JP2021090664A - Radiographic apparatus, radiographic system, method for controlling radiographic apparatus and program - Google Patents

Abstract

To efficiently recover a communication state in unplugging and plugging a wired cable of a radiographic apparatus.SOLUTION: A radiographic apparatus includes: a radiation detection part having multiple pixels; a communication unit including a wired communication unit and a wireless communication unit for communicating with an external device; a storage unit for storing imaging information including communication information; and a control unit that, when detecting that wired communication is cut off due to that a wired cable comes off during communication control on the wired communication unit and if the elapsed time after the wired communication is cut off exceeds a first threshold, performs control of switching between the wired communication and a wireless communication in accordance with the communication information included in the imaging information.SELECTED DRAWING: Figure 2

Description

The present invention relates to a radiographic apparatus, a radiological imaging system, a control method and a program of the radiological imaging apparatus.

As a radiation imaging device used for medical image diagnosis by radiation such as X-rays, a radiography apparatus having a pixel array in which a switch such as a TFT (thin film transistor) and a conversion element such as a photoelectric conversion element are combined is known. The image data acquired by the radiography device can be used for optical fiber communication using an optical module, wired communication such as Ethernet (registered trademark), or external communication such as a control device or image processing device for the radiography device by the communication unit of wireless communication. Transferred to the device.

Patent Document 1 describes a radiography system in which communication parameters are set by wirelessly or wiredly connecting a radiography apparatus and a console.

Patent Document 2 states that high-speed video recording is possible by wired communication when a wired cable is connected, and still image shooting and video recording at a lower speed than when a wired cable is connected are possible by wireless communication when the wired cable is disconnected. The radiography device to be used is described.

Japanese Unexamined Patent Publication No. 2014-198148 Japanese Unexamined Patent Publication No. 2010-051594

For example, in the radiography apparatus shown in Patent Document 2, the wired cable can be easily attached and detached, and when the wired cable is disconnected, the wireless connection is switched to improve the usability. The wired cable may come off unintentionally. In this case, the radiography device switches the communication to the wireless connection, so that even if the wired cable is reconnected immediately after the wired communication is disconnected due to an unintended disconnection of the wired cable, the switched wireless connection operation is stopped. And switch to wired communication again. When switching the communication method, it takes time to return to the wired communication state, and shooting may be delayed.

In view of the above problems, it is an object of the present invention to efficiently switch and restore the communication state when inserting and removing the wired cable of the radiography apparatus.

The radiography apparatus according to one aspect of the present invention for achieving the above object has the following configuration. That is, it is a radiography apparatus, and is a storage unit that stores a radiation detection unit having a plurality of pixels, a communication unit including a wired communication unit that communicates with an external device, a wireless communication unit, and imaging information including communication information. When the wired cable is disconnected during the communication control between the unit and the wired communication unit and the disconnection of the wired communication is detected, the elapsed time after the disconnection of the wired communication is determined according to the communication information included in the next shooting information. It is characterized by having a control unit that controls switching between wired communication and wireless communication when the first threshold value is exceeded.

As described above, according to the present invention, it is possible to efficiently switch and restore the communication state when inserting and removing the wired cable of the radiography apparatus.

The figure which shows an example of the schematic structure of the radiography system which concerns on 1st Embodiment. The figure which shows an example of the schematic structure of the radiography system which concerns on 1st Embodiment. The figure which shows an example of the internal structure of the radiation detection part which concerns on 1st Embodiment. The flowchart which shows an example of the processing procedure in the control method when the wire communication of the radiography apparatus which concerns on 1st Embodiment is disconnected. The sequence diagram which shows an example of the wireless setting method by the wired communication of the radiography system which concerns on 1st Embodiment, and the switching process of a wired connection and a wireless connection. The figure which shows an example of the communication state display of the radiography system which concerns on 1st Embodiment. The figure which shows an example of the notification part which concerns on 1st Embodiment. The figure which shows an example of the shooting screen which concerns on 1st Embodiment. FIG. 5 is a flowchart showing an example of a processing procedure in a control method when a wired cable is connected during wireless communication of the radiography apparatus according to the second embodiment. FIG. 5 is a flowchart showing an example of a processing procedure in a control method when a wired cable is connected during wireless communication of the radiography apparatus according to the third embodiment.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In the following embodiments, the term radiation may include, for example, α-rays, β-rays, γ-ray particle beams, cosmic rays, etc., in addition to X-rays. In addition, the following embodiments can be combined as appropriate, and embodiments in which the embodiments are appropriately combined are also included in the embodiments of the present invention.

(First Embodiment)
FIG. 1 is a diagram showing a configuration of a radiography system of the present invention. The radiography system controls the radiography imaging devices 101 and 103, the radiation generator 112 that generates radiation, and the radiography imaging devices 101 and 103 and the radiation generator 112 to perform radiography control and system control. It has a device 130.

The radiation generator 112 is movably installed with respect to the ceiling 150. This radiography system is a ceiling traveling system. The radiation generator 112 can move three-dimensionally up, down, left, and right with respect to the ceiling 150. The gantry 102 is fixedly installed with respect to the floor surface 151. The gantry 102 is a support pedestal for standing shooting. The bed 104 is fixedly installed with respect to the floor surface 151. The bed 104 is a support base for lying down photography. A radiographic imaging device 101 and a radiographic imaging device 103 are installed on the gantry 102 and the bed 104, respectively. The radiographic imaging device 101 and the radiographic imaging device 103 may be installed interchangeably. The radiographic apparatus 101 may be installed on the bed 104, and the radiological imaging apparatus 103 may be installed on the gantry 102. The radiographic imaging apparatus 101 and the radiographic imaging apparatus 103 can be mounted on the upper surface of the bed 104 or hand-held for imaging as portable imaging. In portable shooting, it is possible to shoot by either wired or wireless communication method.

The system control device 130 displays an input device 132 (for example, a mouse, a keyboard, a touch panel, etc.) for inputting an instruction by an operator, a display for displaying control menu information, a radiation image after photographing, and the like. It has a device 131. The system control device 130 outputs an image to the display device 131 and provides a graphical user interface using the display device 131 while controlling the operation of the radiography apparatus 101. Although the system control device 130, the display device 131, and the input device 132 have shown an example in which they are separately separated, they may be mobile information device terminals such as a notebook PC and a tablet. Further, although the system control device 130, the display device 131, and the input device 132 are installed in the operation room 152 outside the photographing room, they can also be brought into the photographing room 153.

Then, the system control device 130 communicates with the radiographic imaging device 101 and the radiographic imaging device 103 to control radiographic imaging. Further, the system control device 130 communicates with the radiation control device 113 and controls the radiation generator 112 to irradiate radiation. In this embodiment, a mode in which the number of radiographic apparatus is two will be described, but the number of radiographic apparatus is not limited to two, and may be one or three or more.

The irradiation control device 120 functions as an interface device connected to the radiographing devices 101 and 103, the system control device 130, and the radiation control device 113. Further, the irradiation control device 120 is connected to the system control device 130 by Ethernet (registered trademark) or the like, and also functions as a relay device when transferring the image data acquired by the radiographing devices 101 and 103 to the system control device 130. To do. The wireless access point (AP) 116 is connected to the irradiation control device 120 and is used for wireless communication with the radiographing devices 101 and 103. The AP 116 can be configured as an integral part of the irradiation control device 120. Further, the irradiation control device 120 can be configured as an integral type with the system control device 130.

The radiation control device 113 controls the radiation 114 (not shown) generated from the radiation generator 112. The radiation control device 113 may be connected to, for example, a switch such as an exposure button or a fluoroscopic pedal that requires radiography, or an operation unit that sets radiation irradiation conditions.

The radiographic imaging device 101 and the radiographic imaging device 103 change their states to a radiographic imaging state (READY state) under the control of the system control device 130, and perform radiographic imaging while synchronizing with the system control device 130.

Further, the system control device 130 can also set the imaging conditions of the radiation generator 112 and irradiate the radiation from the radiation generator 112 based on the set imaging conditions.

Next, how to proceed with the inspection of the radiography system will be described. First, the operator is informed of the inspection order via the system control device 130. The inspection order is displayed on the display device 131 connected to the system control device 130. The inspection order is taken into the system control device 130, and the subject information and the shooting contents are specified. When the inspection order reaches the operator, the subject is generally waiting for photography in the operation room 152 outside the photographing room. The operator calls the subject into the imaging room 153 according to the inspection order and prepares for the inspection. When the subject is called into the photographing room 153, the name is confirmed and the date of birth is confirmed in order to prevent the subject from being mistaken. At this time, the operator confirms the name of the subject who received the inspection order as the subject information on the display (not shown) in the photographing room 153, or on the operator's mobile terminal device (not shown). Or something. When the preparation for imaging is completed, the operator adjusts the positions of the radiation generator 112, the subject, and the radiographing devices 101 and 103 according to an inspection order such as imaging in a lying position or imaging in a standing position. Depending on the condition of the subject and the content of the inspection order, the order of shooting may be changed, the standing position and the lying position may be exchanged, and the operator may change the shooting method as necessary. After that, the operator moves from the imaging room 153 to the operation room 152 where the system control device 130 is located, and if it is determined that radiation imaging is possible, the operator irradiates radiation and photographs a radiation image. Normally, the radiographic image taken is displayed on the display device 131 of the operation room 152, so if the radiographic image is confirmed and there is no problem, the operator moves to the radiography room 153 to perform the positioning of the next radiography. .. If there is no next shooting, the inspection will be completed, so the subject will be asked to leave the shooting room 153.

FIG. 2 is a block diagram showing a configuration example of a radiation imaging system.

The radiography apparatus 101 is configured to enable wired communication with an irradiation control device 120, which is an external device, by a wired cable. The housing of the radiography apparatus 101 has an external connection terminal (not shown), and a connection terminal 225 of a wired cable is connected to the housing. Further, the radiography apparatus 101 is configured to enable wireless communication with the irradiation control apparatus 120, which is an external device, via the AP116. As shown in FIG. 2, the radiography apparatus 101 includes a radiation detection unit 201, an imaging control unit 202, a storage unit 203, a wireless communication unit 204, a wired communication unit 205, a power supply control unit 206, a battery 207, and a communication switching control unit. It is configured to have 208 and a clock 211.

The radiation detection unit 201 detects the radiation emitted from the radiation generator 112 (including the radiation transmitted through the subject 115) and acquires the image data of the subject 115. At this time, the radiation detection unit 201 can acquire image data of still images and moving images as image data. Further, as the radiation detection unit 201, for example, it is preferable to use a flat panel detector.

The imaging control unit 202 performs various controls related to radiography of the radiography apparatus 101. The imaging control unit 202 controls the drive control of the radiation detection unit 201, the control of acquiring radiation image data from the radiation detection unit 201, the storage of the acquired image data, and the transfer to an external device. Further, the photographing control unit 202 controls the storage of image data for the storage unit 203, controls the transfer of image data to the irradiation control device 120 via the communication switching control unit 208, the wireless communication unit 204, and the wired communication unit 205, and the like. Also do. Further, the imaging control unit 202 sets the drive timing and drive conditions of the radiation detection unit 201 as the drive control of the radiation detection unit 201. The communication switching control unit 208 switches communication units (wireless communication unit 204, wired communication unit 205) used for communication with an external device, and controls communication data. The clock 211 uses a real-time clock (RTC), a counter, or the like as a reference for the control timing of the photographing control unit 202, and synchronizes with the clock 223 of the irradiation control device described later. In addition, some or all of the functions of the image processing unit 210 of the radiography apparatus 101 can be possessed by the irradiation control device 120 and the system control device 130, which will be described later, depending on the required system configuration.

The storage unit 203 stores a program for controlling the operation of the radiography apparatus 101, various information necessary for the control, and various data. In addition, the storage unit 203 includes shooting information (shooting conditions, shooting protocols such as shooting techniques and parts, communication information including wired communication and wireless communication, etc.) corresponding to the inspection received from the system control device 130, and shooting control unit 202. Stores various information and various data obtained by the processing of. For example, the storage unit 203 stores the image data obtained by the shooting control unit 202 and the corrected image data based on the control of the shooting control unit 202. Further, the power consumption of the communication unit (wireless communication unit 204, wired communication unit 205) used at the time of acquiring the image data and the image correction data is stored.

The wireless communication unit 204 performs wireless communication with the irradiation control device 120 via the AP 116, for example, by wireless LAN. Further, the wired communication unit 205 performs wired communication with the irradiation control device 120 by wire (cable). The photographing control unit 202 uses either or both of the wireless communication unit 204 and the wired communication unit 205 to communicate with the irradiation control device 120, for example, command communication, X-ray synchronization control communication, image data communication, and the like. I do. Further, the photographing control unit 202 grasps whether or not the wired cable is connected and the communication is established, and determines whether or not the wired communication is connected or disconnected from the irradiation control device 120. In the wired communication between the radiography apparatus 101 and the irradiation control device 120, for example, wired communication by Ethernet (registered trademark) or the like can be performed. Further, in the wireless communication between the radiographic imaging device 101 and the irradiation control device 120 in FIG. 2, wireless communication via AP116 is shown, but the radiographic imaging device 101 or the irradiation control device 120 serves as an access point for direct wireless communication. You may go. Further, for wireless communication, it is possible to use communication technology such as Wi-Fi or Bluetooth (registered trademark). The radiography apparatus 101 and the system control apparatus 130 establish wireless communication with a connection destination preset as a connection destination to each other.

The power supply control unit 206 controls the power supply that supplies power to each component of the radiation imaging device 101 such as the radiation detection unit 201 and the imaging control unit 202 based on the control of the imaging control unit 202. The battery 207 is a power source provided inside the radiography apparatus 101. For example, when the wired communication is not disconnected (when the wired communication is established (connected)), the power supply control unit 206 uses the power supply 222 of the irradiation control device 120, which is an external device, to use the radiation imaging device 101. Power is supplied to each component of the above, and control is performed to operate each component. Further, when the wired communication is disconnected, the power supply control unit 206 uses the battery 207 provided inside the radiography apparatus 101 to supply power to each component of the radiography apparatus 101, and each of the components is supplied with power. Controls the operation of the components. In the present embodiment, the battery 207 is provided inside the radiography apparatus 101, but may be configured as a battery that can be attached to and detached from the radiography apparatus 101, for example. Further, the battery 207 of the present embodiment can be charged by receiving a power supply from the outside, for example, a secondary battery such as a lithium ion battery or a nickel hydrogen battery, a lithium ion capacitor, an electric double layer capacitor or the like. It is also possible to use the power storage device of.

The radiation generator 112 is a device that generates radiation such as X-rays. The radiation generator 112 is composed of, for example, an electron gun and a rotor. In this case, the electrons generate radiation by colliding with the rotor while being accelerated by the high voltage generated by the radiation control device 113.

The system control device 130 is a device that comprehensively controls the operation of the radiography system 100. The system control device 130 performs various controls such as control of the operation of the radiography system 100, acquisition and setting of a radiography protocol, data processing of a radiogram image taken by the radiography camera 101, and the like. The system control device 130 has an application function that operates on a computer. That is, the system control device 130 has one or more processors and a memory, and the processors execute a program stored in the memory to realize each functional unit described below. However, some or all of each functional unit may be realized by dedicated hardware. As the system control device 130, for example, various computers and workstations can be preferably used.

The irradiation control device 120 functions as an interface device connected to the radiography apparatus 101, the system control apparatus 130, and the radiation control apparatus 113. Further, the irradiation control device 120 is connected to the system control device 130 by Ethernet (registered trademark) or the like, and also functions as a relay device when transferring the image data acquired by the radiography apparatus 101 to the system control device 130. The irradiation control device 120 generates an irradiation pulse that issues an irradiation request to the wired communication unit 221 that performs wired communication with the radiation imaging device 101, the power supply 222 that enables power supply to the radiation imaging device 101, the clock 223, and the radiation control device 113. It is configured to have a portion 224. The irradiation control device 120 uses a clock 223 synchronized with the clock 211 of the radiation imaging device 101 to perform control and the like for synchronizing the image acquisition timing of the radiation imaging device 101 with the radiation irradiation timing of the radiation control device 113. ..

Next, the internal configuration of the radiation detection unit 201 shown in FIG. 2 will be described with reference to FIG.

FIG. 3 is a diagram showing an example of the internal configuration of the radiation detection unit 201 shown in FIG. As shown in FIG. 3, the radiation detection unit 201 includes a drive circuit 301, a sensor array 302, a sample hold circuit 303, a multiplexer 304, an amplifier 305, and an A / D converter 306.

The drive circuit 301 drives a plurality of pixels 307 provided in the sensor array 302 based on the control of the photographing control unit 202.

The sensor array 302 includes a plurality of pixels 307. Specifically, the sensor array 302 is arranged in a two-dimensional array in which a plurality of pixels 307 form a plurality of rows and a plurality of columns.

One pixel 307 includes a conversion element 309 that converts incident radiation into a signal charge (electric signal), and a switch element 308 such as a TFT that transfers the electric signal to the outside.

In the present embodiment, the conversion element 309 includes a scintillator (fluorescent body) that converts incident radiation into light such as visible light, and a photoelectric conversion element that converts the light converted by the scintillator into a signal charge. Has been done. The present invention is not limited to this form, and it is also possible to use a so-called direct conversion type conversion element that directly converts the incident radiation into a signal without providing a scintillator as the conversion element 309. Is.

By switching ON and OFF of the switch element 308 via the drive line 311 by the drive circuit 301, the charge of the conversion element 309 is accumulated and the charge is read out, and as a result, a radiation image can be acquired. Specifically, when the ON voltage of the switch element 308 is applied to the predetermined drive line 311 by the drive circuit 301, the switch element 308 of each pixel 307 of the row connected to the predetermined drive line 311 is turned ON. become. Then, the electric charge of the conversion element 309 is held in the sample hold circuit 303 via each signal line 310. After that, the signal charges held in the sample hold circuit 303 are sequentially read out via the multiplexer 304, amplified by the amplifier 305, and then converted into digital radiographic image data by the A / D converter 306. Further, each pixel 307 in the row in which the charge reading is completed returns to the state of charge accumulation by applying the OFF voltage of the switch element 308 to the predetermined drive line 311 by the drive circuit 301.

In this way, the drive circuit 301 sequentially drives and scans the pixels 307 in each row of the sensor array 302, and finally the signal charges of all the pixels 307 are converted into digital values. As a result, the image data can be read out. Then, control such as driving and reading operation of these radiation detection units 201 is performed by the imaging control unit 202 shown in FIG.

Further, the imaging control unit 202 sets the operating state of the radiation detection unit 201 from the imaging information set from the system control device 130 and the connection state of the wired cable, and controls to drive the radiation detection unit 201. Further, when the imaging control unit 202 receives the imaging request signal from the irradiation control device 120, the imaging control unit 202 can perform the imaging operation of the moving image and the still image while synchronizing with the irradiation control device 120. Then, the shooting control unit 202 performs necessary image processing on the image data acquired by the shooting operation, and then stores the image data in the storage unit 203, and is an external device based on the communication information and the connection state of the wired cable. Transfer control to is performed. Specifically, the image data is transferred from the radiography apparatus 101 to the system control apparatus 130 via the irradiation control apparatus 120.

Further, each pixel 307 of the sensor array 302 has different characteristics. The main characteristic variation is the variation of offset (dark current) and gain (conversion efficiency). Therefore, the image data is subjected to offset correction, gain correction, and defect pixel correction, and the image processing is performed by an external device such as a radiography apparatus 101 or an irradiation control device 120 or a system control device 130.

FIG. 4 is a flowchart showing an example of a processing procedure in the control method when the wired communication with the irradiation control device 120 is disconnected in the radiography apparatus 101 according to the first embodiment of the present invention.

In step S401, the radiography apparatus 101 is connected to the irradiation control device 120 by wire (cable) via the connection terminal 225, and operates by supplying power from the power supply 222 of the irradiation control device 120. The setting of communication information between each device has been completed, communication control is being performed by each wired communication unit, and wired communication is being performed between each device.

Subsequently, in step S402, the photographing control unit 202 determines whether or not the wired communication is continuing. As a result of the determination in step S402, if the disconnection of the wired communication is not detected, the wired communication is continued. When the imaging control unit 202 detects that the connection terminal 225 (wired cable) is disconnected from the radiographing apparatus 101 and the wired communication is disconnected, the process proceeds to S403. The imaging control unit 202 switches the power supply method of the radiography imaging device 101 from the external power supply using the power supply 222 of the irradiation control device 120 to the power supply using the battery 207 of the radiography imaging device 101 via the power supply control unit 206. Perform processing. While the power supply to the battery 207 is being switched, the operation of the radiography apparatus 101 is maintained by a power holding unit (for example, a capacitor) (not shown). Further, since the wired communication is disconnected, the photographing control unit 202 measures the elapsed time T after the disconnection measured by using the clock 211.

Subsequently, in step S403, the imaging control unit 202 determines whether or not the next imaging is imaging using wired communication. The "next shooting" corresponds to the acquisition of radiation image data by irradiation of radiation to be performed in the future. As a result of the determination in step S403, in the case of shooting the wired communication, the wireless communication connection is waited for and the wired communication is continued. On the other hand, in the case of wireless communication shooting, the process proceeds to step S407.

Subsequently, in step S404, the photographing control unit 202 confirms the wired connection. If a wired connection is detected, the process proceeds to step S405. On the other hand, if the wired connection is not detected, the process proceeds to step S406.

When a wired connection is detected in step S405, the wired communication control is restored by the setting information used at the time of disconnection of the wired communication without resetting by acquiring the setting information for establishing the communication. When the processing is completed, the processing of the flowchart is completed. In this case, since the request or notification of new setting information for communication is not performed, the control by the wired communication can be restored in a short time.

In step S406, it repeats the elapsed time T, the comparison between the switching waiting time T _A is a preset threshold. Photographing control unit 202, while not exceeding the elapsed time T is switched waiting time T _A from the time of wired cutting attempts to reconnect wired connection is not performed switching to the wireless communication. When it is determined at step S406, if the elapsed time T exceeds the switching wait time _{T A,} the process proceeds to step S407.

In step S407, the photographing control unit 202 ends the wired communication control, and when the process is completed, proceeds to step S408.

If the wireless communication is connected and the wireless communication is established in step S408, the process proceeds to step S409.

In step S409, shooting control communication and wireless communication such as image data are enabled from the wireless communication unit 204 to the AP116, and the processing of the flowchart is completed.

Because if the set time of the switching wait time T _A is short, even reconnect the wire cable immediately, switching operation of the wireless communication is started, it is difficult to return to the wired communication until completion, wired communication It will be delayed until you return to. If the setting time of switching the waiting time T _A is long, if you really want to use a wireless communication, (total time of switching the waiting time T _A and the switching time of the wireless communication) of communication stop time becomes longer, lowering the usability there's a possibility that. Therefore, switching the standby time T _A, for example it is preferably set between 10 seconds or less than 1 second. Further, it is more preferable to set it between 1 second and 3 seconds or less.

FIG. 5 is a diagram showing a wireless setting method by wired communication and a processing sequence of switching between a wired connection and a wireless connection.

First, the operator connects the radiography apparatus 101 to the system control apparatus 130 to be connected with a cable capable of Ethernet (registered trademark) communication (S501). The cable is connected to, for example, the radiography apparatus 101 by using the connection terminal 225, and is connected to the system control device 130 by a dedicated cable having an RJ45 connector. In the present embodiment, the radiation imaging device 101 and the system control device 130 are connected by wire via the irradiation control device 120 as a repeater, but the system control device 130 is provided with the function of the irradiation control device 120. The irradiation control device 120 may be omitted. In any form, it does not matter as long as Ethernet (registered trademark) communication is possible between the radiography apparatus 101 and the system control apparatus 130. Then, by connecting the wired cable, the radiography apparatus 101 and the system control apparatus 130 are in a state where Ethernet (registered trademark) communication is possible.

A DHCP server is operating in the system control device 130, and an IP address is assigned to the radiography apparatus (S502).

Next, the radiography apparatus 101 outputs a connection confirmation request signal to the system control apparatus 130 (S503). According to this connection confirmation, the communication control unit (not shown) of the system control device 130 transmits an ACK command (response signal) indicating the connection confirmation result to the radiography apparatus 101 (S504). It is also possible to proceed from step S502 to step S505, which will be described later, without performing the processes of steps S503 to S504.

Next, the imaging control unit 202 of the radiographic imaging device 101 transmits the individual identification number (identification information) of the radiographic imaging device 101 to the system control device 130 (S505).

The system control device 130 generates setting information necessary for constructing the system. The information includes the IP address assigned to the radiography device according to the individual identification number of the radiography device, the SSID (Service Set Agent) and PSK (Pre-Shared Key) for connecting to the AP, and the IP address of the irradiation control device. There is. Then, the system control device 130 transmits the generated information to the radiography imaging device 101 (S506).

The radiography control unit 202 of the radiography imaging device 101 performs wired and wireless connection settings in which the radiographic setting and the IP address specified by the system control device 130 are reflected in the radiography imaging device 101 (S507). The wireless setting here includes not only the setting for communication with the access point but also the setting information of the information necessary for constructing the radiography system. For example, the individual identification number (identification information) of the radiography apparatus 101, the network address of the radiography apparatus 101, the network address of the irradiation control device, and the like are included. The process from step S502 to step S507 including setting information for wireless communication and wired communication and notification and setting of an IP address is a process for establishing communication. Communication is established when the setting is completed, and imaging information, image data, and the like can be transmitted and received between the radiography imaging device 101 and the system control device 130 (S508). In the case of wired communication, as shown in FIG. 6A, the system control device 130 causes the display device 131 to display that the communication method is wired (S509). During the wired communication, the imaging control unit 202 of the radiography imaging device 101 can turn off or reduce the power supply to the wireless communication unit 204 via the communication switching control unit 208 to reduce the power consumption. ..

Next, the operator removes the wired cable connecting the radiography apparatus 101 and the system control apparatus 130 (S510). The radiation imaging apparatus 101 and the system controller 130 repeats a period of waiting time _{T A} switches the wired connection state detection (S511). Then, the imaging control unit 202 of the radiation imaging apparatus 101 supplies via the communication switching control unit 208, the power for communication to the wireless communication unit 204 during the switching wait time T _A from the battery 207. When a disconnection of the wired connection is detected, whether the next shooting method is shooting by wired communication or shooting using wireless communication is controlled by the radiography apparatus 101 and the system based on the communication information of the shooting information. Device 130 confirms. In the case of shooting using wireless communication, the wireless connection is set immediately afterwards (S514). The measurement of the standby time T ends. On the other hand, when the next shooting method is shooting performed by wired communication, the wired connection status detection is continued. In step S514, the wireless connection is set immediately after that, but a predetermined threshold value can be set and a switching standby time can be provided. However, for convenience, the switching latency to the wireless communication sets a shorter threshold than the switching wait time T _A, for example, it is preferably less than 1 second or more 0 seconds. Further, even when a wired cable is connected during wireless communication, it is preferable that the time is 0 seconds or more and less than 1 second, as in the standby time for switching to wireless communication.

In addition, the period of switching waiting time _{T A,} as shown in FIG. 6 (b), the system control unit 130 displays that the communication method in the display device 131 is being switched (S512). The display during switching can be, for example, blinking of an icon, change of color, non-display, etc., as shown in FIGS. 6 (b) to 6 (d). Therefore, it can be seen that the operator is waiting for the switching of the communication method.

If it detects a connection wire cable during the switching wait time T _A, without resetting the acquisition of new configuration information for the communications, the setting information used when cutting the wire communication, wired Resume communication. The imaging control unit 202 of the radiography imaging device 101 turns off or reduces the power supply to the wireless communication unit 204 again via the communication switching control unit 208.

After switching waiting time _{T A,} as shown in FIG. 6 (e), the system control unit 130 displays that it has cut the wired communication to the display device 131 (S513). Then, the imaging control unit 202 of the radiographic imaging device 101 wirelessly connects to the AP 116 according to the set wireless setting (S514), and wirelessly communicates with the display device 131 as shown in FIG. 6 (f) according to the instruction of the system control device 130. Display (S515). A communication connection for performing imaging control between the radiography imaging device 101 and the system control device 130 is established, and imaging control communication (S516) is performed. The contents of the imaging control communication include the driving timing and driving conditions of the radiation detection unit 201 for imaging described above. The radiography control unit 202 of the radiography apparatus 101 wirelessly transmits the image data (radiation image data) acquired by the radiography control to the system control apparatus 130 (S516).

In FIG. 5, after a period of switching waiting time T _A, an example has been shown to be wirelessly connected to the AP116, when the wireless setting is completed in step S507, the may be wirelessly connected to the AP116. When wireless communication becomes possible, simultaneous communication between wireless communication and wired communication may be enabled. When wireless communication and wired communication can be communicated at the same time, the wired connection is preferentially used because the radiographic image data is large in size. When the wire cable is disconnected in the case of simultaneous communication, instead of switching in real wireless communication only in control, after a period of switching waiting time T _A, switch to the control of transmitting the radiation image data by wireless communication.

Out wired cable, after the expiration of the period of switching waiting time T _A, the wired communication unit 205 detects the wired connection state continues, other functions to reduce the quiescent or power supply, wire cable It is possible to realize the correspondence of the connection and the low power consumption.

Here, as an example of notifying the communication state, FIGS. 7 and 8 will be described.

FIG. 7 shows an example of the GUI of the display device 131. On the display window 701, an image display unit 702 that displays an image acquired from an X-ray imaging apparatus or a database, and a patient information display unit 703 that displays patient information that displays patient information corresponding to the examination being displayed. Is provided. Further, the display window 701 is provided with a shooting information display unit 704 that displays an inspection number, shooting information, and the like. In the example of FIG. 7, the shooting information of the inspection number 000001 including the three shooting information of the shooting A705, the shooting B706, and the shooting C707 is acquired, and the shooting information display unit 704 displays the shooting A705, the shooting B706, and the shooting to be performed in the inspection. C707 is shown. Shooting A705, shooting B706, and shooting C707 are also referred to as shooting protocols.

When a desired imaging is selected from the imaging information display unit 704 and the exposure button of the corresponding radiation control device 113 is pressed, the selected imaging is executed. A shooting execution button may be provided on the screen of FIG. 7, and a pressing instruction (for example, a click) may be made to execute shooting by the selected shooting unit. Alternatively, a shooting execution permission button may be provided on the screen of FIG. 7, and when this is instructed to be pressed, shooting by the exposure button of the corresponding shooting unit may be permitted. The system control device 130 can determine that the imaging information has been “captured” by detecting that the image data captured by the radiography imaging device 101 has been transferred. Further, when the shooting condition change button 708 is pressed during the inspection, a change screen (not shown) for the selected shooting is displayed. The inspection ends when the end button 709 is pressed by the operator. The communication state in each shooting is indicated by the icon 710. FIG. 7 shows that the shooting of the shooting A705 is being performed, and when the shooting of the shooting A705 is completed and the shooting is shifted to the shooting of the shooting B706, when the switching to the wireless communication is completed, the background color of the icon 710 of the shooting B706 is completed. Changes, indicating that the operator is in a wireless communication state. Further, the system control device 130 can use a speaker as a notification unit for notifying the communication status by voice.

FIG. 8 is a perspective view of the radiography apparatus 101, in which the notification unit 801 is arranged in the housing. As the notification unit 801, a display device for displaying the wired or wireless communication status with an icon or the like as described above, or a speaker for notifying the communication status by voice is used. The change of the display can be controlled in the same manner as the system control device 130.

By doing so, it is possible to efficiently switch and restore the communication state when inserting and removing the wired cable based on the communication information of the next shooting information.

(Second embodiment)
Next, a second embodiment according to the present invention will be described.

The configuration of the radiography system is the same as that of the first embodiment. FIG. 9 is a flowchart showing an example of a processing procedure in the control method when the wired communication with the irradiation control device 120 is disconnected.

Since steps S901 to S202 and S904 to S909 in FIG. 9 are the same as steps S401 to S402 and S404 to S409 in FIG. 4 in the first embodiment, their description will be omitted.

In step S903, the next shooting setting is determined. If the next shooting is a shooting using wired communication, the process proceeds to step S904. On the other hand, if there is no shooting or shooting information using wireless communication, the process proceeds to step S907.

In the present embodiment, in step S903, if there is no shooting information for the next shooting, the process proceeds to step S907, but the flow proceeds to step S904.

By doing so, it is possible to efficiently switch and restore the communication state when inserting and removing the wired cable based on the communication information of the next shooting information.

(Third Embodiment)
Next, a third embodiment according to the present invention will be described.

The configuration of the radiography system is the same as in the first and second embodiments. FIG. 10 is a flowchart showing an example of a processing procedure in the control method when the wired communication with the irradiation control device 120 is disconnected.

Since steps S1001 to S1002 and S1005 to S1010 in FIG. 10 are the same as steps S401 to S402 and S404 to S409 in FIG. 4 in the first embodiment, their description will be omitted. Further, since step S1004 in FIG. 10 is the same as step S903 in FIG. 9 in the second embodiment, the description thereof will be omitted.

In step S1003, it is determined whether or not to determine the next shooting setting. If it is determined, the process proceeds to step S1004. On the other hand, if no determination is made, the process proceeds to step S1008.

The operator displays the setting screen on the display device 131 (not shown), and selects whether or not to determine the next shooting setting on the setting screen. Step S1003 is processed based on the operator's choice.

In this way, usability can be improved, and the communication state can be efficiently switched and restored when the wired cable is inserted and removed based on the communication information of the next shooting information.

<Other Embodiments>
The present invention supplies a program that realizes one or more functions of the above-described embodiment to a system or device via a network or storage medium, and one or more processors in the computer of the system or device reads and executes the program. It can also be realized by the processing to be performed. It can also be realized by a circuit (for example, ASIC) that realizes one or more functions.

101 Radiation imaging device 120 Irradiation control device 130 System control device 201 Radiation detection unit 202 Imaging control unit 204 Wireless communication unit 205 Wired communication unit 206 Power supply control unit 207 Battery 225 Connection terminal

Claims (15)

A radiation detector with multiple pixels and
A communication unit including a wired communication unit and a wireless communication unit that communicate with an external device,
A storage unit that stores shooting information including communication information,
When the wired cable is disconnected during the communication control of the wired communication unit and the disconnection of the wired communication is detected, the elapsed time after the disconnection of the wired communication is the first according to the communication information included in the next shooting information. A control unit that controls switching between wired communication and wireless communication when the threshold is exceeded,
A radiography apparatus characterized by having. When the control unit detects the disconnection of the wired communication, the communication information included in the next shooting information is wireless communication, and when the second threshold value shorter than the first threshold value is exceeded, wireless communication is performed. The radiography apparatus according to claim 1, wherein the switching control to is performed. If the control unit detects the disconnection of the wired communication, if there is no next shooting information, or if there is no communication information included in the next shooting information, the second threshold value is shorter than the first threshold value. The radiography apparatus according to claim 1 or 2, wherein switching control to wireless communication is performed when a threshold value is exceeded. A claim characterized in that the control unit controls whether or not to perform switching control between the wired communication and the wireless communication according to the communication information included in the next shooting information according to the input setting. Item 3. The radiographing apparatus according to any one of Items 1 to 3. When the control unit detects the connection of the wired cable by the time the first threshold value is exceeded, the wired communication of the communication unit is continued according to the setting information of the communication unit when the wired cable is disconnected. The radiographing apparatus according to any one of claims 1 to 4, wherein the radiographing apparatus is characterized. Any of claims 1 to 5, wherein when the control unit detects the connection of the wired cable by the time the first threshold value is exceeded, the control unit does not request or notify new setting information. The radiography apparatus according to item 1. It has a notification unit that notifies the communication status.
The radiography apparatus according to any one of claims 1 to 6, wherein the notification unit notifies the standby of the switching control between the wired communication and the wireless communication. When the control unit reduces the power supply of the wireless communication unit during communication control of the wired communication unit and detects a disconnection of the wired cable, it supplies power for communication of the wireless communication unit. The radiographing apparatus according to any one of claims 1 to 7, wherein the radiography apparatus is used. The radiography apparatus according to any one of claims 1 to 8, wherein the first threshold value is 1 second or more and 10 seconds or less. The radiography apparatus according to any one of claims 1 to 9, wherein the first switching standby time is 1 second or more and 3 seconds or less. The radiography apparatus according to any one of claims 2 to 10, wherein the second threshold value is 0 seconds or more and less than 1 second. A system control device that communicates with the radiography device,
The radiography apparatus according to any one of claims 1 to 11.
A radiography system characterized by being equipped with. The system control device has a notification unit for notifying a communication status, and has a notification unit.
The radiography system according to claim 12, wherein the notification unit of the system control device notifies the standby of the switching control between the wired communication and the wireless communication. A radiation detector with multiple pixels and
A communication unit including a wired communication unit and a wireless communication unit that communicate with an external device,
A control unit that controls the communication unit and
It is a control method of a radiography apparatus including a storage unit for storing imaging information including communication information.
When the wired cable is disconnected during the communication control of the wired communication unit and the disconnection of the wired communication is detected, the elapsed time after the disconnection of the wired communication is the first according to the communication information included in the next shooting information. The process of switching between wired communication and wireless communication when the threshold is exceeded, and
A method for controlling a radiography apparatus, which comprises. A program for causing a computer to execute each step of the control method of the radiography apparatus according to claim 14.

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