JP6478524B2 - Radiation imaging system, control method, and program - Google Patents

Description

The present invention relates to a radiation imaging system, control method, and a program.

  In recent years, digitization of radiation images such as X-ray images in medical treatment has been advanced. By digitizing the radiation image, for example, the captured radiation image can be immediately confirmed on the display unit. A radiation imaging apparatus that forms an image by converting radiation into an electrical signal by a plurality of radiation detection elements arranged in a two-dimensional matrix has been put into practical use and is rapidly spreading. In a radiation imaging apparatus, for example, minute radiation detectors (sensors) in which a solid light detection element and a scintillator that converts radiation into visible light are stacked are arranged in a two-dimensional matrix. The elements constituting the radiation detector (sensor) convert the irradiated radiation into an electric signal (charge) corresponding to the irradiation amount. In general, a radiation imaging apparatus can store charges generated by radiation irradiation in an element by controlling a voltage applied to the photoelectric conversion element. Thereafter, the charge is read from the element by controlling to another voltage, and a radiation image is formed according to the accumulated charge.

  For example, as in the radiation imaging system disclosed in Patent Document 1, there is a system that synchronizes radiation irradiation and imaging timing by exchanging synchronization signals between a radiation generation unit and a radiation imaging apparatus. Proposed. Further, in the radiation imaging system disclosed in Patent Document 2, the radiation irradiation timing is detected by detecting a change in current generated inside the radiation imaging apparatus when the radiation imaging apparatus is irradiated with radiation. ing. By starting radiation imaging using this irradiation timing as a trigger, the radiation irradiation and imaging timing can be synchronized.

Japanese Patent No. 4684747 Japanese Patent Laid-Open No. 11-155847

  In the case of a radiation imaging system in which the radiation generation unit and the radiation imaging apparatus are not synchronized, the radiation generation unit can generate radiation regardless of the state of the radiation imaging apparatus. However, when radiation is irradiated in a state where the radiation imaging apparatus is not ready, the image quality of the radiation image may be deteriorated due to the influence of the charge remaining on the radiation imaging apparatus due to the irradiated radiation. In addition, even if there is no problem with the image quality of the radiation image as described above, if the radiation imaging system does not irradiate radiation, such as information on the subject to be irradiated is not fixed, There is also the possibility of giving unnecessary radiation exposure.

  An object of the present invention is to reduce the number of unnecessary exposures to a subject caused by irradiation with radiation in a state where a radiation imaging system is not ready.

Therefore, the radiation system of the present invention is a radiation imaging system including a radiation imaging apparatus that detects radiation and captures a radiation image, and an imaging control apparatus that controls the radiation imaging apparatus, and the radiation imaging apparatus includes: A detection unit configured to detect radiation irradiation, wherein the imaging control device acquires detection information when radiation detection is detected by the detection unit during an imaging preparation period of the radiation imaging device; display control means for displaying on the display unit information based on the obtained detection information by means, possess, the detection information of the radiation imaging system when irradiated is detected during the imaging preparation period Including user identification information for identifying a user, wherein the display control means detects the number of radiation irradiations detected during the imaging preparation period based on the detection information The acquired from the user identification information for each user of the radiation imaging system is identified, said the number of detections in correspondence with said user, wherein the display list for the specified period.

  ADVANTAGE OF THE INVENTION According to this invention, the frequency | count of useless exposure with respect to the to-be-photographed object which arises by irradiating with a radiation in the state where the radiation imaging system is not ready can be reduced.

It is a figure which shows an example of a structure of a radiation imaging system. It is a figure which shows an example of a structure of a radiation imaging device. It is a figure which shows an example of the sensor in a radiation imaging device. It is a figure which shows an example of the state transition of a radiation imaging device. It is a flowchart which shows an example of the process after radiation detection. It is a flowchart which shows an example of a detection information notification process. It is a figure which shows an example of the message according to the frequency | count of detection of radiation irradiation. It is a flowchart which shows an example of the list display process which concerns on the detection of radiation irradiation. It is a figure which shows an example of the list screen of the radiation irradiation detection frequency. It is a figure which shows an example of the list screen of radiation irradiation detection time.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
<First Embodiment>
FIG. 1 is a diagram illustrating an example of the configuration of the radiation imaging system 10. The radiation imaging system 10 includes a radiation imaging apparatus 20 that detects radiation and captures a radiation image, and an imaging control apparatus 30 that controls the radiation imaging apparatus 20. The radiation imaging apparatus 20 includes a sensor (not shown) that detects radiation, and has a function of detecting radiation from the outside and capturing a radiation image.

  The radiation imaging apparatus 20 detects a radiation and obtains a radiation image, a radiation detection unit 201 that detects that the radiation imaging apparatus 20 is irradiated with radiation, and a state that manages the state of the radiation imaging apparatus 20 And a management unit 202. The irradiation detection unit 201 detects radiation irradiated from the outside. More specifically, the irradiation detection unit 201 detects the presence / absence of radiation irradiation based on information such as the charge and current amount of the photoelectric conversion element in the radiation imaging apparatus 20. For example, the irradiation detection unit 201 includes a determination circuit. The electric charge accumulated in the photoelectric conversion element is periodically output by the sensor drive circuit 211, the value of the electric signal obtained by the output is sampled at a predetermined rate, and the determination circuit sets the electric signal value to a predetermined threshold value. By determining whether or not it exceeds, X-ray irradiation is detected. The irradiation detection unit 201 according to another embodiment performs a determination using an X-ray detection unit such as a photomultiplier tube or an ion chamber other than the radiation sensor and a signal output from the X-ray detection unit, and the radiation And a determination unit that detects that the irradiation has been performed. When the radiation imaging apparatus 20 detects radiation irradiation in an imageable state, the radiation imaging apparatus 20 performs a radiation imaging process to generate a radiation image. The radiation imaging apparatus 20 sends the generated radiation image to the imaging control apparatus 30. Thereby, the imaging control apparatus 30 can perform storage or display of a radiation image. When the radiation imaging apparatus 20 detects radiation irradiation in the imaging preparation state (a state in which the radiation imaging apparatus 20 is not in an imaging enabled state), the radiation imaging apparatus 20 notifies the control communication unit 301 that radiation has been detected in the imaging preparation state. Details of the imaging preparation state will be described later. The state management unit 202 changes the state of the radiation imaging apparatus 20. The state of the radiation imaging apparatus 20 mainly includes an initialization state, an imaging preparation state, an imaging ready state, an imaging state, and the like. The state management unit 202 can change these states. Details will be described later.

  The imaging control device 30 includes a control communication unit 301 that controls the radiation imaging device 20 and communication of imaging information, an imaging information management unit 302 that manages imaging information, and a storage area (storage unit) of the radiation imaging system 10. ) And a display unit 304 for displaying imaging information including a captured image. The control communication unit 301 controls the radiation imaging apparatus 20 based on, for example, information received through operation of an operation unit (not shown) or information output from the radiation imaging apparatus 20. In addition, when the irradiation detection unit 201 detects radiation irradiation when the radiation imaging apparatus 20 is in the imaging preparation state, the control communication unit 301 receives notification from the state management unit 202 that radiation has been detected in the imaging preparation state, and displays Notification to the unit 304 and the imaging information management unit 302.

  The imaging information management unit 302 issues a storage instruction to the imaging information storage unit 303 so that the control communication unit 301 stores imaging information including a captured image obtained from the radiation imaging apparatus 20. The imaging information management unit 302 acquires imaging information via the imaging information storage unit 303 and transmits the imaging information to the display unit 304 in order to display imaging information such as images captured in the past on the display unit 304. . Further, when the radiation detection unit 201 detects radiation irradiation when the radiation imaging apparatus 20 is in the imaging preparation state, the imaging information management unit 302 acquires detection information in the imaging preparation state notified from the control communication unit 301. The imaging information storage unit 303 is instructed to store. Here, the detection information notified from the control communication unit 301 is, for example, Boolean type variable information indicating whether radiation irradiation is detected by 0 and 1, respectively. In this case, information on the time when the detection is performed may be included. Or it is signal values, such as an electric current value and a voltage value which are used for the irradiation detection part 201 to detect irradiation, and the data of the said signal value needs only to follow the time change of the said signal value. In this case, data obtained by combining the time when the signal value is obtained and the signal value may be used. In addition, when the login user ID information is stored in the radiation imaging apparatus 20 in the detection information as described above, the radiation imaging system 10 when the irradiation detection unit 201 detects radiation irradiation in the imaging preparation state. Information regarding the logged-in user and time (date and time) may be included. The login user ID information does not need to be stored in the radiation imaging apparatus 20, and in this case, the login user ID information stored in the imaging control apparatus 30 and X-ray irradiation indicated by the detection information is performed. Information of the login user ID at the same timing is used. It should be noted that strict timing management is not necessarily required, and the login user ID at the start of the shooting may be used. The imaging information storage unit 303 stores imaging information including a captured image according to an instruction from the imaging information management unit 302. In addition, the imaging information storage unit 303 acquires imaging information stored in accordance with an instruction from the imaging information management unit 302 and transmits the acquired imaging information to the imaging information management unit 302. The display unit 304 changes the display content according to an instruction from the control communication unit 301. The display unit 304 can also display shooting information acquired from the imaging information management unit 302. As described above, the display unit 304 controls display of information notified to the user in cooperation with the control communication unit 301 and the imaging information management unit 302.

  FIG. 2 is a diagram illustrating an example of the configuration of the radiation imaging apparatus 20. The radiation imaging apparatus 20 includes a sensor drive circuit 211 that mainly drives a sensor in the radiation imaging apparatus, an irradiation detection unit 201 that detects radiation irradiation, and an MPU 212 that controls the radiation imaging apparatus 20. Note that the MPU 212 can be expressed as a control circuit.

  FIG. 3 is a diagram illustrating an example of a sensor in the radiation imaging apparatus 20. The two-dimensional sensor imaging device 213 is composed of a plurality of pixels arranged on a matrix of m rows and xn columns. The two-dimensional sensor image sensor 213 has many pixels, for example, m = 2800 and n = 2800. Each pixel includes a phosphor that converts radiation into light in a wavelength band that can be sensed by the photoelectric conversion element, a photoelectric conversion element, and a switch element.

  The photoelectric conversion element generates and accumulates charges according to the amount of incident radiation. The radiation that has passed through the subject has a distribution that depends on the amount of transmitted radiation that varies depending on the structure and lesions such as bones and internal organs inside the subject. These structures are converted into a charge distribution and accumulated in the photoelectric conversion element. As photoelectric conversion elements, various elements using amorphous silicon or polysilicon are known in addition to CCDs. In the present embodiment, a MIS type photodiode mainly composed of amorphous silicon disposed on an insulating substrate such as a glass substrate is used as the photoelectric conversion element, but a PIN type photodiode may be used. In addition, a direct type conversion element that directly converts radiation into charges can also be suitably used. As the switch element, a transistor having a control terminal and two main terminals is preferably used. In this embodiment, a thin film transistor (TFT) is used.

  The pixels on the row on the two-dimensional sensor image sensor 213 are all addressed simultaneously by the sensor driving circuit 211, and the charge of each pixel on the row is held in the sample hold circuit 214. Thereafter, the held charge of the pixel output is sequentially read out through the multiplexer 218, amplified by the amplifier 215, and then converted into a digital value by the A / D converter 216. Each time scanning of each row is completed, the sensor driving circuit 211 sequentially scans the next row on the two-dimensional sensor image sensor 213 to scan, and finally, the charges of all pixel outputs are converted into digital values. The In this way, the image data of the radiation image is read out to the control communication unit 301.

  The power source 217 supplies power to each component. The power source 217 supplies a bias voltage to the G electrode of the photoelectric conversion element through the bias wiring, and outputs current information including a change in the amount of current supplied to the bias wiring. The current information is sent to the irradiation detection unit 201. The irradiation detection unit 201 detects radiation irradiation by capturing a change in the amount of current generated during radiation irradiation. When the radiation imaging apparatus 20 is in the imaging preparation state, the irradiation detection unit 201 notifies the control communication unit 301 of detection information in the imaging preparation state through the state management unit 202.

  FIG. 4 is a diagram illustrating an example of state transition of the radiation imaging apparatus 20 in the present embodiment. The state of the radiation imaging apparatus 20 mainly includes an initialization state, an imaging preparation state, an imaging ready state, and an imaging state. Step S201 indicates that the radiation imaging apparatus 20 is in an initialized state. The initialized state is a state in which the photoelectric conversion element on the two-dimensional sensor image sensor 213 of the radiation imaging apparatus 20 is initialized. That is, the initialization state is a state where voltage application to the electrode of the photoelectric conversion element is stopped, and is a so-called sleep state. When the control communication unit 301 notifies the radiation imaging apparatus 20 of a preparation start instruction, the process proceeds to step S202.

  Step S202 indicates that the radiation imaging apparatus 20 is in an imaging preparation state. The imaging preparation state is a state in which a predetermined time has elapsed from the start of imaging driving when the sensor driving circuit 211 executes imaging driving. The imaging preparation state is set in advance for 10 seconds, for example. The control communication unit 301 can arbitrarily set a predetermined time from the start of imaging driving. More specifically, the imaging preparation state is a state during the idle reading operation (refreshing operation) of the photoelectric conversion element in the radiation imaging apparatus 20. The idle reading operation is a driving in which the switch elements are turned ON in order from the first row (y = 0) to the last row (y = m), and the electric charge due to the dark current generated in the photoelectric conversion element is removed. Done for. The idle reading operation is an operation in which the reading operation is repeatedly performed a plurality of times during an idling period, which is a preparation stage before radiation imaging, and is an operation of reading image data having no radiation image. The idle reading operation is repeated at a constant period for a predetermined time until the imaging is enabled. The control communication unit 301 can arbitrarily set a predetermined time until the radiation imaging apparatus 20 is in an imageable state. When preparation for imaging is completed, the process proceeds to step S203. Moreover, it can also change to step S201 by the preparation stop instruction | indication of the control communication part 301.

  Step S203 indicates that the radiation imaging apparatus 20 is in an imageable state. The imaging enabled state is a state in which a predetermined time has elapsed since the start of imaging driving when the two-dimensional sensor imaging element 213 executes imaging driving. Moreover, the imaging possible state is a state in which an empty reading operation of the photoelectric conversion element in the radiation imaging apparatus 20 is performed for a predetermined time, and radiation can be captured. When radiation is irradiated in an imageable state, the charge read from the photoelectric conversion element increases. The irradiation detection unit 201 can detect that radiation irradiation has started by observing a change in the amount of current in the photoelectric conversion element. For example, the irradiation detection unit 201 detects the irradiation of radiation when the amount of current exceeds a predetermined threshold. Further, the irradiation detection unit 201 may detect radiation irradiation based on the total amount of charges in the photoelectric conversion element. When the radiation imaging apparatus 20 actually starts imaging, the process proceeds to step S204.

  Step S204 indicates that the radiation imaging apparatus 20 is in an imaging state. If the irradiation detection unit 201 detects the start of radiation irradiation when the radiation imaging apparatus 20 is in an imageable state, the idle reading operation is stopped at that time. Then, the operation shifts to an operation for accumulating electric charge, and an imaging state is entered. All switch elements are turned off during the charge accumulation. When the accumulation of charge is completed after a predetermined time has elapsed, the main reading is started. The main reading is performed by turning on the switch elements in order from the first row (y = 0) to the last row (y = m). As described above, when the radiation imaging apparatus 20 detects radiation irradiation in an imageable state, the radiation imaging apparatus 20 performs a radiation imaging process to generate a radiation image. The display unit 304 can display a radiation image.

  FIG. 5 is a flowchart illustrating an example of processing after the irradiation detection unit 201 detects radiation. In step S301, the irradiation detection unit 201 detects radiation irradiation, and the state management unit 202 determines whether the radiation imaging apparatus 20 is in an imaging preparation period. If it is the imaging preparation period, the process proceeds to step S302, and if it is a period during which imaging is possible other than the imaging preparation period, the process proceeds to step S306. In step S302, the state management unit 202 notifies the control communication unit 301 of information (detection information) indicating that the irradiation detection unit 201 has detected radiation irradiation during the imaging preparation period. After notification, the process proceeds to step S303.

  In step S <b> 303, the control communication unit 301 transmits detection information in the imaging preparation period acquired from the state management unit 202 to the imaging information management unit 302. Then, the imaging information management unit 302 instructs the imaging information storage unit 303 to store the time information (date information) when the irradiation detection unit 201 detects radiation irradiation during the imaging preparation period. After saving, the process proceeds to step S304. In step S304, the imaging information management unit 302 instructs the imaging information storage unit 303 to store information related to the login user name and login ID when the irradiation detection unit 201 detects radiation irradiation during the imaging preparation period. Here, the time information (date and time information) saved in S303 and the information related to the login user name and login ID saved in S304 are associated with each other. The login user name and the login ID are examples of user identification information that identifies the login user. After saving, the process proceeds to step S305. In step S <b> 305, the control communication unit 301 transmits detection information in the imaging preparation period to the display unit 304. Then, the display unit 304 executes processing for notifying the user of detection information. Details of the processing in step S305 will be described later with reference to FIG. In step S306, since the state management unit 202 determines in step S301 that it is a normal photographing possible period that is not the imaging preparation period, the photographing process is executed.

  FIG. 6 is a flowchart illustrating an example of processing for notifying the user of detection information by the display unit 304 after the radiation imaging apparatus 20 detects radiation irradiation by the irradiation detection unit 201 during the imaging preparation period. In step S401, the control communication unit 301 determines whether the login user is a normal user having a login ID. If it is a normal user, the process proceeds to step S402, and if it is a guest user who does not have a login ID, the process proceeds to step S404. That is, in step S401, the control communication unit 301 determines the type of login user. In step S402, the imaging information management unit 302 stores the number of times radiation irradiation is detected during the imaging preparation period while the logged-in user (normal user) currently using the radiation imaging system 10 is logged in the past. Obtained via the unit 303. More specifically, the imaging information management unit 302 acquires the number of times using the information stored in S304 each time radiation irradiation is detected in the imaging preparation period. After acquisition, the process proceeds to step S403.

  In step S403, the control communication unit 301 acquires message contents according to the number of detections of the imaging preparation period for a normal user as shown in FIG. After acquisition, the process proceeds to step S406. In step S <b> 404, the imaging information management unit 302 indicates, via the imaging information storage unit 303, the number of times radiation irradiation has been detected during the imaging preparation period while the guest user currently using the radiation imaging system 10 has logged in in the past. Get. More specifically, the imaging information management unit 302 acquires the number of times using the information stored in S304 each time radiation irradiation is detected in the imaging preparation period. After acquisition, the process proceeds to step S405. In step S405, the control communication unit 301 acquires message contents corresponding to the number of detections of the imaging preparation period for the guest user as shown in FIG. After acquisition, the process proceeds to step S406. In step S406, the display unit 304 displays the message content acquired in step S403 or step S405. In this way, the display unit 304 can change and display the display content of the message for each erroneous irradiation. Further, the display unit 304 can change and display the display content of the message according to the type of the logged-in user. Thereby, alerting to a user can be performed appropriately.

  FIG. 7 is a diagram illustrating an example of the content (login message) for each logged-in user according to the number of times of detection of radiation irradiation during the imaging preparation period. For example, for a normal user having a login ID, it is possible to change the contents of messages displayed by dividing each of them into three parts of 1 to 10 times, 11 to 30 times, 31 times or more. In addition, for example, for a guest user who does not have a login ID, it is possible to change the message content to be displayed by dividing into two parts of 31 times or more for 1 to 30 times. The number of detections used when changing the message content is not limited to the above number, and an arbitrary number can be set for each system. Further, the method of dividing the type of the login user is not limited to the above-described method of whether or not there is a login ID, and an arbitrary method can be set for each system. Also, the message content is not limited to the content shown in FIG. 7, and an arbitrary message can be set for each system.

  FIG. 8A is a flowchart illustrating an example of processing for displaying a list of the number of times of radiation irradiation detection based on detection of radiation irradiation during the imaging preparation period. In step S <b> 501, the display unit 304 acquires, from the imaging information storage unit 303 via the imaging information management unit 302, the number of radiation irradiation detections during the imaging preparation period for each login user. After acquisition, the process proceeds to step S502. In step S502, the display unit 304 displays a list of the number of detections of radiation irradiation for each login user in the imaging preparation period acquired in step S501. In this way, the display unit 304 can display a list of the number of erroneous irradiations for each login user. An example of the list display screen displayed by the display unit 304 is shown in FIG. In this embodiment, the display unit 304 displays a list of the past three months, but the period for which the list is displayed need not be limited to this.

  FIG. 8B is a flowchart illustrating an example of processing for displaying a list of radiation irradiation detection times based on detection of radiation irradiation during the imaging preparation period. In step S601, the display unit 304 sends time information (date / time information) when radiation irradiation is detected during the imaging preparation period from the imaging information storage unit 303 via the imaging information management unit 302, and the login user at that time. Get login ID. More specifically, the display unit 304 acquires the time information (date and time information) and the login ID by using the information stored in S303 and S304 each time radiation irradiation is detected during the imaging preparation period. To do. After acquisition, the process proceeds to step S602. Here, the login ID is acquired together with the time information when radiation irradiation is detected during the imaging preparation period. However, the acquired data may not be limited to the login ID. For example, the user name of the login user may be used. In step S602, the display unit 304 displays a list of the time information acquired in step S601 and the login ID in association with each other. As described above, the display unit 304 can display a list of times (date / time) of erroneous irradiation for each login user. An example of the list display screen displayed by the display unit 304 is shown in FIG. In this embodiment, the login user name or login ID is used to distinguish users. However, the present invention is not limited to this. For example, any information can be used as long as the information can identify a user such as an engineer name. Also good.

As in the present embodiment, if the radiation imaging apparatus 20 accidentally irradiates the radiation during the imaging preparation period, it is erroneously irradiated, and the display content of the message is changed for each number of erroneous irradiations. Therefore, it is possible to more appropriately alert the user. Further, by displaying a list of the number of times of erroneous irradiation as described above for each login user, the administrator can pay attention to each user.
In addition, for example, each user may share the login ID to use the radiation imaging apparatus 20, or a guest user who does not have a login ID may use the radiation imaging apparatus 20. In such a case, it is possible to determine the user who was used at the time of erroneous irradiation by storing the time information of erroneous irradiation and displaying a list later. In one embodiment, every time the user of the radiation imaging apparatus 20 changes, the imaging information management unit 302 receives information indicating that the user has changed by an operation input from the operation unit connected to the imaging control apparatus 30. The user identification information after the change is acquired. For example, the imaging information management unit 302 causes the display unit 304 to display a text box for inputting user identification information and a button for inputting information indicating that the user has been changed. Thereafter, user identification information is input to the text box by an operation input from the operation unit, and the button is pressed. In response to pressing of the button, the imaging information management unit 302 determines the user of the radiation imaging apparatus after the input until the next different user identification information and information indicating that the user has been changed. A user corresponding to the input user identification information is assumed. By doing in this way, it becomes possible to count the number of times of erroneous exposure not only for the logged-in user but for each user widely, and more detailed management can be realized.
In addition, when user identification information such as an engineer name is associated with each piece of photographing information indicating information related to one photographing such as a photographing part, the photographing information is selected for photographing, A system user is set by the imaging information management unit 302. Instead of associating user identification information with each piece of photographing information, user identification information may be associated with each piece of examination information including at least one piece of photographing information.
The user setting is set by the imaging information management unit 302 storing the current user information in the imaging information storage unit 303. By rewriting the current user information by the imaging information management unit 302, the current user information is reset, and is appropriately referred to by the imaging information management unit 302 when counting the number of erroneous exposures.

  As described above, by realizing a system that can alert the user of the radiation imaging system 10 or that the administrator can appropriately manage each user, at an incorrect timing. The number of times of radiation irradiation can be reduced.

<Other embodiments>
In one embodiment, some of the functions executed by the imaging control device 30 may be realized by the radiation imaging device 20. That is, the radiation imaging apparatus 20 receives the identification information of the user of the radiation imaging apparatus 20 or the radiation imaging system 10 through a communication circuit (not shown) that communicates with the imaging control apparatus 30. The irradiation detection unit 201 acquires information indicating that erroneous exposure in which no radiation is irradiated during the regular imaging period of the radiation sensor 200 has occurred based on the signal value obtained by the irradiation detection unit 201. Here, the information indicating that erroneous exposure has occurred is, for example, a Boolean variable value indicating whether or not erroneous exposure has occurred, as in the above-described embodiment. The MPU 212 associates the information acquired by the acquisition unit with the identification information of the user of the radiation imaging apparatus 20 when the erroneous exposure occurs, and stores the information in the memory in the radiation imaging apparatus 20. Further, the communication circuit described above transmits information indicating whether or not erroneous exposure has occurred and user identification information to the imaging control device 30.
In addition, regarding the transmission process, the radiation imaging apparatus 20 and the imaging control apparatus 30 do not necessarily have to be in direct communication, and may be transmitted via one or more repeaters. Alternatively, information output by the communication circuit in the repeater is temporarily stored, and the receiving imaging control device 30 requests the repeater at a predetermined timing, and is temporarily stored in response to the request. It also includes the case of receiving information.
Communication by the communication circuit may be performed wirelessly, wiredly, or both. When performing wireless communication, the communication circuit includes a wireless antenna, and when performing wired communication, includes a connector. The controller that controls communication may be a dedicated circuit, or the MPU 212 may also serve as its function.
An embodiment of the present invention supplies a program that realizes one or more functions of the above-described embodiments to a system or apparatus via a network or a storage medium, and one or more processors in a computer of the system or apparatus execute the program. Also included is a mode realized by a process of reading out and executing. Of course, it can also be realized by a circuit (for example, ASIC) that realizes one or more functions.

  As described above, according to each of the above-described embodiments, it is possible to reduce the number of useless exposures to a subject caused by irradiation with radiation when the radiation imaging system 10 is not ready.

  The preferred embodiment of the present invention has been described in detail above, but the present embodiment is not limited to the specific embodiment, and various modifications can be made within the scope of the gist of the present invention described in the claims.・ Change is possible.

DESCRIPTION OF SYMBOLS 10 Radiation imaging system, 20 Radiation imaging device, 30 Imaging control apparatus, 201 Irradiation detection part, 202 State management part, 301 Control communication part, 302 Imaging information management part, 303 Imaging information storage part, 304 Display part

Claims (5)

A radiation imaging system including a radiation imaging device that detects radiation and images a radiation image, and an imaging control device that controls the radiation imaging device,
The radiation imaging apparatus has detection means for detecting radiation irradiation,
The imaging control device includes:
An acquisition unit that acquires detection information when radiation detection is detected by the detection unit during an imaging preparation period of the radiation imaging apparatus;
Have a, a display control means for displaying on the display unit information based on the obtained detection information by the acquisition unit,
The detection information includes user identification information for identifying a user of the radiation imaging system when radiation irradiation is detected during the imaging preparation period,
The display control means acquires, based on the detection information, the number of detections of radiation irradiation during the imaging preparation period for each user of the radiation imaging system specified from the user identification information, and the number of detections and the user A radiation imaging system characterized by displaying a list for a specified period . Wherein the display control unit, a radiation imaging system according to claim 1, Ru to display different content of the warning message according to the type of user of the radiation imaging system is identified from the previous SL user identification information. The radiation imaging system according to claim 1, wherein the imaging control device includes a storage unit that stores the detection information. A radiation imaging apparatus for capturing a radiation image by detecting the radiation, a method of controlling a radiation imaging system including an imaging control device for controlling the radiation imaging apparatus,
A detection step in which the radiation imaging apparatus detects radiation irradiation;
An acquisition step in which the imaging control device acquires detection information when radiation irradiation is detected by the detection step during an imaging preparation period of the radiation imaging device;
The imaging control device, viewed contains and a display control step of displaying on the display unit information based on the obtained detection information by the acquisition step,
The detection information includes user identification information for identifying a user of the radiation imaging system when radiation irradiation is detected during the imaging preparation period,
In the display control step, based on the detection information, the number of detections of radiation irradiation during the imaging preparation period is acquired for each user of the radiation imaging system specified from the user identification information, and the number of detections and the user The control method is characterized in that a list is displayed for a specified period . A program for causing a computer to execute the control method according to claim 4 .

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