CONTROL DEVICE, RADIATION IMAGING DEVICE, AND RADIATION IMAGING SYSTEM

Abstract

To select an antenna capable of executing stable wireless communication out of a plurality of antennas provided in a radiation imaging device.SOLUTION: There is provided a control device for controlling a radiation imaging device for transmitting a radiation image obtained by radiography by wireless communication using at least one antenna of a plurality of antennas. The control device selects at least one antenna out of the plurality of antennas as an antenna used for the wireless communication with the radiation imaging device using information on a place where the radiation imaging device is used, determined beforehand, and transmits information on the antenna to be used to the radiation imaging device.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a control device, a radiation imaging device, and a radiation imaging system. [Background technology]

[0002] In recent years, radiation imaging devices using flat panel detectors configured with solid-state imaging elements made of amorphous silicon or single crystal silicon arranged in a two-dimensional array have been widely used as imaging devices used in medical image diagnosis and non-destructive testing using radiation.

[0003] Such a radiation imaging device can acquire an image by accumulating a signal charge generated for each pixel according to the amount of detected radiation, reading out the charge, and converting it into an analog-to-digital signal. Such a radiation imaging device is used, for example, as a medical digital imaging device.

[0004] In recent years, radiography devices capable of capturing still images like general radiography and video like fluoroscopy have been developed for image diagnosis, and by transmitting images from the radiography device via wireless communication, the portability of the radiography device has been improved and it is now possible to perform imaging in a variety of locations, rather than being limited to imaging rooms.

[0005] Patent Document 1 discloses a method for selecting an optimal antenna based on RSSI (received signal strength indicator) when implementing multi-input multi-output (MIMO) communication using multiple antennas. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2018-164161 A Summary of the Invention [Problem to be solved by the invention]

[0007] However, when dynamically switching antennas used for wireless communication as in Patent Document 1, for example, if there is a fluctuation in the RSSI value, there is a possibility that a suboptimal antenna will be selected. In that case, downtime occurs until an antenna is selected again and switched to the optimal antenna, which may reduce usability.

[0008] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a radiation imaging device that is capable of selecting an antenna capable of performing stable wireless communication from a plurality of antennas provided in the radiation imaging device. [Means for solving the problem]

[0009] The above problem is solved by providing a control device that includes a plurality of antennas for connecting to a network using wireless communication and is capable of communicating with a radiation imaging device used for radiation imaging at a location where the control device is used, Used Within The control device is located at a position away from the radiation imaging device and is capable of communicating with the radiation imaging device. Used Within The problem is solved by a control device which provides the radiation imaging device with specified information corresponding to the wireless communication environment in the radiation imaging device, and the specified information is used in the radiation imaging device when setting an antenna to be used for the wireless communication from among the multiple antennas. Effect of the Invention

[0010] According to at least one embodiment of the present invention, it is possible to provide a radiation imaging apparatus capable of performing stable wireless communication by determining the selection of an antenna to be used depending on the environment in which the radiation imaging apparatus is used, etc. [Brief description of the drawings]

[0011] [Figure 1] 1 is a schematic diagram showing a radiation imaging system according to a first embodiment. [Diagram 2]1 is a functional block diagram of a radiation imaging apparatus according to a first embodiment. [Diagram 3] FIG. 2 is a diagram illustrating an example of an arrangement of antennas according to the first embodiment. [Figure 4] 3A and 3B are diagrams illustrating an example of the arrangement of an antenna and a bucky housing according to the first embodiment. [Diagram 5] FIG. 11 is a sequence diagram showing an example of communication between a radiation imaging apparatus and a control apparatus according to the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] First Embodiment Hereinafter, radiation imaging systems according to the respective embodiments will be described with reference to the drawings. Fig. 1 is a diagram showing a radiation imaging system according to a first embodiment.

[0013] As shown in FIG. 1, a radiation imaging system 10 is provided in a radiation room 1 where radiation imaging is performed by irradiating radiation, and a control room 2 installed in the vicinity of the radiation room 1.

[0014] The radiation room 1 is provided with a radiation imaging device 300, an access point 320, a communication control device 323, a radiation generator 324, and a radiation source 325 as the radiation imaging system 10. The radiation room 1 is further provided with a communication device 322, an AP communication cable 326, a radiation generator communication cable 327, and a sensor communication cable 328. Note that, although the communication device 322 is depicted as being placed inside the radiation room 1 in FIG. 1, this is not limiting and it may be placed outside the radiation room 1.

[0015] In the control room 2, a control device 310, a radiation irradiation switch 311, a display device 313, an input device 314, an in-hospital LAN 315, and a radiation room communication cable 316 are provided as the radiation imaging system 10.

[0016] The radiation imaging device 300 includes a power supply control unit 301 formed of a battery or the like, a short-distance wireless communication unit 302, a registration switch 303, a wireless communication unit 304, and a wired communication unit 306. The radiation imaging device 300 detects radiation that has passed through a subject 307, and generates radiation image data.

[0017] The access point 320 is an access point that performs wireless communication, and is used by the radiation imaging apparatus 300 and the control apparatus 310 to communicate with each other via a communication control apparatus 323. The communication between the radiation imaging apparatus 300 and the communication control apparatus 323 can also be wired communication using a sensor communication cable 328. In this embodiment, as an example, the access point 320 communicates using a wireless LAN in the 2.4 GHz band, the 5 GHz band, or the 60 GHz band.

[0018] The radiation generating device 324 controls the radiation source 325 to irradiate the subject 307 with radiation. The radiation generating device 324 has a radiation source control unit 3241 that controls the radiation source 325 so as to irradiate radiation based on predetermined conditions, and a generation control unit 3242 that controls the generation of radiation in response to a signal indicating start or stop of irradiation from the radiation imaging device 300. Note that the radiation source control unit 3241 and the generation control unit 3242 may each be configured as a separate device.

[0019] The AP communication cable 326 is a cable for connecting the access point 320 and the communication control device 323. The radiation generator communication cable 327 is a cable for connecting the radiation generator 324 and the communication control device 323.

[0020] The control device 310 communicates with the radiation generation device 324 and the radiation imaging device 300 via a communication control device 323, an access point 320, or a sensor communication cable 328, and performs overall control of the radiation imaging system 10.

[0021] The radiation irradiation switch 311 inputs the timing of radiation irradiation by operation of the operator 312. The input device 314 is a device for inputting instructions from the operator 312, and various input devices such as a keyboard and a touch panel are used.

[0022] The display device 313 is a device that displays processed radiation image data and a GUI, and a display or the like is used. The hospital LAN 315 is a backbone network within the hospital. The radiation room communication cable 316 is a cable for connecting the control device 310 to the communication control device 323 and communication device 322 in the radiation room 1.

[0023] Next, a description will be given of the operation of the radiation imaging system 10. First, the operator 312 registers the radiation imaging apparatus 300 in the radiation imaging system. When the operator 312 presses the registration switch 303 of the radiation imaging apparatus 300, short-range wireless communication is started between the short-range wireless communication unit 302 of the radiation imaging apparatus 300 and the communication device 322.

[0024] The control device 310 transmits wireless connection related information of the access point 320 to the radiation imaging device 300 via short-range wireless communication of the communication device 322. For example, in the case of a wireless LAN, the wireless connection related information includes a communication method such as IEEE802.11, a physical channel, an SSID, an encryption key, and the like.

[0025] The radiation imaging device 300 sets the wireless communication unit 304 in accordance with the received wireless connection related information. With this setting, the radiation imaging device 300 establishes a wireless communication connection between the access point 320 and the wireless communication unit 304. The wireless connection related information may be transmitted to the radiation imaging device 300 via the sensor communication cable 328 and the wired communication unit 306.

[0026] Next, the operator 312 inputs subject information such as the ID, name, and date of birth of the subject 307, and the imaging region of the subject 307 to the control device 310. After inputting the imaging region, the operator 312 fixes the posture of the subject 307 and the radiation imaging device 300.

[0027] When the imaging preparation is completed, the operator 312 presses the radiation irradiation switch 311. When the radiation irradiation switch 311 is pressed, radiation is irradiated from the radiation source 325 toward the subject 307.

[0028] The radiation imaging apparatus 300 performs wireless communication with the radiation generator 324 and controls the start and end of radiation irradiation. The radiation irradiated to the subject 307 passes through the subject 307 and enters the radiation imaging apparatus 300. The radiation imaging apparatus 300 converts the incident radiation into visible light and then detects it as a radiation image signal with a photoelectric conversion element.

[0029] The radiation imaging apparatus 300 drives the photoelectric conversion element to read out the radiation image signal, converts the analog signal into a digital signal with an AD conversion circuit, and obtains digital radiation image data. The obtained digital radiation image data is transferred from the radiation imaging apparatus 300 to the control apparatus 310.

[0030] The control apparatus 310 performs image processing on the received digital radiation image data. The control apparatus 310 displays a radiation image based on the radiation image data subjected to image processing on the display apparatus 313. The control apparatus 310 functions as an image processing apparatus and a display control apparatus.

[0031] FIG. 2 is a diagram showing the radiation imaging apparatus 300.

[0032] As shown in FIG. 2, the radiation imaging apparatus 300 includes a radiation detector 100. The radiation detector 100 has a function of detecting the irradiated radiation. The radiation detector 100 has a plurality of pixels arranged so as to form a plurality of rows and a plurality of columns. In the following description, the region where the plurality of pixels in the radiation detector 100 are arranged is defined as an imaging region.

[0033] The radiation detector 100 has a plurality of signal lines and a plurality of drive lines. Each signal line corresponds to one of the plurality of columns in the imaging region. Each drive line corresponds to one of the plurality of rows in the imaging region.

[0034] Each signal line is connected to the readout circuit 222. Here, the readout circuit 222 includes a plurality of integrating amplifiers, a multiplexer, and an analog-to-digital converter (hereinafter referred to as an AD converter). Each drive line is driven by the driving circuit 221.

[0035] Also, the radiation detector 100 has bias lines that are connected to each pixel. The bias lines receive a bias voltage Vs from the element power supply circuit 226. The bias voltage Vs is supplied from the element power supply circuit 226.

[0036] The power control unit 301 is composed of a battery, a DC-DC converter, etc. The power control unit 301 includes the element power supply circuit 226 and generates a power supply for the analog circuit and a power supply for the digital circuit that performs driving control, wireless communication, etc.

[0037] The control unit 225 controls the driving circuit 221, the readout circuit 222, etc. based on the information from the signal processing unit 224 and the control commands from the control device 310.

[0038] The radiation image data acquired by these operations is transferred to the control device 310 via the wired communication unit 306 or the wireless communication unit 304.

[0039] Next, the selection of the antenna used by the radiation imaging apparatus 300 for wireless communication will be described. The wireless communication unit 304 is connected to a plurality of antennas and selects some antennas from the plurality of antennas when communicating wirelessly with the control device 310. For example, as shown in FIG. 3, the antenna 11, the antenna 12, the antenna 21, and the antenna 22 are arranged on the four sides of the radiation imaging apparatus 300.

[0040] When the radiation imaging device 300 is used in a bucky system, as shown in FIG. 4, antennas other than the antenna 11 may be covered by the bucky housing 400. In this case, it is difficult for antennas other than the antenna 11 to perform good wireless communication. Therefore, when the radiation imaging device 300 is used in the bucky system, the control device 310 is set to select the antenna 11.

[0041] Thus, when the place where the radiation imaging device 300 is used is inside a housing or the like, and it is known in advance that the radio waves from the antenna are shielded, among the plurality of antennas of the radiation imaging device 300, select an antenna that is not shielded. Although the bucky system was described in the above example, the antenna selection may be performed in the same manner even in a system having a housing for storing the radiation imaging device 300 such as a radiographic table.

[0042] That is, the control device 310 uses the information of the radiation imaging system 10 in which the radiation imaging device 300 is used to select at least one of the plurality of antennas as the antenna used by the radiation imaging device 300 for wireless communication. The information of the antenna to be used is transmitted from the control device 310 to the radiation imaging device 300. Alternatively, the information of the radiation imaging system 10 may be transmitted from the control device 310 to the radiation imaging device 300, and the antenna used by the radiation imaging device 300 may be determined based on the information.

[0043] Also, thereafter, when it is determined that the antenna 11 is not optimal based on wireless communication information such as RSSI, SNR (signal-to-noise ratio), data rate, or the number of wireless devices using the frequency band, etc., the antenna to be used may be changed based on the wireless communication information.

[0044] Further, the location of the radiation imaging apparatus 300 may be identified using known techniques for identifying a location (e.g., a camera, an acceleration sensor, GPS, etc.), the antenna shielded by the radiation imaging apparatus 300 may be estimated, and the antenna to be used may be determined. Further, the imaging situation may be estimated from imaging information such as an imaging protocol, the antenna shielded by the radiation imaging apparatus 300 may be estimated, and the antenna to be used may be determined.

[0045] On the other hand, when the radiation imaging apparatus 300 is used without being installed in a specific apparatus, for example, when held and used by a patient or a technician, the antenna shielded by the hand of the patient or the technician, etc. is indefinite and difficult to predict. In that case, instead of selecting the antenna to be used in advance, the antenna with the best communication condition may be selected from at least one of the various wireless communication information described above for each antenna.

[0046] In the first embodiment, a configuration in which four antennas are arranged on the four sides of the radiation imaging apparatus 300 has been described. However, the number and arrangement locations of the antennas are not limited to this, and it is sufficient that the radiation imaging apparatus 300 has a plurality of antennas.

[0047] Further, in the first embodiment, the bucky system has been used as the place where the radiation imaging apparatus 300 is used for explanation, but it is not limited to this. For example, not limited to the above example, if it is known in advance which antenna has a stable communication environment among the plurality of antennas of the radiation imaging apparatus 300, that antenna may be selected.

[0048] (Second Embodiment) Next, the second embodiment will be described. In the first embodiment, an example in which the wireless communication unit 304 selects an antenna to be used for wireless communication with the control device 310 according to the location where the radiation imaging apparatus 300 is used has been described.

[0049] In the second embodiment, when the control device 310 transmits wireless connection information for the wireless communication unit 304 to communicate wirelessly with the control device 310 to the radiation imaging device 300, a configuration for notifying selection information of the antenna used by the radiation imaging device 300 will be described. In the following description, only the differences from the first embodiment will be described. In this embodiment, an optimal antenna setting according to the location where the radiation imaging device 300 is used is performed for the control device 310.

[0050] Using the sequence diagram of FIG. 5, the operation until the connection between the wireless communication unit 304 and the access point 320 is established will be described. FIG. 5 shows an operation example when the radiation imaging device 300 is a broadcaster (advertiser) that broadcasts data and the control device 310 is an observer (scanner) that monitors data.

[0051] The radiation imaging device 300 includes a short-range wireless communication unit 302 and a wireless communication unit 304. In addition, an access point 320 and a communication device 322 are connected to the control device 310.

[0052] Step 501: After activation, the radiation imaging device 300 acts as an advertiser that broadcasts an advertise packet in order to establish a connection with the control device 310. The radiation imaging device 300 transmits information including a system identifier to the communication device 322 by the short-range wireless communication unit 302. The communication device 322 is connected to the control device 310. The transmission power and the transmission period of the packet at the time of transmission can be set in advance.

[0053] The communication device 322 acts as a scanner that can receive an advertise packet. When the control device 310 recognizes the partner to be connected from the identifier of the system received by the communication device 322 from the short-range wireless communication unit 302, a determination based on a threshold value determined in advance for the signal strength is performed. If it is determined that the threshold value is exceeded, the operation of step 502 is subsequently performed. If it is determined that the threshold value is not exceeded, the operation of step 501 is performed again.

[0054] Step 502: The communication device 322 sends a connection request to the short-range wireless communication unit 302, and then the operation of step 503 is performed. The sending of the connection request may be performed by an operation of an operator using the input unit of the control device 310. Also, when implementing step 502, the communication device 322 becomes an initiating state which is a connection start state.

[0055] Step 503: The short-range wireless communication unit 302 and the communication device 322 enter a connected state. At this time, pairing which is sharing of encryption keys or mutual service search may be performed between the short-range wireless communication unit 302 and the communication device 322. Then, the operation of step 504 is performed.

[0056] Step 504: The communication device 322 transmits the SSID of the access point 320 to the short-range wireless communication unit 302 as wireless connection information. For example, the SSID is a character string "X". It is preferable that the SSID is encrypted, but it is not necessarily required to be encrypted. Then, the operation of step 505 is performed.

[0057] Step 505: The communication device 322 transmits the encryption key (Key) of the access point 320 to the short-range wireless communication unit 302 as wireless connection information. For example, the Key is a character string "ABCDEFGH". It is preferable that the Key is encrypted, but it is not necessarily required to be encrypted. Then, the operation of step 506 is performed.

[0058] Step 506: The communication device 322 transmits the antenna setting information used by the wireless communication unit 304 to the short-range wireless communication unit 302. For example, the antenna setting information is a character string "A" and includes information on the location where the radiation imaging device 300 is used. The radiation imaging device 300 selects at least one antenna to be used from a plurality of antennas based on the antenna setting information.

[0059] Note that, based on the information of the location where the radiation imaging apparatus 300 is used, at least one antenna used by the control apparatus 310 may be selected, and the information of the selected antenna may be transmitted as antenna setting information to the radiation imaging apparatus 300 in step 506.

[0060] In the description of steps 504 to 506 above, antenna setting information is transmitted following the wireless connection information (SSID and Key), but this is not the only case. The wireless connection information and the antenna setting information may be transmitted simultaneously or continuously, and the order does not matter. Subsequently, the operation of step 507 is performed.

[0061] Step 507: Disconnect the connection between the communication device 322 and the short-range wireless communication unit 302, and subsequently, the operation of step 508 is performed.

[0062] Step 508: The control unit 225 controls the wireless communication unit 304 to connect to the access point 320 according to the communication settings received in steps 504 and 505. Also, according to the antenna setting received in step 506, the control unit 225 controls the antenna used by the wireless communication unit 304. The access point 320 performs authentication according to the new communication settings and conducts communication.

[0063] There may be a case where a plurality of radiation imaging apparatuses 300 are associated with the control apparatus 310. In that case, the control apparatus 310 can individually notify each radiation imaging apparatus 300 of an optimal antenna setting.

[0064] (Other Embodiments) The present invention can also be realized by supplying a program for realizing the above-described functions to a system or apparatus via a network or a storage medium and having one or more processors in a computer of the system or apparatus read and execute the program.

[0065] In addition, various recording media can be used as the recording medium, such as a flexible disk, an optical disk (e.g., CD-ROM, DVD-ROM), a magneto-optical disk, a magnetic tape, a non-volatile memory (e.g., USB memory), a ROM, etc. Also, the program for implementing the above-described functions may be downloaded via a network and executed by a computer.

[0066] Moreover, it is not limited to the case where the functions of the above-described embodiments are realized only by executing the program code read by the computer. Based on the instructions of the program code, an OS (operating system) or the like running on the computer performs part or all of the actual processing, and the case where the functions of the above-described embodiments are realized by such processing is also included.

[0067] Furthermore, the program code read from the recording medium may be written into a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer. Based on the instructions of the program code, a CPU or the like provided in the function expansion board or the function expansion unit performs part or all of the actual processing, and the case where the above-described functions are realized by such processing is also included.

[0068] Regarding the above embodiments, the following supplementary notes are disclosed as one aspect and selective features of the invention.

[0069] (Supplementary Note 1) A control device for controlling a radiation imaging apparatus that transmits a radiation image obtained by radiation imaging using at least one of a plurality of antennas by wireless communication, wherein the control device selects at least one of the plurality of antennas as the antenna to be used for the wireless communication with the radiation imaging apparatus using information on a radiation imaging system in which the radiation imaging apparatus is used, and transmits information on the antenna to be used to the radiation imaging apparatus. A control device characterized by the above.

[0070] (Supplementary Note 2) The information of the radiation imaging system is information on the environment in which the radiation imaging device in the radiation imaging system is used, The control device may select at least one of the unshielded antennas among the plurality of antennas in the environment as the antenna to be used.

[0071] (Appendix 3) When the environment is an environment in which the radiation imaging device is stored in a housing, the control device may select an antenna that is not shielded by the housing among the plurality of antennas.

[0072] (Appendix 4) The control device may transmit the information of the radiation imaging system and the wireless connection information for performing the wireless communication to the radiation imaging device simultaneously or continuously.

[0073] (Appendix 5) The control device may have different communication methods for the wireless communication and a wireless communication different from the wireless communication for communicating the wireless connection information for performing the wireless communication.

[0074] (Appendix 6) The control device may use at least one of IEEE802.11 and Bluetooth in the wireless communication and the different wireless communication.

[0075] (Appendix 7) The control device according to any one of Appendices 1 to 6, and the radiation imaging device, A radiation imaging system characterized by having.

[0076] (Appendix 8) A radiation imaging device that transmits a radiation image obtained by radiation imaging to a control device using at least one of a plurality of antennas by wireless communication, The radiation imaging device selects at least one of the plurality of antennas as an antenna to be used for the wireless communication with the control device by using information on a radiation imaging system in which the radiation imaging device is used. A radiation imaging device characterized by the above.

[0077] (Appendix 9) The information on the radiation imaging system is information on the environment in which the radiation imaging device in the radiation imaging system is used. The control device may select at least one of the antennas that are not shielded among the plurality of antennas in the environment as the antenna to be used.

[0078] (Appendix 10) When the environment is an environment in which the radiation imaging device is stored in a housing, the radiation imaging device may select at least one of the plurality of antennas that are not shielded by the housing as the antenna to be used.

[0079] (Appendix 11) The radiation imaging device may change the antenna to be used based on communication environment information of the plurality of antennas.

[0080] (Appendix 12) The communication environment information may be at least any one of RSSI, SNR, data rate, and the number of wireless devices using the same frequency band.

[0081] (Appendix 13) When it is indefinite which of the plurality of antennas are shielded from the information on the radiation imaging system, the radiation imaging device may select at least one antenna to be used from the plurality of antennas based on the communication environment information of the plurality of antennas.

[0082] (Appendix 14) The communication environment information may be at least any one of RSSI, SNR, data rate, and the number of wireless devices using the same frequency band. good.

[0083] (Appendix 15) The radiation imaging device may receive information of the radiation imaging system from the control device. good.

[0084] (Appendix 16) A radiation imaging device that transmits a radiation image obtained by radiation imaging to a control device using at least one of a plurality of antennas by wireless communication, The radiation imaging device selects at least one of the plurality of antennas as an antenna to be used for the wireless communication with the control device according to the location where the radiation imaging device is used. characterized by the radiation imaging Device.

[0085] (Appendix 17) The radiation imaging device according to any one of Appendices 7 to 16, and the control device, characterized by having characterized by the radiation imaging system Tem.

[0086] (Appendix 18) A control method for a radiation imaging device that transmits a radiation image obtained by radiation imaging to a control device using at least one of a plurality of antennas by wireless communication, A selection step of selecting an antenna to be used for the wireless communication from the plurality of antennas is performed according to information of a radiation imaging system in which the radiation imaging device is used. characterized by the control method.

[0087] (Appendix 19) A program for causing a computer to execute the control method described in Appendix 18.

Explanation of Reference Numerals

[0088] 10 Radiation imaging system 11, 12, 21, 22 Antenna 300 Radiation imaging device 310 Control device

Claims

1. A control device, comprising a plurality of antennas for connecting to a network using wireless communication, and being capable of communicating with a radiation imaging device used for radiation imaging at a location where it is used, at a position away from the location where it is used and where the radiation imaging device and the control device can communicate, execute communication with the radiation imaging device to provide predetermined information corresponding to the wireless communication environment at the location where it is used to the radiation imaging device, wherein the predetermined information is used in the radiation imaging device when setting an antenna to be used for the wireless communication from among the plurality of antennas. A control device characterized by this.

2. The predetermined information is information indicating an antenna to be used for the wireless communication, and the control device selects at least one of the plurality of antennas that is not shielded in the environment from among the plurality of antennas as an antenna corresponding to the predetermined information based on information on the environment in which the radiation imaging device is used. The control device according to claim 1, characterized by this.

3. When the information on the environment indicates that the radiation imaging device is in an environment where it is stored in a housing, the control device selects, as an antenna corresponding to the predetermined information, an antenna among the plurality of antennas that is not shielded by the housing. The control device according to claim 2, characterized by this.

4. The control device according to claim 1, characterized in that the control device transmits the predetermined information and wireless connection information for performing the wireless communication to the radiation imaging device simultaneously or continuously.

5. The control device according to claim 1, characterized in that the control device transmits the predetermined information to the radiation imaging device using wireless communication different from the wireless communication.

6. The wireless communication is communication according to IEEE 802.11, and the different wireless communication is short-range wireless communication. The control device according to claim 5, characterized by this.

7. A radiation imaging system comprising a radiation imaging device that has a plurality of antennas for connecting to a network using wireless communication and is used for radiation imaging at a location where it is used, and a control device capable of communicating with the radiation imaging device, wherein the radiation imaging device is At a position away from the location where it is used and where the radiation imaging device and the control device can communicate, communication is executed with the control device to obtain predetermined information according to the wireless communication environment at the location where it is used. A radiation imaging system, characterized in that an antenna for use in the wireless communication is set from among the plurality of antennas based on the predetermined information.

8. A radiation imaging device that includes a plurality of antennas for connecting to a network using wireless communication and is used for radiation imaging at the location where it is used. The radiation imaging device At a position away from the location where it is used and where the radiation imaging device and the control device can communicate, communication is executed with the control device to obtain predetermined information according to the wireless communication environment at the location where it is used. A radiation imaging device, characterized in that an antenna for use in the wireless communication is set from among the plurality of antennas based on the predetermined information.

9. The predetermined information is information on the environment in which the radiation imaging device is used. The radiation imaging device according to claim 8, characterized in that at least one of the unshielded antennas among the plurality of antennas in the environment is selected as the antenna for use in the wireless communication.

10. When the information on the environment indicates that the radiation imaging device is in an environment where it is housed in a housing, the radiation imaging device according to claim 9, characterized in that at least one of the antennas not shielded by the housing among the plurality of antennas is selected as the antenna for use in the wireless communication.

11. The radiation imaging device changes the antenna for use in the wireless communication based on the communication environment information of the plurality of antennas. The radiation imaging device according to claim 8, characterized in that

12. The radiation imaging device according to claim 11, characterized in that the communication environment information is at least any one of RSSI, SNR, data rate, and the number of wireless devices using the same frequency band.

13. When the predetermined information indicates that the antenna to be shielded among the plurality of antennas is indefinite, the radiation imaging device selects at least one antenna for use in the wireless communication from among the plurality of antennas based on the communication environment information of the plurality of antennas. The radiation imaging apparatus according to claim 8, characterized in that.

14. The radiation imaging apparatus according to claim 13, characterized in that the communication environment information is at least any one of RSSI, SNR, data rate, and the number of wireless devices using the same frequency band.

15. The radiation imaging apparatus according to claim 8, characterized in that the radiation imaging apparatus receives the predetermined information from the control device.

16. A radiation imaging apparatus used for radiation imaging while stored in a housing, A plurality of antennas for connecting to a network using wireless communication, A short-range wireless communication unit, Means for performing short-range wireless communication with a short-range wireless communication device installed outside the housing and acquiring predetermined information according to the wireless communication environment inside the housing, Means for setting an antenna to be used for the wireless communication from among the plurality of antennas based on the predetermined information. A radiation imaging apparatus characterized by this.

17. In a radiation imaging system including a radiation imaging apparatus having a plurality of antennas for connecting to a network using wireless communication, a housing for storing the radiation imaging apparatus for radiation imaging, and a short-range wireless communication device installed outside the housing, The radiation imaging apparatus, Performs short-range wireless communication with the short-range wireless communication device installed outside the housing and acquires predetermined information according to the wireless communication environment inside the housing, Sets an antenna to be used for the wireless communication from among the plurality of antennas based on the predetermined information. A radiation imaging system characterized by this.

18. A control method for a radiation imaging apparatus that has a plurality of antennas for connecting to a network using wireless communication and is used for radiation imaging at a place where it is used, The control method includes, A step of performing communication with a control device at a position away from the place where it is used and where the radiation imaging apparatus and the control device can communicate, and acquiring predetermined information according to the wireless communication environment at the place where it is used, A step of setting an antenna to be used for the wireless communication from among the plurality of antennas based on the predetermined information. A control method characterized by having this.

19. A program for causing a computer to execute the control method according to claim 18.

Images