JP2024077317A - Radiation imaging device, radiation imaging system, and control device - Google Patents

Abstract

[Problem] To provide a radiation imaging system that can easily detect an abnormality in a radiation imaging device in real time even when an abnormality occurs in the radiation imaging device, and can notify an external party such as a maintenance center of accurate and minimum necessary information. [Solution] A radiation imaging device that performs radiation imaging based on irradiated radiation, comprising: a determination unit that determines second information to be transmitted to an external party of the radiation imaging device from among first information related to the radiation imaging device; and a communication unit that communicates with the external party and transmits the second information to the external party, wherein the determination unit causes the communication unit to transmit to the external party third information, which is added to the second information from among the first information, in response to a request from the external party that has received the second information. [Selected Figure] Figure 4

Description

The present disclosure relates to a radiation imaging device, a radiation imaging system, and a control device.

In recent years, radiation imaging devices using flat panel detectors consisting of 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 for use in medical imaging diagnosis and non-destructive testing using radiation.

Such radiation imaging devices accumulate signal charges generated for each pixel according to the amount of radiation detected, and can obtain images by reading out the charges and performing A/D conversion. For example, in medical image diagnosis, such radiation imaging devices are used as digital imaging devices for taking still images such as general radiography, and for taking moving images such as fluoroscopy.

In addition, wireless radiography devices have been developed and are now easier to handle, so they are now often installed on operating tables or cradles, or used in mobile carts, and are therefore more likely to be transported by hand, which can lead to malfunctions, for example, if they are dropped.

In addition, as devices are increasingly being carried around, the environments in which they are installed are becoming more diverse. For example, medical equipment that emits magnetic noise, such as MRIs, can cause noise in images or interfere with wireless communications.

To detect such abnormalities, test photography may be performed periodically to check whether the captured images are normal. For example, Patent Document 1 discloses a method for statistically processing analysis values obtained from image information acquired by a photography device to detect abnormalities in the photography device and notify a maintenance center of the detection results.

JP 2002-277993 A

Due to the increasing sophistication of radiation imaging devices in recent years, a wide variety of abnormalities occur, and in many cases the abnormality cannot be determined mechanically, requiring judgment by a serviceman or other expert. For example, in order for a serviceman to accurately grasp the situation, it may be necessary to acquire and monitor detailed data, but constant online monitoring of such data poses challenges such as the expansion of storage media and a shortage of communication resources.

The above problem is solved by a radiation imaging device that performs radiation imaging based on irradiated radiation, the radiation imaging device having a determination unit that determines second information to be transmitted to the outside of the radiation imaging device from among first information related to the radiation imaging device, and a communication unit that communicates with the outside and transmits the second information to the outside, the determination unit causing the communication unit to transmit to the outside third information, which is added to the second information from among the first information, in response to a request from the outside that has received the second information.

At least one embodiment of the present disclosure provides a radiation imaging device that can easily detect an abnormality in the radiation imaging device in real time when an abnormality occurs in the radiation imaging device and can notify an external party, such as a maintenance center, of accurate and minimum necessary information.

1 is a schematic diagram illustrating a radiation imaging system according to a first embodiment. 1 is a functional block diagram of a radiation imaging apparatus according to a first embodiment. FIG. 2 is a functional block diagram of a control device according to the first embodiment. 5 is a sequence diagram for detecting an abnormality in the radiation imaging system according to the first embodiment. FIG. FIG. 11 is a sequence diagram for performing calibration of a radiation imaging system according to the second embodiment.

(First embodiment)
Hereinafter, a radiation imaging system according to the present embodiment will be described with reference to the drawings. Fig. 1 is a diagram showing a radiation imaging system according to a first embodiment.

As shown in FIG. 1, the radiography system 10 is provided in a radiography room 1 where radiography is performed by irradiating radiation, and a control room 2 installed near the radiography room 1.

The radiation imaging system 10 includes a radiation imaging device 300, an access point 320, a communication control device 323, a radiation generating device 324, and a radiation source 325 in the radiation room 1. The radiation imaging system 10 further includes an entry device 322, an AP communication cable 326, a radiation generating device communication cable 327, and a sensor communication cable 328 in the radiation room 1.

The control room 2 of the radiography system 10 is also equipped with a control device 310, a radiation exposure switch 311, a display device 313, an input device 314, an in-hospital LAN 315, and a radiography room communication cable 316.

The radiation imaging device 300 includes a power supply unit 301, 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.

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

The radiation generating device 324 controls the radiation source 325 to irradiate the subject 307 with radiation. The radiation generating device 324 controls the radiation source 325 to irradiate radiation based on predetermined conditions, and controls the generation of radiation in response to a signal indicating the start or stop of irradiation from the radiation imaging device 300.

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

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

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

The display device 313 is a device that displays processed radiographic image data and a GUI, and a display or the like is used. The hospital LAN 315 is the 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 entry device 322 in the radiation room 1.

Next, the operation of the radiation imaging system 10 will be described.

First, the operator 312 registers the radiation imaging device 300 in the radiation imaging system. When the operator 312 presses the registration switch 303 of the radiation imaging device 300, short-range wireless communication is started between the short-range wireless communication unit 302 of the radiation imaging device 300 and the entry device 322.

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 entry 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, etc.

The radiation imaging device 300 configures the wireless communication unit 304 according to the received wireless LAN connection related information. With this configuration, the radiation imaging device 300 establishes a wireless communication connection between the access point 320 and the wireless communication unit 304.

In addition, this 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.

Next, the operator 312 inputs subject information such as the ID, name, and date of birth of the subject 307, and the body part of the subject 307 to be imaged, into the control device 310. After inputting the body part to be imaged, the operator 312 fixes the posture of the subject 307 and the radiation imaging device 300.

When preparation for imaging is complete, 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.

The radiation imaging device 300 wirelessly communicates with the radiation generating device 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 device 300. The radiation imaging device 300 converts the incident radiation into visible light, and then detects it as a radiation image signal using a photoelectric conversion element.

The radiation imaging device 300 drives the photoelectric conversion element to read out the radiation image signal, and converts the analog signal to a digital signal in an AD conversion circuit to obtain digital radiation image data. The obtained digital radiation image data is transferred from the radiation imaging device 300 to the control device 310 via wireless communication.

The control device 310 performs image processing on the received digital radiation image data. The control device 310 displays a radiation image based on the image-processed radiation image data on the display device 313. The control device 310 functions as an image processing device and a display control device.

The camera 330 is disposed in the radiation source 325 and is used to capture images of the subject 307 and the radiation imaging device 300 and to assist in the positioning of the subject 307 and the radiation imaging device 300. The camera 330 also includes a wireless communication unit (not shown) and communicates wirelessly with the access point 320.

Figure 2 is a functional block diagram of the radiation imaging device 300. As shown in Figure 2, the radiation imaging device 300 has a radiation detector 100. The radiation detector 100 has a function of detecting irradiated radiation. The radiation detector 100 has a plurality of pixels arranged to form a plurality of rows and a plurality of columns. In the following description, the region in which the plurality of pixels are arranged in the radiation detector 100 is referred to as the imaging region.

The radiation detector 100 has multiple signal lines and multiple drive lines. Each signal line corresponds to one of the multiple columns in the imaging area. Each drive line corresponds to one of the multiple rows in the imaging area.

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

The radiation detector 100 also has a bias line connected to each pixel. A bias voltage VS is supplied from the power supply unit 301 through the bias line.

The power supply unit 301 is composed of a battery, a DCDC converter, etc., and supplies power to each part of the radiation imaging device 300. The power supply unit 301 generates power for analog circuits and power for digital circuits that perform drive control, wireless communication, etc.

The first control unit 225 controls the drive circuit 221 and the readout circuit 222, etc., based on information from the signal processing unit 224 and control commands from the control device 310. The second control unit 226 controls the short-range wireless communication unit 302, the wireless communication unit 304, the wired communication unit 306, etc. The second control unit also controls the startup of the first control unit 225, as described below.

The sensor 227 is a detection means for detecting the state of the radiation imaging device 300. The sensor 227 is connected to the first control unit 225 and has at least one of an acceleration sensor, an angular velocity sensor, a temperature sensor, a humidity sensor, a current sensor, a voltage sensor, a magnetic sensor, a surface potential sensor, an optical sensor, a water leakage sensor, and various counters.

Figure 3 is a functional block diagram of the control device 310. As shown in Figure 3, the control device 310 includes a communication unit 408, an interface unit 409, a state determination unit 410, a control unit 411, and a memory unit 412.

The communication unit 408 communicates via the radiation room communication cable 316. It is also connected to the hospital LAN 315, which is the hospital's core network, and when the status determination unit 410 determines that the internal information of the radiation imaging device 300 is within the normal range, it transmits a normal determination notification to the maintenance center via the communication device 317.

The interface unit 409 performs input and output with the display device 313 and the input device 314. The status determination unit 410 determines whether the internal information of the radiation imaging device 300 received from the radiation imaging device 300 is within a normal range. This can be determined by comparing the information with the upper and lower limit normal values stored in the memory unit 412. The control unit 411 performs overall control of the control device 310.

In the radiation imaging system 10 configured as above, the operation of acquiring internal information of the radiation imaging device 300, determining whether the information is within the normal range, and transmitting the data to the maintenance center will be described with reference to FIG. 4.

When the radiation imaging device 300 is in a standby state where no imaging operation is being performed, the radiation detector 100, the drive circuit 221, the readout circuit 222, and the first control unit 225 used during imaging are in a power-off state. In addition, the power of at least one of the second control unit 226 and the short-range wireless communication unit 302, the wireless communication unit 304, and the wired communication unit 306 is in an on state, i.e., they are in a state where they can communicate with the control device 310.

Based on an imaging instruction from the user, the control device 310 transmits a startup instruction command S401 to the radiation imaging device 300. The startup instruction command can be realized by transmitting a packet for starting wired communication, wireless communication, and short-range wireless communication.

When the radiation imaging device 300 receives a startup instruction from the control device 310 in S402, it makes all components in the radiation imaging device 300 operable. In this embodiment, the radiation detector 100, the drive circuit 221, the readout circuit 222, and the first control unit 225, which were in a power-off state, are powered on and started up by the control of the second control unit 226.

When the radiation detector 100, the drive circuit 221, the readout circuit 222, and the first control unit 225 are started, the radiation imaging device 300 transitions to a state where imaging is possible. The start-up signal may be provided with individual identification information of the radiation imaging device to be started. When the radiation imaging device 300 receives the start-up signal, the second control unit 226 compares the individual identification information in the start-up signal with the individual identification information of the radiation imaging device 300, and does nothing in particular if there is no match or if the matching first control unit 225 is already started.

When the start-up of the radiation imaging device 300 is completed, in S403 the control device 310 is notified of the start-up completion. The start-up completion notification may be sent using any communication method using the wired communication unit 306, the wireless communication unit 304, or the short-range wireless communication unit 302. As the wireless communication method, IEEE802.11 or Bluetooth (registered trademark) may be used, or another communication method may be used. Furthermore, when Bluetooth is used as the communication method, data may be added to the advertising signal and transmitted. Furthermore, the wireless communication unit 304 and the short-range wireless communication unit 302 may be different functional areas on the same electrical board.

When the radiation imaging device 300 is started, in S405, the internal information of the radiation imaging device 300 is acquired based on the internal information acquisition instruction S404 from the control device 310. Hereinafter, the internal information transmitted by the radiation imaging device 300 at this timing is referred to as the first information.

The first information includes individual identification information of the radiation imaging device 300, the number of images that have not been transferred from the radiation imaging device 300 after imaging, the number of images that can be stored in the radiation imaging device 300, and the error history of the radiation imaging device 300. In addition, the first information may include information on the remaining battery charge and the number of times the battery has been charged for the battery of the power supply unit 301.

Information on the communication environment of wireless communication by the wireless communication unit 304, specifically information on the RSSI value and the state of radio wave interference, may also be included. Information on the temperature, humidity, angle, position, voltage, current, etc. of the radiation imaging device 300 detected using various detection means such as the sensor 227 may also be included.

It may also include an image in a state where radiation is not being irradiated, the bias voltage VS for a specified period of time, and data used to detect the radiation exposure dose using the AEC (Auto Exposure Control) function. It may also include information on the average value fluctuation, in-plane distribution, histogram, and missing pixels from pixel values within the frame or region of interest of the acquired image data.

The error information includes, for example, information that access to a device such as the sensor 227 or the memory unit 228 has failed. Other examples include information that the radiation imaging device 300 has detected an impact, such as when the radiation imaging device 300 has been dropped. Impact detection may be performed by mounting a known sensor such as an acceleration sensor in the sensor 227 and detecting that an acceleration equal to or greater than a predetermined value has been applied to the radiation imaging device 300.

These pieces of first information are stored in the storage unit 228. However, it may be difficult to continue storing all of the first information in terms of the available capacity of the storage unit 228. In that case, the storage unit 228 may select a portion of the first information and leave it in the storage unit 228. The storage unit 228 may also hold the first information for a predetermined period of time.

Next, in S406, the judgment unit 229 judges whether the acquired first information is within a normal range. If the first information is within the normal range, in S407, an image capture request is sent to the control device 310. Here, it is preferable to send the first information in the image capture request in addition to a record that the first information was normal. However, it is preferable that the first information in this case be the minimum necessary data, such as individual identification information and time information. This is because transferring information from all of the sensors 227 and memory unit 228 would cause delays in the image capture operation and strain communication resources.

If the determination unit 410 of the control device 310 determines in S408 that imaging should be continued, the control device 310 transmits imaging permission in S409, and the radiation imaging device 300 performs imaging S410. As for the next operation, in FIG. 4, the first information acquisition instruction is given in S411, but it is also possible to return to S405 internal information acquisition and repeat the imaging operation, or to end imaging or perform another operation.

As with the startup completion notification, the communication means for transmitting and receiving the first information may be any of the wired communication unit 306, the wireless communication unit 304, and the short-range wireless communication unit 302.

If the first information is outside the normal range in S406, the judgment unit 229 judges in S413 whether additional information is needed in addition to the information outside the normal range. Specifically, if the internal temperature is out of range, it is preferable to use related information as additional information, such as internal circuit voltage and current information assuming a circuit abnormality, and if the angle information is out of range, position information assuming an abnormality in the shooting positioning, as this will lead to identification of the abnormality. In addition, for example, if the wireless signal strength is abnormal, it is preferable to use internal circuit voltage and current information and position information assuming a circuit abnormality or an abnormality in the shooting location, and if the remaining battery charge is abnormal, the internal temperature and the number of shots, etc.

The additional information may be past data stored in the memory unit 228. Even if the additional information is within the normal range, if there is a change compared to the past information, the additional information may be repeatedly acquired based on that information. When the acquisition of the additional information is completed, the determination unit 229 transmits internal information to the control device 310 in S414. The information transmitted from the radiation imaging device 300 to the control device 310 at this timing is referred to as second information.

In S414, the determination unit 410 determines in more detail whether the received information is within the normal range by comparing the upper and lower normal limits of each piece of information stored in the memory unit 412 with previous maintenance records, records of other radiation imaging devices, etc. The function of the determination unit 410 may be possessed by the radiation imaging device 300, but since the control device 310 is generally a computer capable of high-speed and large-scale calculation processing such as a workstation, it is preferable to use the control device 310.

The determination unit 410, for example, determines whether the imaging device has been dropped or hit when it detects that the acceleration applied to the radiation imaging device 300 is equal to or greater than a predetermined value based on information from an acceleration sensor. In addition, it may determine which part of the internal circuit of the radiation imaging device 300 has failed based on information from a temperature sensor, a current sensor, a voltage sensor, etc.

In addition, it may be possible to determine whether static electricity of a predetermined value or more has been applied to the radiation imaging device 300 based on information from the surface potential sensor. In addition, it may be possible to obtain the environmental temperature and compare it with the internal temperature of the radiation imaging device 300 to determine whether a heat-related abnormality has occurred. In addition, it may be possible to determine whether light leakage or water intrusion has occurred inside the radiation imaging device 300 based on the value of an optical sensor such as a phototransistor or a water leakage sensor such as a resistance detection type.

Abnormalities may also be determined from the fluctuation of the average value calculated from the pixel values in the acquired image without radiation irradiation, histograms, in-plane distribution, and information on missing pixels. Abnormalities may also be determined from the voltage of the bias voltage VS for a specified period of time, the value of the data used to detect the radiation exposure dose by the AEC function, and the like. Image abnormalities may also be determined at a higher level using machine learning, etc.

If the determination unit 410 finds that there is insufficient information, it issues an instruction to acquire internal information in S416, acquires the internal information in S417, and receives the internal information in S418. The internal information acquired by the control device 310 from the radiation imaging device 300 at this timing is referred to as third information.

The acquisition instruction is issued when a judgment cannot be made from the information in S415 or when more detailed data is required by the judgment unit. For example, when a judgment cannot be made, all internal information may be acquired, or data on related items may be expanded and acquired. In the case of voltage or current, the acquisition interval may be narrowed to acquire transient response information. In the case of internal temperature, acquisition may be performed after a certain period of time has elapsed.

After the necessary information has been acquired, in S419, the maintenance center is notified of the abnormality and internal information is sent. At this point, the user may be notified of the details of the abnormality using the display device 313 or the like. In addition, the user may decide whether or not to send information to the maintenance center.

Next, in S408, the judgment unit 410 of the control device 310 judges whether to continue shooting. For example, if there is a temporary abnormality in the environmental temperature or wireless radio wave conditions, the user is prompted to improve the environment and shooting continues. It is also possible to perform a reset operation or recalibration of the shooting system. To continue shooting, as described above, in S409 the control device 310 sends permission to shoot, and the radiation imaging device 300 shoots and operates according to the next instruction from the control device 310. Conversely, if there is an unrecoverable abnormality, shooting is stopped.

As described above, in the radiation imaging system 10 of this embodiment, even if an abnormality occurs in the radiation imaging device 300, it is possible to easily detect the abnormality in real time, and the radiation imaging device 300 and the control device 310 can select the minimum amount of information to be sent to the maintenance center. This can reduce the possibility of the storage medium becoming bloated and communication resources becoming strained.

Second Embodiment
In the first embodiment, a radiation imaging system that periodically acquires internal information of the radiation imaging device and periodically transmits abnormality information has been described. In the present embodiment, a flow will be described for a case where a user notices an abnormality, performs a calibration operation on the radiation imaging device 300, acquires internal information again, and performs a normality determination. The following flow can be suitably used for checking whether the radiation imaging device 300 is in a normal state, for example, when the radiation imaging device 300 has been dropped or when there is something unusual about an image or the like.

Figure 5 explains the operation of the radiation imaging system 10 to acquire internal information of the radiation imaging device 300, determine whether the information is within the normal range, and if it is outside the normal range, acquire the internal information again to determine whether it is normal, and send a notification of the determination to the maintenance center.

The configuration of the radiation imaging system 10 is the same as in the first embodiment, so a description thereof will be omitted. Also, steps S401 to S419 in FIG. 5 are the same as those in FIG. 4 described in the first embodiment, so a description thereof will be omitted. What differs from FIG. 4 is that there is no step S407 and steps S409 to S410 related to the imaging operation, and steps S501 to S505 according to this embodiment have been added.

If there is a possibility that the radiation imaging device 300 is not in a normal state, the user can input an instruction to perform a calibration operation using the interface unit 409 of the control device 310. Based on that input, the calibration operation is started in S501.

The operations up to S406 are the same as in the first embodiment, so a description thereof will be omitted. In S406, the judgment unit 229 judges whether the internal information of the radiation imaging device 300 acquired in S405 is within the normal range. If the internal information is within the normal range, a normal notification is sent to the control device 310 in S502. If the internal information is outside the normal range, the operations up to S418 are the same as in the first embodiment, so a description thereof will be omitted. However, for S415, the judgment conditions may be changed based on input from the interface unit 409.

Next, in S503, the determination unit 410 determines whether or not to continue shooting based on the internal information in S502, S414, and S418. Notification of whether or not to continue shooting is made by the interface unit 409 of the control device 310. In S419, a notification of the abnormality and transmission of the internal information to the maintenance center are made. Furthermore, the user may decide whether or not to send the internal information.

As described above, in the radiation imaging system of the second embodiment, abnormalities can be easily detected even when checking for abnormalities after a calibration operation is performed in the radiation imaging device 300, and the radiation imaging device 300 and the control device 310 can select the minimum amount of information to be transmitted to the outside. This can reduce the possibility of the storage medium becoming bloated and communication resources becoming strained.

In the above embodiment, the control device 310 is described as transmitting information to the maintenance center, but this is not limited to the above, and the information may be transmitted using the radiation imaging device 300.

Other embodiments
The present disclosure can also be realized by supplying a program that achieves the above-mentioned functions to a system or device via a network or storage medium, and having one or more processors in a computer of the system or device read and execute the program.

The recording medium may be 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, or any other suitable recording medium. The program that implements the above-mentioned functions may be downloaded via a network and executed by a computer.

Furthermore, the functions of the above-mentioned embodiments are not limited to being realized only by the computer executing the program code that it has read. It also includes cases where an operating system (OS) running on a computer performs some or all of the actual processing based on the instructions of the program code, and the functions of the above-mentioned embodiments are realized through that processing.

Furthermore, the program code read from the recording medium may be written to memory on a function expansion board inserted into the computer or on a function expansion unit connected to the computer. This also includes cases where a CPU or the like on the function expansion board or function expansion unit performs some or all of the actual processing based on the instructions of the program code, and the above-mentioned functions are realized through this processing.

With regard to the above embodiment, the following notes are disclosed as one aspect and optional feature of the present disclosure.

(Appendix 1)
A radiation imaging apparatus for performing radiation imaging based on irradiated radiation,
a determination unit that determines second information to be transmitted to an outside of the radiation imaging device, out of the first information related to the radiation imaging device;
a communication unit that communicates with the outside and transmits the second information to the outside,
The radiation imaging device is characterized in that the judgment unit causes the communication unit to transmit to the outside third information, which is added to the second information among the first information, in response to a request from the outside upon receiving the second information.

(Appendix 2)
The communication unit communicates with a control device included in the radiation imaging system as the external device,
The determination unit may cause the communication unit to transmit to the control device third information, which is to be added to the second information, from the first information, in response to a request from the control device that has received the second information.

(Appendix 3)
The determination unit may determine whether or not to cause the communication unit to transmit an image capturing request to the control device based on the first information.

(Appendix 4)
When determining from the first information that there is no abnormality in the radiation imaging apparatus, the determination section may cause the communication section to transmit the imaging request.

(Appendix 5)
The information processing device may further include a storage unit that stores at least a portion of the first information for a predetermined period of time.

(Appendix 6)
The first information may include at least one of individual identification information of the radiation imaging device, the number of images that have not been transferred from the radiation imaging device to the outside after the radiation imaging is performed, the number of images that can be stored in the radiation imaging device, a history of errors that have occurred in the radiation imaging device, and information regarding images obtained by the radiation imaging.

(Appendix 7)
The information about the image may include at least one of a variation in an average value of pixel values, an in-plane distribution of pixel values, a histogram of pixel values, and information about defective pixels.

(Appendix 8)
a battery for supplying power to each unit of the radiation imaging apparatus;
The first information may include at least one of a remaining charge of the battery and the number of times the battery has been charged.

(Appendix 9)
The communication unit includes a wireless communication unit,
The first information may include information regarding a communication environment of the wireless communication unit.

(Appendix 10)
a detection means for detecting a state of the radiation imaging apparatus;
The first information may include at least one of temperature, humidity, angle, position, voltage, and current detected by the detection means.

(Appendix 11)
The detection means may include at least one of an acceleration sensor, an angular velocity sensor, a current sensor, a voltage sensor, a temperature sensor, a humidity sensor, a magnetic sensor, a surface potential sensor, and an optical sensor.

(Appendix 12)
A radiation imaging apparatus according to any one of claims 1 to 11,
a radiation source for irradiating the radiation imaging device with radiation;
A radiation imaging system comprising:

(Appendix 13)
a control device for controlling the radiation imaging device,
In response to receiving the second information, the control device may transmit information including the second information to an outside of the radiation imaging system.

(Appendix 14)
When the second information has an abnormality, the control device may request the radiation imaging device to transmit the third information, and transmit the second information and the third information to an outside of the radiation imaging system.

(Appendix 15)
When the second information has no abnormality, the control device may transmit permission to capture an image in response to an image capturing request from the radiation imaging device.

(Appendix 16)
A control device for controlling a radiation imaging system having a radiation imaging device that performs radiation imaging based on irradiated radiation,
The control device may, in response to receiving second information, which is part of the first information regarding the radiation imaging device, transmitted from the radiation imaging device, cause the radiation imaging device to transmit third information, which is part of the first information, and transmit the second information and the third information to an outside of the radiation imaging system.

(Appendix 17)
1. A method for controlling a radiation imaging system having a radiation imaging apparatus that performs radiation imaging based on irradiated radiation, comprising:
a receiving step of receiving second information, which is a part of the first information related to the radiation imaging device, from the radiation imaging device;
a request step of requesting the radiation imaging apparatus to transmit third information, which is a part of the first information, based on the second information;
a transmitting step of transmitting the second information and the third information to an outside of the radiation imaging system.

(Appendix 18)
A program for causing a computer to execute the control method described in appendix 17.

10 Radiation imaging system 229 Determination unit 300 Radiation imaging device 304 Wireless communication unit 310 Control device

Claims (18)

A radiation imaging apparatus for performing radiation imaging based on irradiated radiation,
a determination unit that determines second information to be transmitted to an outside of the radiation imaging device, out of the first information related to the radiation imaging device;
a communication unit that communicates with the outside and transmits the second information to the outside,
The radiation imaging device is characterized in that the judgment unit causes the communication unit to transmit to the outside third information, which is added to the second information among the first information, in response to a request from the outside that has received the second information. The communication unit communicates with a control device included in the radiation imaging system as the external device,
The radiation imaging device according to claim 1, characterized in that the determination unit causes the communication unit to transmit to the control device third information, which is added to the second information among the first information, in response to a request from the control device that has received the second information. The radiation imaging device according to claim 2, characterized in that the determination unit determines whether or not to cause the communication unit to transmit an imaging request to the control device based on the first information. The radiation imaging device according to claim 3, characterized in that the determination unit causes the communication unit to transmit the imaging request when it is determined from the first information that there is no abnormality in the radiation imaging device. The radiation imaging device according to claim 1, characterized in that it has a storage unit that stores at least a portion of the first information for a predetermined period of time. The radiation imaging device according to claim 1, characterized in that the first information includes at least one of individual identification information of the radiation imaging device, the number of images that have not been transferred from the radiation imaging device to the outside after the radiation imaging is performed, the number of images that can be stored in the radiation imaging device, a history of errors that have occurred in the radiation imaging device, and information about images acquired by the radiation imaging. The radiation imaging device according to claim 6, characterized in that the information about the image includes at least one of the following: a variation in the average pixel value, an in-plane distribution of pixel values, a histogram of pixel values, and information about defective pixels. a battery for supplying power to each unit of the radiation imaging apparatus;
2. The radiation imaging apparatus according to claim 1, wherein the first information includes at least one of a remaining charge of a battery and a number of times the battery has been charged. The communication unit includes a wireless communication unit,
2. The radiation imaging apparatus according to claim 1, wherein the first information includes information about a communication environment of the wireless communication unit. a detection means for detecting a state of the radiation imaging apparatus;
2. The radiation imaging apparatus according to claim 1, wherein the first information includes at least one of temperature, humidity, angle, position, voltage, and current detected by the detection means. The radiation imaging device according to claim 10, characterized in that the detection means includes at least one of an acceleration sensor, an angular velocity sensor, a current sensor, a voltage sensor, a temperature sensor, a humidity sensor, a magnetic sensor, a surface potential sensor, and an optical sensor. A radiation imaging apparatus according to any one of claims 1 to 11,
a radiation source for irradiating the radiation imaging device with radiation;
A radiation imaging system comprising: a control device for controlling the radiation imaging device,
The radiation imaging system according to claim 12 , wherein the control device transmits information including the second information to an outside of the radiation imaging system in response to receiving the second information. The radiation imaging system according to claim 13, wherein the control device requests the radiation imaging device to transmit the third information when an abnormality is detected in the second information, and transmits the second information and the third information to an outside of the radiation imaging system. The radiation imaging system according to claim 13 , wherein the control device transmits an imaging permission in response to an imaging request from the radiation imaging apparatus when there is no abnormality in the second information. A control device for controlling a radiation imaging system having a radiation imaging device that performs radiation imaging based on irradiated radiation,
The control device is characterized in that, in response to receiving second information, which is part of the first information regarding the radiation imaging device, transmitted from the radiation imaging device, the control device causes the radiation imaging device to transmit third information, which is part of the first information, and transmits the second information and the third information to an outside of the radiation imaging system. 1. A method for controlling a radiation imaging system having a radiation imaging apparatus that performs radiation imaging based on irradiated radiation, comprising:
a receiving step of receiving second information, which is a part of the first information related to the radiation imaging device, from the radiation imaging device;
a request step of requesting the radiation imaging apparatus to transmit third information, which is a part of the first information, based on the second information;
a transmitting step of transmitting the second information and the third information to an outside of the radiation imaging system. A program for causing a computer to execute the control method according to claim 17.

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