the time of determination of connection destination in 2nd Embodiment Operation explanatory diagram at the time of determination of connection destination in 3rd Embodiment

(First Embodiment)
The first embodiment of the present invention will be described in detail with reference to FIGS. 1 to 4.

First, the configuration of the radiological imaging system 100 according to the present embodiment will be described with reference to FIG. 1. The radiography imaging system 100 includes a radiography imaging device 101, an information processing device 102, an access point 103, a communication device 104, a synchronization control device 105, and a radiation generator 106.

The radiation photographing apparatus 101 is an apparatus for photographing a radiation image based on the radiation 107 transmitted through the subject H. The radiological imaging device 101 is composed of, for example, a portable radiographic imaging device.

The information processing apparatus 102 displays the radiographic image captured by the radiographic imaging apparatus 101 on the display unit, and instructs the imaging conditions input via the operation unit.

The access point 103 is a radio wave repeater that wirelessly communicates between a radiographic imaging device 101 and a terminal such as an information processing device 102.

The communication device 104 is a radio wave transmitter / receiver for performing short-range communication wireless communication between a terminal such as a radiographic imaging device 101 and an information processing device 102. For example, the communication device 104 is a dongle connected to the information processing device 102 by a USB (Universal Serial Bus) interface.

Alternatively, the communication device 104 is a device corresponding to at least one of the Bluetooth (registered trademark) BR / EDR (Basic Rate / Enhanced Data Rate) or LE (Low Energy) standard. Alternatively, the communication device 104 is an RFID device that exchanges information from a tag in which ID information is embedded by short-distance wireless communication using an electromagnetic field, radio waves, or the like. The RFID communication method may be an electromagnetic induction method or a radio wave method.

The synchronous control device 105 has a circuit that mediates communication, and monitors the state of the radiography apparatus 101 and the radiation generator 106. For example, the synchronous control device 105 controls the irradiation of the radiation 107 from the radiation generator 106, the photographing of the subject H by the radiation photographing apparatus 101, and the like. It may have a built-in HUB or the like for connecting a plurality of network devices.

The radiation generator 106 is configured to include, for example, a radiation tube that accelerates electrons at a high voltage and collides with an anode in order to generate radiation 107 such as X-rays.

The radiation 107 is typically X-rays, but may be α-rays, β-rays, or γ-rays.

The in-hospital LAN 108 is a local area network constructed in the hospital. In the radiography system 100 shown in FIG. 1, the radiation 107 emitted from the radiation generator 106 irradiates the subject H, which is a patient. The radiography apparatus 101 detects the radiation 107 transmitted through the subject H and generates a radiation image.

Here, the radiation imaging system 100 can perform imaging by synchronous imaging and asynchronous imaging. Synchronous imaging is imaging in which the timing of radiation irradiation and imaging are matched by exchanging an electrical synchronization signal or the like between each radiation imaging device 101 and the radiation generator 106. In asynchronous radiography, each radiological imaging device 101 detects the incident of radiation and starts imaging without exchanging an electrical synchronization signal or the like between each radiographic imaging device 101 and the radiation generator 106. Is.

In the asynchronous imaging, when the radiation 107 is irradiated from the radiation generator 106 without providing the synchronous control device 105, the radiation imaging device 101 automatically accumulates an image signal (charge) and generates a radiation image (the radiation image is generated). Details will be described later). In the present embodiment, it is also possible to apply the radiological imaging system 100 in the automatic detection mode without the synchronous control device 105. In asynchronous radiography, the radiographing apparatus 101 may transfer a radiographic image for each imaging, or may store the captured image in the radiographic imaging apparatus without transferring the captured image for each imaging.

Further, the radiography imaging system 100 performs imaging under the imaging conditions generally photographed by the radiography imaging unit, such as fluoroscopy, continuous imaging, still image imaging, DSA imaging, roadmap imaging, program imaging, tomography imaging, and tomosynthesis imaging. obtain. In each shooting condition, information related to shooting such as a shooting frame rate, a tube voltage, a tube current, a sensor reading area, a sensor drive binning setting, and a collimator aperture setting is specified.

In addition, the imaging conditions may include the conditions of the automatic voltage control setting ADC (Outo Dose Control) and the automatic exposure control setting AEC (Auto Exposure Control). Further, the width of the radiation window and the setting of whether or not to store the radiation image in the radiation photographing apparatus 101 may be included.

For example, in the case of fluoroscopy, the radiation generator 106 generates pulsed radiation and performs imaging while performing synchronous imaging. Further, the radiography imaging system 100 can set a sensor reading area, a sensor drive binning setting, and the like as needed.

Further, for example, in tomosynthesis in which a desired tomographic image is obtained from the obtained projected image, the radiation generator 106 is moved to irradiate the subject H with radiation from different angles to perform imaging. The radiographing apparatus 101 stores the radiographic image taken for each radiography, and transmits the radiographic image to the information processing apparatus 102 at the timing of each radiography, after the end of the radiography, etc., so that the radiographic image can be efficiently photographed.

FIG. 2 is a diagram showing an example of a schematic configuration of a main part of the radiography apparatus 101 according to the present invention.

The power button 11 is an operation unit (including a device having the function, a circuit, a circuit described by a program, and the like) for starting / stopping power supply to each component of the radiography apparatus 101. The user prepares for shooting by operating this power button. Although the power button 11 is provided on the side surface of the radiography apparatus 101, it may be installed on any surface other than the radiation incident direction.

The battery unit 4 is a power source built in and used in the radiography apparatus 101 to supply a predetermined voltage to each component of the radiography apparatus 101. For the battery unit 4, for example, a lithium ion battery or an electric double layer capacitor is used.

The external power supply 5 is a power supply for supplying a predetermined voltage from the outside of the radiographic imaging device 101 to each component of the radiographic imaging device 101.

The power control circuit unit 3 controls the power supply to each component unit and monitors the remaining battery level by connecting to the battery unit 4 and the external power source 5 according to the operation status of the power button 11. For example, the power supply control circuit unit 3 transforms the voltage from the battery unit 4 or the like into a predetermined voltage and supplies it to each component unit. For example, the power supply control circuit unit 3 controls to switch the power supply from the battery unit 4 on and off by operating the power button 11.

The radiation detection unit 20 detects the radiation 107 transmitted through the subject H as an image signal (charge). The radiation detection unit 20 has a photoelectric conversion element and a phosphor, and the photoelectric conversion element converts light converted from radiation by the phosphor into an electric signal (charge) and stores the light.

The drive circuit 17 is an IC that gives a drive signal to the radiation detection unit 20, and is a circuit that causes the radiation detection unit 20 to perform operations such as storing and reading an electric signal (charge). Specifically, when the pixel 200 in a certain row is selected by the drive signal by the drive circuit 17, the switch element 202 of the pixel 200 in a certain row is sequentially turned on. Then, the electric signal (charge) stored in the photoelectric conversion element 201 of the pixel 200 in a certain row is output to the signal line connected to each pixel 200.

The read circuit 16 is an IC that amplifies the electric signal (charge) output to the signal line, and sequentially reads the electric signal from the radiation detection unit 20. The ADC 7 converts an electrical signal, which is an analog signal read by the read circuit 16, into a digital signal, and outputs this as a radiographic image to the control unit 14. That is, the ADC 7 constitutes an A / D conversion unit that converts the electrical signal of the analog signal read by the read circuit 16 into digital data.

The storage unit 15 stores a radiographic image and an identifier output from the ADC 7, a calculated distance threshold between the radiographing apparatus 101 and the Bluetooth device, and an offset image. In addition, the engineer ID, which is the identification information of the engineer corresponding to the generated radiation image, the patient ID, which is the identification information of the patient, the imaging time, the imaging dose, the imaging site, the imaging conditions including the number of images, and the transfer history of the radiation image data. Etc. may be linked and stored in the storage unit 15.

The storage unit 15 is a device capable of reading and writing, and corresponds to, for example, a non-volatile memory such as a flash memory. However, the present invention is not limited to this, and a volatile storage device such as SDRAM may be used. Further, a plurality of storage units 15 may be provided in the radiography apparatus 101. Further, the storage unit 15 may be made removable so that it can be removed from the radiological imaging device 101 and attached to the information processing device 102 or the like.

In the first wireless communication unit 2, a wireless communication module is set according to the medium used for communication with the information processing device 102 and the synchronization control device 105. The first wireless communication unit 2 may also hold information on the data rate, the amount of packet loss per unit time, the round trip time RTT, the packet buffer occupancy rate, the reception strength RSSI in wireless communication, and the S / N ratio. It is possible. Further, the first wireless communication unit 2 can also set the transmission power of the radio wave by the control unit 14.

For example, the first wireless communication unit 2 communicates with the communication device 104 by a wireless PAN (Personal Area Network). Through this communication, it is possible to send and receive the identifier of the access point 103 possessed by the radiography system 100, the SSID (Service Set Editor) set in the second wireless communication unit 6, the encryption key, and the like. Information necessary for communication between devices such as SSID and encryption key is referred to as communication setting information in the following description of the present embodiment.

In the second wireless communication unit 6, a wireless communication module is set according to the medium used for communication with the information processing device 102 and the synchronization control device 105. The second wireless communication unit 6 holds information on the data rate, the amount of packet loss per unit time, the round trip time RTT, and the occupancy rate of the packet buffer. It is also possible to have information on RSSI and S / N ratio. Further, the second wireless communication unit 6 can also set the transmission power of the radio wave by the control unit 14.

For example, the second wireless communication unit 6 can communicate with the access point 103 via a wireless LAN (Local Area Network) and transmit a radiographic image to the information processing device 102.

The operation unit 12 has a function of switching the relationship between the radiography imaging device 101 and the radiography imaging system 100 by the operation of the user. It is also possible to set permission settings for sending and receiving communication setting information, which will be described later. The operation unit 12 is preferably provided on the side surface of the radiation photographing apparatus 101, but the installation location does not matter as long as it is a surface other than the radiation incident direction.

The communication permission switching unit 10 is a setting unit for setting permission as to whether or not to allow communication for switching the relationship between the radiography apparatus 101 and the radiography system 100 without the user operating the operation unit 12. be. The content of the permission setting is notified to the communication control unit 8, and if the setting is such that communication is permitted, the first wireless communication unit 2 transmits / receives communication setting information to / from the communication device 104.

The permission setting can be set for each radiography apparatus 101 used in the round-trip car, the gantry, the fluoroscopy table, and the like. The time for setting the permission setting may be set, for example, as the initial setting of the radiography imaging device 101, or may be set by operating the user interface of the operation unit 12. It is also possible to store it as non-volatile data in the storage unit 15. It is desirable that the permission setting is not permitted during shooting. “During shooting” refers to a state in which a voltage is applied to at least one of the drive circuit 17, the read circuit 16, and the radiation detection unit 20, for example.

The motion detection unit 9 detects the shooting preparation operation performed by the user and notifies the communication control unit 8. For example, when the operation unit 12 switches the relationship between the radiography imaging device 101 and the radiography imaging system 100, or when the power button 11 activates the radiography imaging device 101, the operation is detected.

Even if the permission setting in the communication permission switching unit 10 does not allow transmission / reception of communication setting information, communication control is performed so that transmission / reception of communication setting information is permitted when the operation detection unit 9 detects a shooting preparation operation. The department 8 is notified. After the notification, the first wireless communication unit 2 transmits / receives communication setting information to / from the communication device 104.

When the communication control unit 8 is set to allow the first wireless communication unit 2 to perform wireless communication by the communication permission switching unit 10, the communication control unit 8 is set to acquire RSSI in communication with the communication device 104. Controls one wireless communication unit 2. Then, when the identifier of the access point 103 possessed by the radiography system 100 acquired from the communication device 104 matches the identifier stored in the storage unit 15, the acquired RSSI exceeds the threshold value stored in the storage unit 15 in advance. Sometimes it initiates a connection.

The threshold value stored in the storage unit 15 may be a threshold value defined for the distance between the communication device 104 and the first wireless communication unit 2. In that case, the acquired RSSI is converted into a distance, and when both are closer than the distance threshold value. Start the connection. When acquiring RSSI, it is preferable to acquire an arbitrary number and suppress the influence of multipath or radio interference by arithmetic mean or the like.

For example, the communication device 104 transmits an advertisement packet to be broadcast including information such as an identifier indicating that the information processing device 102 operates the radiography apparatus 101 and an address of the device. The first wireless communication unit 2 receives the advertisement packet, and the communication control unit 8 determines whether or not it matches the identifier stored in advance or the address of the device. Further, the communication control unit 8 can acquire the RSSI of the received advertisement packet and start the connection when the RSSI exceeds the RSSI stored in the storage unit 15 in advance.

After the connection, the communication control unit 8 communicates the identifier of the access point 103 of the radiography system 100, the SSID and the encryption key related to the second wireless communication unit 6, as communication setting information, so that the first wireless communication unit 8 communicates. 2 is controlled. If there is a difference between the newly acquired communication setting information and the set communication setting information, the newly acquired communication setting information is used as the access point 103 for the second wireless communication unit 6. Control to communicate.

Further, the newly acquired communication setting information may be stored in the storage unit 15. When communication is performed using the acquired communication setting information, a display may be displayed on the radiographing apparatus. The identifier may be information in the advertisement packet before connection or the response (SCAN_RSP) packet when the active scan request (SCAN_RET) is performed.

The drive control unit 21 controls the drive of the radiography apparatus 101. The drive control unit 21 has, for example, a shooting drive for shooting, a standby drive for suppressing power consumption of the radiation detector during standby when shooting is not performed, and an offset image which is an image in a state where no radiation is applied. Offset image acquisition drive for acquisition is performed.

The drive control unit 21 changes the drive according to the acquired identifier. For example, when the identifier indicates a round-trip vehicle, it is desirable that the radiography apparatus is controlled as a standby drive because it is often powered by a battery. On the other hand, when the identifier indicates a system such as a fluoroscope that performs fluoroscopy or continuous imaging, it is often supplied with power from the outside (power supply device, etc.), and is driven by offset image acquisition from the viewpoint of warmth and image quality of the radiography apparatus. It is desirable to control to do. By optimally driving and preparing the system, the user's preparation operation and work time can be reduced.

Further, the drive control unit 21 drives as follows at the time of shooting. The drive control unit 21 periodically reads out the electric charge while applying the same voltage as at the time of imaging to the drive circuit 17, the read circuit 16, and the radiation detection unit 20 as a drive to prepare for the state in which radiography can be taken. To reset the dark charge accumulated in each pixel. The electric charge read out at this time is not treated as image data and may not be stored in the storage unit 15.

According to the instruction of the drive control unit 21, the radiation photographing apparatus 101 irradiates radiation during the accumulation of each pixel while driving to prepare for the state in which the radiation photographing is possible. The image data is read out and stored in the storage unit 15 as a radiographic image. Further, by continuously performing the above-mentioned control by the radiography photographing apparatus 101, it is possible to take a picture as a moving image. The offset image acquisition drive is also driven in the same manner, and the image data read out without irradiating radiation is stored in the storage unit 15 as an offset image.

When performing the standby drive, the drive control unit 21 drives or stops the drive so as to suppress the power consumption in the radiation detection unit 20. For example, the drive circuit 17 controls the voltage difference between the ON voltage and the OFF voltage for controlling the TFT of each pixel on the drive line 211 so as to be smaller than that at the time of driving the imaging.

Since normal image data cannot be read during standby drive, it is necessary to switch to shooting drive once when it is desired to acquire image data. Since a voltage different from that at the time of shooting is applied to the radiation detection unit 20 during the standby drive, the potential of the pixel 200 is not stable immediately after switching to the shooting drive, and the image quality deteriorates. Therefore, after switching to the shooting drive, it is necessary to wait for the pixel 200 to stabilize for, for example, about 2 to 3 seconds before acquiring the image.

The radiation image acquired from the radiation detection unit 20 during imaging is subjected to offset correction processing by image processing using the offset image previously acquired at the time of non-imaging. After that, it is transferred to the information processing apparatus 102 through the second wireless communication unit 6.

Although only the offset correction processing is described here, correction processing such as correction of defective pixels and gain correction for correcting gain variation of the amplifier in the radiation detection unit may be performed. Further, these correction processes are not limited to the implementation in the radiography imaging device 101. For example, the acquired radiographic image and offset image are transferred to the information processing device 102 without correction, and the correction process is performed in the control device. You may. Further, as the offset image used for the offset correction processing, for example, an offset image acquired from a plurality of images may be used, and an image obtained by performing noise component reduction processing or the like by averaging or the like may be used.

FIG. 3 is a flowchart illustrating a control method of the radiography apparatus 101 in the present invention. Hereinafter, the flowchart of FIG. 3 will be described.

In step S301, the setting of the communication permission switching unit 10 is confirmed. If the communication permission switching unit 10 is set to allow communication by the first wireless communication unit 2, the process proceeds to step S303. On the other hand, if the communication permission switching unit 10 is set not to allow communication by the first wireless communication unit 2, the process proceeds to step S302. Here, "communication is not permitted" may be a state in which radio waves are not physically transmitted or received, or a state in which communication by the corresponding protocol is not performed in terms of software.

In step S302, when the operation detection unit 9 detects the system switching setting operation by the operation unit 12, the operation of activating the radiography apparatus 101 by the power button 11, and the like, and detects the preparatory operation. , The process proceeds to step S303. If no preparatory operation is detected, the process proceeds to step S301.

In step S303, the communication control unit 8 controls the first wireless communication unit 2 to start communication, and proceeds to step S304.

In step S304, the communication control unit 8 receives an advertisement packet from an external device such as a communication device 104 via the first wireless communication unit 2. If the identifier included in the received advertisement packet matches the identifier stored in the storage unit 15 in advance, the process proceeds to step S305. If the identifiers do not match, the process proceeds to step S303.

In step S305, the communication control unit 8 acquires RSSI in the wireless communication between the first wireless communication unit 2 and the communication device 104, and determines whether or not the threshold value previously stored in the storage unit 15 is exceeded. That is, it is determined whether or not the communication device 104 is within a predetermined distance starting from the first wireless communication unit 2. If the RSSI exceeds the threshold value, the process proceeds to step S306. If the RSSI does not exceed the threshold value, the process proceeds to step S303.

In step S306, the communication control unit 8 controls to start the connection between the first wireless communication unit 2 and the communication device 104, and proceeds to step S307.

When the connection between the first wireless communication unit 2 and the communication device 104 is completed in step S307, the process proceeds to step S308. If the connection is not completed for some reason such as the communication environment, the process proceeds to step S303.

In step S308, the communication control unit 8 starts data communication using GATT (Generic Attribute Profile) that defines a method of data structuring and a method of exchanging data between applications. For example, the first wireless communication unit 2 is set to behave as a client, and the communication device 104 is set to behave as a server. As soon as the data communication is started, the process proceeds to step S309.

In step S309, when the communication control unit 8 completes the communication in accordance with an appropriate protocol (for example, necessary information can be received in the agreed order), the communication control unit 8 receives the SSID and the encryption key which are the communication setting information. , S310. If the communication cannot be completed for some reason such as the communication environment, the process proceeds to S303.

In accordance with GATT, communication can be performed by a service representing an arbitrary function and a characteristic indicating an arbitrary attribute. The UUID (Universally Unique Identifier), which is an identifier for uniquely identifying a service, may be defined in advance by the radiographing apparatus 101 and the information processing apparatus 102, or may be configured to negotiate during communication. ..

Further, the communication setting information may include a wireless channel, an IP address of the radiography apparatus 101, a master / slave unit setting, an encryption method, an IP address of a synchronization control device, and the like, if necessary. Further, the communication control unit 8 may not communicate the identifier in step S304, but may communicate here.

In step S310, the communication control unit 8 compares the newly set communication setting information with the communication setting information that has already been set, and if there is a difference, the process proceeds to step S311. If there is no difference, the process proceeds to step S313.

In step S311, the communication control unit 8 controls the second wireless communication unit 6 to communicate with the newly set communication setting information, and proceeds to step S312.

In step S312, the communication control unit 8 stores the newly set communication setting information in the storage unit 15, and proceeds to step S313.

In step S313, the drive control unit 21 changes the drive according to the identifier included in the communication setting information. For example, when the identifier indicates a power saving system such as a round-trip car, the radiography apparatus is often powered by a battery, so that it is driven by standby. Therefore, the process proceeds to step S314. On the other hand, when the identifier indicates a system such as a fluoroscopy table that performs fluoroscopy or continuous shooting and is relatively unrequired for power saving, the process proceeds to step S315.

In step S314, the drive control unit 21 performs standby drive.

In step S315, the drive control unit 21 drives to acquire an offset image.

FIG. 4 is an operation explanatory diagram at the time of determining the connection destination in the first embodiment of the present invention. An operation example between the radiography apparatus 101 and the information processing apparatus 102 is shown by using a broadcaster (advertiser) for broadcasting data as a radiography apparatus 101 and an observer (scanner) for monitoring data as an information processing apparatus 102.

In step S401, the communication device 104 acts as an advertiser that broadcasts the advertisement packet, and transmits information including an identifier to the first wireless communication unit 2. At this time, the transmission power and the packet transmission cycle can be set in advance. The first wireless communication unit 2 behaves as a scanner in a state where it can receive advertising packets. Then, when the communication control unit 8 that has received the advertising packet via the first wireless communication unit 2 recognizes that the other party should be connected from the identifier or the device address, it enters the initiation state, which is the connection start state, and proceeds to step 402. Transition.

In step S402, the communication control unit 8 makes a connection request to the communication device 104 via the first wireless communication unit 2, and proceeds to step S403.

In step S403, a connection is established between the first wireless communication unit 2 and the communication device 104. Furthermore, pairing, which is the sharing of encryption keys, and mutual service searches may be performed. Then, the process proceeds to step S404.

In step S404, the communication device 104 transmits the SSID of the access point 103 to the first wireless communication unit 2. For example, the SSID is a character string "X", and it is preferable to encrypt it from the viewpoint of security. Then, the process proceeds to step S405.

In step S405, the communication device 104 transmits the encryption key (Key) of the access point 103. For example, Key is a character string "x", and it is preferable to encrypt it from the viewpoint of security. Then, the process proceeds to step S406.

In step S406, the communication between the communication device 104 and the first wireless communication unit 2 is disconnected. Then, the process proceeds to step S407.

In step S407, the communication control unit 8 controls the second wireless communication unit 6 to be connected to the access point 103 by using the SSID and Key acquired in S404 and S405. The access point 103 authenticates with the acquired SSID and Key, and carries out communication.

(Second embodiment)
A second embodiment of the present invention will be described in detail with reference to FIG. The description of the parts that overlap with the first embodiment will be omitted.

FIG. 5 is an operation explanatory diagram at the time of determining the connection destination in the second embodiment of the present invention. An operation example between the radiography apparatus 101 and the information processing apparatus 102 is shown, wherein the observer (scanner) for monitoring the data is the radiography apparatus 101 and the broadcaster (advertiser) for broadcasting the data is the information processing apparatus 102.

In step S501, the first wireless communication unit 2 acts as an advertiser that broadcasts the advertisement packet, and transmits information including the device address to the communication device 104. At this time, the transmission power and the packet transmission cycle can be set in advance. The communication device 104 behaves as a scanner in a state where it can receive advertising packets. Then, the communication device 104 that has received the advertising packet recognizes the other party to be connected from the device address. Then, the process proceeds to step S502.

In step S502, when the communication device 104 performs SCAN_RET when the information is insufficient only with the data of the advertising packet, the process proceeds to step S503.

In step S503, when the first wireless communication unit 2 receives the SCAN_RET, the first wireless communication unit 2 performs the SCAN_RSP to the communication device 104. The communication device 104 receives SCAN_RSP and enters the initiation state, which is the connection start state. Then, the process proceeds to step S504.

Steps S504 to S509 are the same as steps S403 to S408 in the first embodiment, respectively.

The access point 103 may be a slave unit and the second wireless communication unit 6 may be a master unit to perform the above processing. Further, S509 may be performed for the first wireless communication unit.

(Third embodiment)
A third embodiment of the present invention will be described in detail with reference to FIG.

FIG. 6 is an operation explanatory diagram at the time of determining the connection destination in the third embodiment of the present invention. An operation example between the radiography apparatus 101 and the information processing apparatus 102 when the RF tag is the first wireless communication unit 2 and the RFID reader / writer is the communication device 104 as a system using RFID is shown.

In step S601, the communication device 104, which is an RFID reader / writer, supplies power by a carrier wave to the first wireless communication unit 2 which is an RF tag, and also transmits a polling command including an identifier, and proceeds to step S602. At this time, the transmission power and the packet transmission cycle can be set in advance.

In step S602, the first wireless communication unit 2 is activated by the electric power supplied from the communication device 104, and transmits a response signal according to the received communication command to the communication device 104. When the communication control unit 8 recognizes that the other party should be connected from the identifier or the device address, the process proceeds to step S603.

In step S603, the communication device 104 transmits the SSID of the access point 103 to the first wireless communication unit 2. For example, the SSID is a character string "X", and it is preferable to encrypt it from the viewpoint of security. Then, the process proceeds to step S604.

In step S604, the communication device 104 transmits the encryption key (Key) of the access point 103 to the first wireless communication unit 2. For example, Key is a character string "x", and it is preferable to encrypt it from the viewpoint of security. Then, the process proceeds to step S605.

In step S605, the communication control unit 8 controls to connect the second wireless communication unit 6 to the access point 103 by using the SSID and Key acquired in S603 and S604. The access point 103 authenticates with the acquired SSID and Key, and carries out communication.

(Other embodiments)
The present invention can also be realized by supplying a program that realizes the above-mentioned functions to a system or a device via a network or a storage medium, and reading and executing the program by one or more processors in the computer of the system or the device. be.

Further, as the recording medium, various recording media such as a flexible disk, an optical disk (for example, CD-ROM, DVD-ROM), a magneto-optical disk, a magnetic tape, a non-volatile memory (for example, a USB memory), and a ROM can be used. .. Further, a program that implements the above-mentioned functions may be downloaded via a network and executed by a computer.

Further, the function of the above-described embodiment is not limited to the realization by executing the program code read by the computer. It is also included that the OS (operating system) or the like running on the computer performs a part or all of the actual processing based on the instruction of the program code, and the function of the above-described embodiment is realized by the processing. ..

Further, the program code read from the recording medium may be written in the memory provided in the function expansion board inserted in the computer or the function expansion unit connected to the computer. It is also included that the CPU provided in the function expansion board or the function expansion unit performs a part or all of the actual processing based on the instruction of the program code, and the above-mentioned function is realized by the processing.

The above is an example of a typical embodiment of the present invention, but the present invention is not limited to the embodiments shown in the above and the drawings, and can be appropriately modified and implemented without changing the gist thereof. ..

8 Communication control unit 9 Operation detection unit 10 Communication permission switching unit 100 Radiation imaging system 101 Radiation imaging device 102 Information processing device 103 Access point 104 Communication device 106 Radiation generator

Claims (12)

Radiation imaging equipment that captures radiological images and
An information processing device that processes the radiographic image and
An access point for communicating the radiographic image from the radiographing device to the information processing device by a second wireless communication, and
A communication device for communicating the communication setting information of the access point to the radiographing apparatus by the first wireless communication, and
It is a radiography system that has
The radiography apparatus is
The first wireless communication unit that receives the communication setting information from the communication device by the first wireless communication, and
A second wireless communication unit that transmits the radiation image to the information processing device by the second wireless communication, and
A setting unit for setting whether or not to allow reception of the communication setting information from the communication device by the first wireless communication is performed on the first wireless communication unit.
A radiography imaging system comprising a communication control unit that controls the first wireless communication unit based on the setting. The communication control unit is characterized in that it controls the first wireless communication unit so as to start the first wireless communication when the setting is a setting that allows reception of the communication setting information. The radiography system according to claim 1. The radiological imaging device further includes an motion detection unit that detects a user's imaging preparation operation.
The communication control unit is changed to a setting that permits reception of the communication setting information when the shooting preparation operation is detected when the setting is a setting that does not allow reception of the communication setting information. The radiography system according to claim 1 or 2, wherein the radiography system is characterized by the above. The communication control unit determines whether or not the second wireless communication unit is to perform the second wireless communication based on the distance to the communication device acquired by the first wireless communication. The radiography system according to any one of claims 1 to 3, wherein the radiography system is characterized. The radiography apparatus further has a storage unit for storing a predetermined threshold distance with respect to the distance.
The radiography system according to claim 4, wherein the communication control unit causes the second radio communication unit to perform the second radio communication when the distance is closer than the threshold distance. The radiography system according to claim 4 or 5, wherein the distance is calculated based on the reception intensity in the first wireless communication. When the communication setting information received by the first wireless communication is different from the communication setting information already set in the radiography apparatus, the communication control unit receives the communication setting information by the first wireless communication. The radiography system according to any one of claims 1 to 6, wherein the second wireless communication unit is made to perform the second wireless communication by using the communication setting information. The radiographic apparatus further includes a drive control unit that controls the drive of the radiological imaging apparatus.
The drive control unit is a drive for performing the radiography in the radiography apparatus, a drive for suppressing the power consumption of the radiation detector included in the radiography apparatus, and a state in which the radiation in the radiography apparatus is not irradiated. The drive for acquiring the image of the above, according to any one of claims 1 to 7, wherein the drive of the radiographing apparatus is controlled by selecting from a plurality of drives including at least the drive for acquiring the image of the radiography. The radiological imaging system described. It is a radiological imaging device that captures radiological images.
The communication setting information of the access point of the radiography system for transmitting the radiographic image from the radiography device to the information processing device for processing the radiographic image of the radiography system by the second wireless communication is the first. The first wireless communication unit that receives from the communication device of the radiography system by one wireless communication,
A second wireless communication unit that transmits the radiation image to the information processing device by the second wireless communication, and
A setting unit that sets whether or not to allow the first wireless communication unit to receive the communication setting information from the communication device by the first wireless communication.
A radiography apparatus comprising: a communication control unit that controls the first wireless communication unit based on the setting. An radiographing device that captures a radiographic image, an information processing device that processes the radiographic image, and an access point for communicating the radiographic image from the radiographic image device to the information processing device by a second wireless communication. , A communication device for communicating the communication setting information of the access point to the radiographic apparatus by the first wireless communication,
Is a control method for radiological imaging systems that have
By the first wireless communication unit based on the setting of whether or not to allow the first wireless communication unit of the radiography apparatus to receive the communication setting information from the communication device by the first wireless communication. The step of receiving the communication setting information from the communication device by the first wireless communication, and
A second radio communication unit included in the radiographing apparatus performs a step of transmitting the radiographic image to the information processing apparatus by the second wireless communication using the communication setting information. How to control the system. A program for causing a computer to execute each step of the control method of the radiography system according to claim 10. A computer-readable recording medium on which the program according to claim 11 is recorded.

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