JP2015104638A - Radiographic device, radiographic system, radiographic device control method, control device, control device operation method and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control the drive of a radiation detection unit according to an imaging condition.SOLUTION: A radiographic device has a radiation detection unit that detects the radiation generated by a radiation generating unit. The radiographic device includes a storage unit that stores information on the imaging time required for past imaging operations, for each imaging condition, and a control unit that acquires information on the imaging time corresponding to a specified imaging condition, from the storage unit and controls the drive of the radiation detection unit.

Description

  The present invention relates to a radiation imaging apparatus, a radiation imaging system, a control method for the radiation imaging apparatus, a control apparatus, an operation method for the control apparatus, and a program.

  Conventionally, a radiographic imaging system using a radiation generator and a radiographic apparatus has been commercialized. In a radiographic imaging system, a radiation generating device irradiates a subject with radiation, and the radiographic imaging device digitizes a radiographic image that is the intensity distribution of the radiation that has passed through the subject, performs image processing on the digitized radiographic image, and produces a clear image. A radiographic image is generated.

  In such a radiographic imaging system, radiographic image data acquired by the radiographic apparatus is transferred to an image processing apparatus such as a control computer for image processing and storage. The image processing apparatus displays a radiographic image subjected to image processing on a display device such as a display. The radiation imaging apparatus includes a radiation detection unit configured by laminating a phosphor on a pixel including a photoelectric conversion element or the like. The radiation imaging apparatus converts the radiation detected by the radiation detection unit into visible light using a phosphor, holds visible light as electric charge, and generates a radiographic image from the read charge amount.

  In the conventional system, synchronous communication is performed between the radiation generator and the radiation imaging apparatus to synchronize the timing of radiation generation and imaging. However, in recent years, synchronous communication is not performed, and radiation is detected by the radiation imaging apparatus using a sensor. A method of taking a picture after detection has also been developed.

  Patent Document 1 discloses a method for preventing erroneous detection of radiation due to an impact by equipping a radiation imaging apparatus with a sensor for detecting movement such as an acceleration sensor and an angular velocity sensor as a configuration for preventing erroneous detection of the sensor. ing. Patent Document 2 discloses a technique related to heat generation and power saving of the radiation imaging apparatus.

JP 2012-1000080 A JP 2012-135525 A

  However, in the method of Patent Literature 1, when noise is detected, the function of the irradiation detection unit is invalidated. For this reason, when radiation is irradiated in a state where the function of the irradiation detection unit is disabled, the irradiation detection unit cannot detect the radiation and cannot generate a radiation image. Even when noise is no longer detected, the radiation imaging apparatus does not immediately become ready to radiate radiation, so during that time it is necessary to miss the imaging timing or wait until irradiation is possible. For this reason, the subject that the operativity of imaging | photography may be impaired may arise.

  In the method using the prediction signal of Patent Document 2, it can be considered that the positioning is completed when the fluctuation amount of the vibration value detected by the vibration detection unit 61 is equal to or less than a predetermined threshold value. However, when the fluctuation amount of the vibration value does not fall below the predetermined threshold value, a timeout of the radiation imaging apparatus occurs, and it is necessary to wait until the imaging timing is missed or irradiation is possible. In addition, there may be a problem that the operability of photographing is impaired.

  An object of the present invention is to provide a radiographic technique capable of controlling the driving of a radiation detection unit in accordance with an imaging condition.

A radiation imaging apparatus according to one aspect of the present invention that achieves the above object is a radiation imaging apparatus having radiation detection means for detecting radiation generated by the radiation generation means,
Storage means for storing the shooting condition and the timing information for transition to the shooting enabled state in association with each other;
Control means for causing the radiation detection means to transition to an imageable state based on the timing information corresponding to the designated imaging condition;
It is characterized by providing.

  A radiation imaging apparatus according to one aspect of the present invention that achieves the above object is a radiation imaging apparatus having radiation detection means for detecting radiation generated by radiation generation means, and relates to imaging time required for past imaging. A storage unit that stores information for each imaging condition; and a control unit that acquires information on the imaging time corresponding to the specified imaging condition from the storage unit and controls driving of the radiation detection unit. It is characterized by.

  A radiation imaging apparatus according to another aspect of the present invention is a radiation imaging apparatus including a radiation detection unit that detects radiation generated by a radiation generation unit, the detection unit detecting movement of the radiation detection unit, and the detection Control means for controlling the drive of the radiation detection means by comparing the detection result of the means and a threshold value corresponding to the imaging condition.

  A radiation imaging apparatus according to another aspect of the present invention is a radiation imaging apparatus including a radiation detection unit that detects radiation generated by a radiation generation unit, and information on imaging time required for past imaging is obtained for each imaging condition. A storage unit that stores information, a detection unit that detects movement of the radiation detection unit, and a radiographing time in which a radiographing time corresponding to a specified radiographing condition can be captured by the radiation detection unit. And a control unit that controls driving of the radiation detection unit by comparing a detection result of the detection unit with a threshold value corresponding to the imaging condition when a possible time is exceeded.

  According to the present invention, it is possible to control the driving of the radiation detection unit according to the imaging conditions.

The figure which shows the structural example of the radiography system concerning embodiment. The figure explaining the function composition of a radiography apparatus exemplarily. The figure explaining the flow of a process of the radiography apparatus of 1st Embodiment. The figure explaining the flow of a process of the radiography apparatus of 2nd Embodiment. The figure explaining the flow of a process of the radiography apparatus of 3rd Embodiment. The figure explaining imaging | photography statistical information exemplarily. The figure explaining imaging | photography statistical information exemplarily. FIG. 6 is a diagram for exemplarily explaining shooting statistical information when shooting a plurality of images. The figure explaining the repetition process of a ready cancellation | release process and a ready process. (A) is a figure which shows the structure of an X-ray detector, (b) is a figure which shows the hardware constitutions of a control apparatus. The figure explaining the screen display of an image display apparatus exemplarily.

  Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. However, the components described in this embodiment are merely examples, and the technical scope of the present invention is determined by the scope of the claims, and is not limited by the following individual embodiments. Absent.

(First embodiment)
FIG. 1 is a diagram illustrating a configuration example of a radiation imaging system according to an embodiment. The radiation imaging system includes a radiation imaging apparatus 100 and an image display apparatus 105. The radiation imaging apparatus 100 includes a radiation generation apparatus 101, an X-ray detector 102 (radiation detection unit) that detects radiation generated from the radiation generation apparatus 101, and a control apparatus 1103. The control device 1103 includes a control unit 103 that controls driving of the X-ray detector 102 and a console 104 (information processing device) having a user interface. Note that, as a radiation imaging system, the radiation imaging apparatus 100 may be referred to as a radiation imaging system.

  The console 104 controls the X-ray detector 102 via the control unit 103 by an application operating on the information processing apparatus. Image data detected by the X-ray detector 102 is sent to the console 104 via the control unit 103, and image processing is performed by the console 104. The control device 1103 controls the image display device 105 to display the image data after image processing on the image display device 105. The control device 1103 can output image data to an external device via the network 106.

  FIG. 10A is a diagram exemplarily showing the configuration of the X-ray detector 102. The X-ray detector 102 includes an X-ray image sensor 1010, a control unit 1011, a detection circuit 1012, a drive circuit 1013, a readout circuit 1014, a communication circuit 1015, a power supply 1016, and an acceleration sensor 1017. Yes.

  A power source 1016 supplies power to each component of the X-ray detector 102. The X-ray image sensor 1010 is, for example, a solid-state imaging device having a phosphor and a two-dimensional detection region.

  The control unit 1011 controls each unit of the X-ray detector 102 in an integrated manner. The detection circuit 1012 monitors the output of the X-ray image sensor 1010 and detects X-ray irradiation. The drive circuit 1013 drives the X-ray image sensor 1010 in an accumulation state or a readout state. For example, based on detection of X-ray irradiation by the detection circuit 1012, the control unit 1011 instructs the drive circuit 1013, and the drive circuit 1013 stores the X-ray image sensor 1010 in an accumulation state or a read state based on the instruction. Drive.

  The reading circuit 1014 reads a signal from the X-ray image sensor 1010 by the driving circuit 1013, amplifies the read signal, performs A / D conversion, and outputs X-ray image data. The X-ray image data is output to the control device 1103 via the communication circuit 1015.

  The acceleration sensor 1017 is a sensor that detects the movement of the X-ray detector 102, and acceleration information detected by the acceleration sensor 1017 is output to the control device 1103 via the communication circuit 1015. In the following description, an example of an acceleration sensor is described as a sensor that detects the movement of the X-ray detector 102, but the sensor that detects the movement of the X-ray detector 102 is not limited to the acceleration sensor 1017. For example, an angular acceleration sensor or a tilt sensor that detects the tilt angle of the X-ray detector 102 may be used.

  The communication circuit 1015 transmits the X-ray image data output from the readout circuit 1014 and the detection signal (acceleration information) of the acceleration sensor 1017 to the control device 1103 and receives the control signal from the control device 1103. The control unit 1011 controls the operation of each unit of the X-ray detector 102 according to the control signal received from the control device 1103. The control signal includes a control signal (state control signal) for controlling the X-ray image sensor 1010.

  FIG. 10B is a diagram exemplarily showing a hardware configuration of the control device 1103. The control device 1103 includes a CPU 1021, a RAM 1022, a ROM 1023, a hard disk drive (HDD) 1027, a communication interface (I / F) unit (NIC1 (1025), NIC2 (1026)), an HDMI (registered trademark) socket 1028, USB socket 1029 is provided. Each unit of the control device 1103 is connected to each other via a bus 1030.

  The CPU 1021 comprehensively controls the operation of the control device 1103 and controls each component shown in FIG. 10B via the bus 1030. The RAM 1022 functions as a main memory, work area, and the like for the CPU 1021. When executing the processing, the CPU 1021 loads a necessary shooting program (detector control module) or the like from the hard disk drive (HDD) 1027 into the RAM 1022 and executes the program or the like, thereby realizing various functional operations. Here, the imaging program (detector control module) can control the state transition of the X-ray detector 102 according to the result of analyzing the detection signal of the acceleration sensor 1017.

  The hard disk drive (HDD) 1027 stores a shooting program and the like necessary for the CPU 1021 to execute processing. For example, the hard disk drive (HDD) 1027 stores various data and various information necessary for the CPU 1021 to perform processing using a detector control module or the like. The detector control module stores, for example, various data and various information obtained by the CPU 1021 performing processing using the detector control module and the like. The imaging program (detector control module) may be stored in the ROM 1023.

  The communication I / F units (NIC1 (1025), NIC2 (1026)) are responsible for communication with the outside. NIC1 (1025) manages communication with the X-ray detector 102, and NIC1 (1025) detects the detection signal (acceleration information) of the acceleration sensor 1017 from the X-ray detector 102 and the X-ray output from the readout circuit 1014. Image data is received via the communication circuit 1015. Also, the NIC 1 (1025) transmits a control signal including a state control signal for controlling the X-ray image sensor 1010 such as the X-ray image sensor 1010 to the communication circuit 1015. The NIC 2 (1026) manages communication with the network 106, and outputs the X-ray image data received from the X-ray detector 102 to the outside via the network 106.

  The HDMI (registered trademark) socket 1028 (image signal output unit) outputs X-ray image data (video signal) to the image display device 105. The USB socket 1029 detects an operation signal input from the operation unit (touch panel) of the image display device 105. The detector control module generates a state control signal for the X-ray image sensor 1010 and the like based on the operation signal.

  The bus 1030 includes a CPU 1021, a RAM 1022, a ROM 1023, a hard disk drive (HDD) 1027, a communication interface (I / F) unit (NIC1 (1025), NIC2 (1026)), an HDMI (registered trademark) socket 1028, and a USB socket 1029. It is for connecting each part so that communication is possible.

  FIG. 2 is a diagram illustrating a functional configuration of the control device 1103 configured in cooperation with the detector control module, the control unit 103 (FIG. 1), and the CPU 1021. Each functional configuration is realized by the CPU 1021 developing and executing a program (detector control module) stored in the ROM 1023 or the hard disk drive (HDD) 1027 in the RAM 1022.

  The X-ray detector 102 is set with an imaging time in which radiation generated by the radiation generator 101 can be continuously detected (imaging). This image-capable time is a time set from the viewpoint of protecting the light receiving element of the sensor of the X-ray detector 102, power saving, heat generation, etc., when the image-taking is left without taking an image. The photographing possible time is time information that can be arbitrarily set. In the following description, the specific time is described using an example of 10 minutes, for example. Although it is possible to shoot within the shootable time after the ready state, which is a shootable state, when the shootable time has elapsed, the ready state is canceled and a not-ready state (standby state) is entered. Shooting cannot be performed in the not-ready state (standby state). In addition, in order to change the state from the not ready state (standby state) to the ready state (capable state for photographing), a predetermined state transition time (for example, a time of about 10 seconds) is required for image quality stabilization. This is called a ready transition time. The state transition time is arbitrarily settable time information, and in the following description, the specific time is described using an example of 10 seconds, for example. The above-described shooting possible time (10 minutes) and state transition time (10 seconds) are exemplary, and the gist of the present invention is not limited to this example, and can be arbitrarily set. Is possible.

  FIG. 2 is a block diagram illustrating an exemplary functional configuration of the control device 1103 of the radiation imaging apparatus 100. The functional configuration of the control device 1103 includes a ready determination unit 201, a control unit 103, a ready release determination unit 202, an imaging condition storage unit 203, an imaging statistics storage unit 204, an acceleration information storage unit 205, a ready timing determination unit 206, and an acceleration threshold determination. A section 207 and a database 208.

  The shooting statistic storage unit 204 stores and manages statistical information regarding shooting time (information regarding shooting time) required for past shooting for each shooting condition. Here, the imaging conditions include, for example, information related to imaging conditions indicating an imaging region, an imaging method, an imaging direction, and driving conditions (accumulation time, irradiation area) of the X-ray detector. The shooting statistics storage unit 204 stores and manages shooting information including shooting time as a shooting result. The control unit 103 acquires statistical information corresponding to the designated imaging condition from the imaging statistics storage unit 204 and controls driving of the X-ray detector 102. The ready timing determination unit 206 statistically determines the ready timing of the X-ray detector 102 from the imaging information stored and managed in the imaging statistics storage unit 204.

  The ready timing determined by the ready timing determining unit 206 is stored in the database 208 as a photographing condition. The shooting condition storage unit 203 stores and manages information stored in the database 208 as shooting conditions. The ready determination unit 201 determines whether to change the drive state from the X-ray detector 102 to the ready state using the ready timing stored and managed by the imaging condition storage unit 203.

  The acceleration information storage unit 205 stores and manages acceleration information output from the acceleration sensor 1017 of the X-ray detector 102 via the control unit 103.

  The acceleration threshold value determination unit 207 statistically determines the acceleration threshold value from the acceleration information stored and managed by the acceleration information storage unit 205. The acceleration threshold value determined by the acceleration threshold value determination unit 207 is stored in the database 208 as a photographing condition.

  The ready release determination unit 202 is driven to a not ready state (standby state) using the acceleration threshold value stored and managed by the shooting condition storage unit 203 as the shooting condition and the acceleration information output from the control unit 103. Decide to change.

  The control unit 103 controls the ready state (imaging ready state) and the not ready state (standby state) of the X-ray detector 102 based on the result determined by the ready determining unit 201 and the result determined by the ready release determining unit 202. To do. That is, the control unit 103 controls the change of the driving state from the not-ready state to the ready state, or the change of the driving state from the ready state to the not-ready state.

  Next, screen display (user interface) of the image display apparatus 105 will be described with reference to FIG. FIG. 11 is a diagram illustrating an example of a shooting control screen 1110 displayed on the image display apparatus 105 according to the present embodiment. The imaging control screen 1110 includes an image display area 1111, a status display area 1112, a patient information display area 1113, and an imaging condition display area 1114 in which imaging conditions can be selected.

  The image display area 1111 is an area for displaying (preview display) a captured X-ray image (radiation image). For example, the control device 1103 can display a still image in the image display area 1111 or reproduce a moving image as a preview display. A plurality of captured images can be displayed in parallel by display control of the control device 1103. Further, display of annotations such as patient information, examination information, and irradiation conditions can be performed by display control of the control device 1103. In the initial state immediately after the start of the inspection, no image is displayed.

  The status display area 1112 is an area for distinguishing and displaying colors and characters so that the operator can easily determine the status notified from the control device 1103 or the X-ray detector 102. Upon receiving the status notification indicating the state of the X-ray image sensor 1010 from the X-ray detector 102, the control device 1103 determines the display contents and transmits an instruction to switch the status display in the status display area 1112 to the image display device 105. To do.

  The examination is started when the imaging region of the subject and the X-ray detector are selected (FIG. 11A). Immediately after the start of the examination, the X-ray detector 102 is in an imaging preparation state, and the display in the status display area 1112 is Not Ready (display indicating the imaging preparation state: a not-ready state). If the X-ray image sensor 1010 of the X-ray detector 102 is not ready for imaging, the control device 1103 assumes that the state transition from the imaging ready state to the imaging ready state has not been completed. The image display device 105 is controlled so as to display “Not Ready (display indicating the imaging preparation state)”.

  The control device 1103 selects an uncaptured shooting condition displayed at the top of the plurality of shooting conditions displayed in the shooting condition display area 1114, and ready timing for shooting under the selected shooting condition. Confirmation and ready processing are executed. The control device 1103 displays a status display area when the X-ray detector 102 is capable of detecting radiation after a predetermined time has elapsed from the start of the inspection in S302 (ready timing confirmation) and S303 (ready processing) in FIG. Display control is performed to change the display on 1112 from “Not Ready” to “Ready (display indicating that the imaging preparation is completed: ready state)”. When it is necessary to change the sensor state for each shooting condition (for example, a shooting mode with a storage time of 500 ms and a shooting mode with 1000 ms), the control device 1103 selects an unshooted shooting condition to be selected according to each shooting condition. It is possible to change.

  When the state transition from the photographing preparation state to the photographing preparation completion state is completed, the image display device 105 displays “Ready (display indicating the photographing preparation completion state)” on the status display area 1112 by the display control of the control device 1103. For example, the background color is changed to a color that can be easily distinguished from the “Not Ready” display. As shown in FIG. 11B, the status display in the status display area 1112 is “Ready (display showing the imaging preparation completion state)”.

  1 shows one radiation generating apparatus 101 and one X-ray detector 102, a plurality of radiation generating apparatuses are used depending on imaging conditions such as a radiation generating apparatus to be used and a region to be imaged. The control device 1103 can control the display of the status display area 1112 according to the imaging preparation state based on the combination of the X-ray detector. The control device 1103 transmits a state control signal for changing the state from Not Ready state to Ready (state transition) to the X-ray detector 102, and a response signal indicating that the preparation for imaging is completed from the X-ray detector 102. Is changed from “Not Ready” to “Ready”. It takes time to reset the charge accumulated in the X-ray image sensor 1010 after the X-ray detector 102 receives the state control signal for state transition until the preparation for imaging is completed. For this reason, it takes a predetermined time to transition from “Not Ready” to “Ready”.

  The patient information display area 1113 is an area where patient information such as patient name, patient ID, date of birth, age, and sex is displayed.

  In the shooting condition display area 1114, shooting condition buttons corresponding to one or a plurality of shooting conditions are displayed. When the radiation imaging apparatus 100 is used in a hospital, a doctor usually sends an inspection order for designating an inspection site of the subject to an inspection engineer (operator) who operates the radiation imaging apparatus 100. The examination order includes information indicating imaging conditions including different combinations of the subject's imaging posture, imaging region, imaging direction, and the like necessary for the examination. The control device 1103 performs display control based on the inspection order so as to display an imaging condition button corresponding to the imaging condition. The examination order can be input to the radiation imaging apparatus via a hospital information system (HIS), a radiation information system (RIS), or the like.

  In FIG. 11, four shooting condition buttons are displayed in the shooting condition display area 1114. However, the present invention is not limited to this example, and shooting condition buttons corresponding to the inspection order are displayed. The control device 1103 can control the display order and display position of the shooting condition buttons in the shooting condition display area 1114. The screen of the image display device 105 can be configured as a touch panel, and the screen of the image display device 105 functions as a display unit and an operation input unit. In this case, on the screen of the image display device 105, the operator can select a shooting condition by selecting a button in the shooting condition display area 1114. If all the shooting condition buttons do not fit in the shooting condition display area 1114, the shooting condition buttons in the shooting condition display area 1114 can be scroll-displayed. In addition, the arrangement order of the shooting condition buttons displayed in the shooting condition display area 1114 can be changed by an operator's input. Such display control makes it possible to control display of shooting conditions required by the operator in accordance with an operation input of the operator within a limited display space in the shooting condition display area 1114.

  An imaging condition button 1115 a shown in FIG. 11 is an operation input button for imaging the imaging region A with the X-ray detector 1. The imaging condition button 1115 b is an operation input button for imaging the imaging region B with the X-ray detector 1. The imaging condition button 1115 c is an operation input button for imaging the imaging region C with the X-ray detector 2. The imaging condition button 1115d is an operation input button for imaging the imaging region D with the X-ray detector 3.

  In the screen of FIG. 11A, none of the shooting condition buttons is selected, but in the screen of FIG. 11B, the shooting condition button 1115a is selected. When the X-ray detector 102 can detect radiation by S302 (ready timing confirmation) and S303 (ready processing) in FIG. 3 to be described later, the display on the status display area 1112 changes from “Not Ready” to “Ready (imaging). The display is controlled to “display indicating the ready state”). In the display control from “Not Ready” to “Ready”, the operator directly selects the imaging condition button in addition to the case of using the determination result of the state transition by communication between the X-ray detector 102 and the control device 1103. You may go. For example, when the operator prepares the X-ray detector 102 and the imaging preparation of the imaging region is completed, the operator does not wait for a state transition due to communication between the X-ray detector 102 and the control device 1103. By directly selecting the photographing condition button, the status display can be switched from “Not Ready” to “Ready”. By such display control, it is possible to quickly perform photographing under the photographing conditions desired by the operator.

  Further, the control device 1103 performs display control so that the imaging condition buttons 1115a to 1115d and the thumbnail images 1116a to 1116d corresponding to the imaging regions are displayed in combination in the imaging condition display area 1114 of the image display device 105. As the thumbnail image, for example, when the imaging condition button 1115a is selected and imaging of the imaging region A is performed, a captured image thumbnail obtained by reducing the captured image of the imaging region A is displayed on the thumbnail image 1116a. In the example shown in FIG. 11B, a captured image is displayed in the image display area 1111 and a thumbnail image 1116a obtained by reducing the captured image displayed in the image display area 1111 is displayed.

  By displaying a captured image thumbnail that is a reduced display of the captured image with respect to the captured imaging conditions, the operator can easily confirm the captured image after capturing.

  Regarding the shooting conditions before shooting, the control device 1103 can perform display control so that the image display device 105 displays the scheduled shooting thumbnail. The control device 1103 can also perform display control so that thumbnail images are not displayed for shooting conditions before shooting. The control device can change the display control of the thumbnail image according to the setting.

  By displaying the shooting schedule thumbnail for shooting conditions before shooting, the operator can visually check the shooting contents when shooting. In addition, when the scheduled shooting thumbnail is not displayed, the display of the thumbnail image display column (for example, the thumbnail images 1116b to 1116d in FIG. 11B) is blank, so that the operator can set the shooting conditions that have not been shot. Can be easily identified.

  The separate inspection button 1118 is a button for instructing another inspection according to another inspection order. When the separate inspection button 1118 is selected, the photographing conditions and thumbnail display displayed in the photographing condition display area 1114 are reset, and the photographing conditions corresponding to the separate inspection order are displayed in the photographing condition display area 1114. The end button 1119 is a button for instructing the end of the inspection.

  Next, the flow of processing of the radiation imaging apparatus will be described with reference to the flowchart of FIG. First, inspection is started in step S301. A subject, a patient name, a patient ID (identification information), etc. are specified, imaging part information is selected, and the examination is started. This is because all the information necessary for shooting is specified. In another embodiment, the timing when the imaging program of the control device is activated is set as the start of the inspection. At this time, as shown in the screen of FIG. 11A, “Not Ready” (not ready state) indicating that the X-ray detector 102 is in the imaging preparation state is displayed on the status display area 1112.

  Here, the imaging part information is information for specifying which part of the subject is to be imaged. FIG. 6C is a diagram for associating the imaging region information with the imaging conditions (imaging position and acceleration threshold). As the imaging region information, for example, the chest front standing position, the abdominal front surface, etc. Classified by site. By selecting the imaging part information, the imaging condition can be specified. The imaging conditions include the radiation generation conditions of the radiation generator 101 and the driving conditions of the X-ray detector 102. However, the radiation generation condition may not be used as the imaging condition when the imaging is performed without synchronizing the timing with the radiation generation apparatus 101. There are two methods for classifying imaging methods: a method of classifying by a part and a method of classifying by a position. Here, the method of classifying by position is called photographing position information. The imaging position information represents a relative positional relationship between the radiation generation apparatus 101 and the X-ray detector 102 at the time of imaging.

  Next, in step S <b> 302, the control unit 103 confirms the ready timing of the X-ray detector 102. In the imaging region information, ready timing information is set as one piece of information on the driving condition of the X-ray detector 102. By selecting the imaging part information, the ready timing information set as a parameter in advance is read from the database 208. The imaging part information is stored in the database 208 in the radiation imaging system, and the imaging part information stored in the database 208 can be read by specifying the imaging part.

  The ready timing determination unit 206 determines the ready timing, but the user can also use a value preset as imaging information in advance as the ready timing according to the imaging region. When the ready timing information is determined, the ready timing determination unit 206 can determine the ready timing information using the shooting statistical information. The shooting statistics information is information stored and managed by the shooting statistics storage unit 204, and is information accumulated every time shooting is performed. The shooting statistics storage unit 204 stores time (shooting time) required from shooting start to shooting execution as information accumulated every time shooting is performed. Between the start of imaging and the execution of imaging, the subject is usually positioned, the imaging position is adjusted, and the relative positional relationship (opposite relationship) between the radiation generator 101 and the X-ray detector 102 is adjusted. X-ray collimation and adjustment of radiation generation conditions are performed.

  FIG. 7 is a diagram illustrating the shooting statistical information by way of example. FIG. 7A is a diagram illustrating a case where the start of imaging and the ready state (sensor ready) of the X-ray detector 102 are at the same timing, and the X-ray detector after the elapse of imaging time (for example, 10 minutes). 102 transitions from the ready state to the not ready state (sensor sleep). As an example, when imaging is performed by synchronizing the generation of radiation by the radiation generation apparatus 101 and the detection processing by the X-ray detector 102, the X-ray detector 102 is in a not-ready state, and therefore the radiation (X Line) does not occur. On the other hand, when imaging is performed asynchronously, radiation (X-rays) is generated even after the shootable time has elapsed, but the X-ray detector 102 is in a not-ready state, so X-ray detection is performed. I can't. In this case, false bombardment occurs.

  FIG. 7B is a diagram exemplifying a case where the sensor ready timing is delayed compared to the shooting start timing. In this case, since the timing of 701 is within the imaging time, the X-ray detector 102 can detect X-rays even in the case of synchronization or asynchronous.

  FIG. 7C is a diagram illustrating a case where the state transition time (ready transition time) is set using statistical information of past shooting for each shooting condition. The horizontal axis of 702 (histogram) indicates the time required in the past shooting, for example, the time required from the start of shooting to the execution of shooting, and the vertical axis indicates the number of past shootings, that is, the past shooting frequency. As the statistical information, in addition to the past photographing frequency, it is also possible to use a value of variance or standard deviation as a variation regarding photographing time in past photographing. These are collectively referred to as information relating to shooting time required for past shooting.

  The control unit 103 identifies the earliest shooting time required for past shooting for the specified shooting condition from the statistical information regarding the shooting time (703). Then, the control unit 103 determines a time (704) that is a predetermined time before the specified imaging time as a timing for changing the driving state of the X-ray detector 102.

  FIG. 6A is a diagram illustrating the shooting statistics information stored and managed by the shooting statistics storage unit 204. In FIG. 6A, the horizontal axis indicates the time taken from the start of shooting to the execution of shooting. The vertical axis indicates the frequency. In this example, 601 indicates the earliest shooting time from the start of shooting to the execution of shooting. Reference numeral 602 denotes a ready timing at which the X-ray detector 102 becomes ready for imaging. The ready timing determination unit 206 specifies the earliest shooting time 601 required for the past shooting for the specified shooting condition from the statistical information of the past shooting. Then, the ready timing determination unit 206 determines a set time that is a predetermined time before the shooting time as a ready timing for setting the ready state (capable of shooting).

  The ready timing determination unit 206 controls the setting of the ready timing using the shooting statistical information stored and managed by the shooting statistics storage unit 204. The ready timing determination unit 206 can also determine the ready timing by pattern recognition based on a frequency distribution prediction model, a neural network, or the like.

  As described above, as compared with the cases of FIGS. 7A and 7B, the probability of imaging within the imaging possible time of the X-ray detector 102 is increased by delaying the timing to start the imaging from the start of imaging (FIG. 7). 7 (c)).

  Depending on the type of examination, multiple images may be taken such as the front and side of the chest, the front, side, first oblique, second oblique, side forward bent, side back bent, and open position of the cervical spine. May be done. In such shooting, the shooting order is often determined as a shooting condition. In such a case, there is a difference in the work to be performed until shooting is performed between the first shooting and the second and subsequent shooting.

  FIG. 8 is a diagram for exemplarily explaining imaging statistical information when a plurality of imaging is performed for different imaging regions. For example, in the case of the first imaging (801 in FIG. 8), all of the positioning of the subject, the condition setting of the radiation generating apparatus 101, the adjustment of the positional relationship between the radiation generating apparatus 101 and the X-ray detector 102, etc. An operation must be performed. However, in the case of imaging for the second and subsequent images (802 in FIG. 8), there are cases where only the positioning of the subject is sufficient. As in 801 and 802 showing the frequency distribution in FIG. 8, the tendency of the frequency distribution chart is as follows when the shooting order is the first (first shooting) and after the second (shooting after the first shooting). It will be different.

  When a plurality of imaging operations are performed for different imaging regions, the imaging statistics storage unit 204 stores and manages statistical information regarding imaging time by dividing the first imaging and the imaging after the first imaging. When it is specified in the imaging conditions that a plurality of imaging is performed for different imaging sites, the control unit 103 acquires statistical information regarding imaging time from the imaging statistics storage unit 204 for the first imaging, and the X-ray detector The drive of 102 is controlled.

  The ready timing determination unit 206 controls the setting of the ready timing by separating the shooting statistics information stored and managed by the shooting statistics storage unit 204 from the first shooting order and the second and subsequent shooting statistics information. Is possible. The start of imaging in such a case means that the start of the inspection is the start of the first image and the second image is started immediately after the end of the first image. In this case, the time from the start of photographing to photographing can be classified according to the type of examination and the order of photographing. Therefore, the ready timing determination unit 206 can determine the ready timing using the statistical data based on the pattern of the combination of the type of examination and the imaging order in the examination, that is, the imaging part information, as the imaging statistical information.

  FIG. 6B is a diagram exemplifying shooting statistics information stored and managed by the shooting statistics storage unit 204. In FIG. 6B, 604 indicates statistical information (frequency distribution) from the start of shooting to the shooting when the shooting order is the first, and 603 indicates statistics from the start of shooting to the shooting when the shooting order is the second or later. Indicates information (frequency distribution). In this way, even with the same imaging region information, the imaging statistical information can be further separated according to the type of examination and the imaging order within the examination. By doing so, the variation in time from the start of imaging to imaging is further statistically eliminated, so that the probability of imaging within the imaging possible time of the X-ray detector 102 increases.

  Returning to FIG. 3, in step S303, the control unit 103 controls the ready determination unit 201 to execute ready processing. As a result, the X-ray detector 102 enters a ready state. The ready determination unit 201 determines whether to change the drive state from the X-ray detector 102 to the ready state using the ready timing stored and managed by the imaging condition storage unit 203. As described above, the timer of the radiation imaging apparatus starts measuring time from the start of the inspection in step S301. When the ready timing time confirmed in step S302 elapses, the ready determination unit 201 determines to change the state of the X-ray detector 102 to the ready state. In response to this determination, the control unit 103 issues a ready control instruction to the X-ray detector 102. Receiving the ready control instruction, the X-ray detector 102 transitions from the not ready state to the ready state. The ready state is entered after a predetermined state transition time has elapsed. At this time, as shown in the screen of FIG. 11B, “Ready” (ready state) indicating that the X-ray detector 102 is ready for imaging is displayed on the status display area 1112. At this stage, the image display area 1111 and the thumbnail images 1116a to 1116d are displayed in the state shown in FIG.

  Here, the control unit 103 starts counting the time with a timer from the start of the examination, and uses the time until the X-ray is detected as statistical information. In addition, when performing a plurality of imaging during the examination, the timer 103 is started immediately after the previous imaging is completed, and the control unit 103 transfers to the X-ray detector 102 when the ready timing time possessed by the imaging conditions for the next imaging has elapsed. A ready control instruction is issued. During the inspection, the interruption process is performed for some reason, and even when the interrupted process is resumed, the control unit 103 instructs the X-ray detector 102 to perform the ready control when the ready timing time has elapsed.

  In step S303, display control from “Not Ready” to “Ready” is performed based on a determination result of state transition by communication between the X-ray detector 102 and the control device 1103. The display control of the control unit 103 is not limited to this example, and the status display can be switched from “Not Ready” (not ready state) to “Ready” (ready state) when the operator selects the photographing condition button 1115a. Is possible.

  After the X-ray detector 102 is ready, imaging is performed in step S304. The control unit 103 performs synchronization processing of imaging between the radiation generation apparatus 101 and the X-ray detector 102, and controls the X-ray detector 102 to perform imaging during the imaging possible time of the X-ray detector 102. To do. When imaging is performed in step S304, the control unit 103 acquires X-ray image data from the X-ray detector 102 and causes the image display device 105 to display a captured image based on the X-ray image data (FIG. 11B). )).

  Next, the information captured in step S305 is stored. The timer started in step S301 counts the time until shooting in step S304. The imaging statistic storage unit 204 stores and manages the time from the start of imaging to imaging in association with the imaging site information. The imaging statistics storage unit 204 also stores and manages the type of examination and the imaging order of the imaging site information within the examination as imaging information.

(Second Embodiment)
Next, a radiographic imaging apparatus according to the second embodiment will be described. The basic configuration of the radiation imaging apparatus is the same as that shown in FIGS. 1 and 2 described in the first embodiment. The radiation imaging apparatus according to the present embodiment controls driving of the X-ray detector 102 by comparing a detection unit that detects the movement of the X-ray detector 102 and a detection result of the detection unit and a threshold corresponding to the imaging condition. And a control unit 103.

  A processing flow of the radiation imaging apparatus according to the second embodiment will be described with reference to the flowchart of FIG. First, inspection is started in step S401. This process is the same as step S301. Next, in step S <b> 402, the control unit 103 confirms the ready timing of the X-ray detector 102. This process is the same as step S302.

  Next, in step S <b> 403, the control unit 103 confirms acceleration information output from the acceleration sensor 1017 of the X-ray detector 102. The process in this step is a process in which the timer is started from the start of the inspection in step S401, and the acceleration information confirmation process is executed when the ready timing time in step S402 elapses. Here, the acceleration information is an output value of the acceleration sensor 1017 provided in the X-ray detector 102. The output timing of the acceleration information is output from the acceleration sensor 1017 of the X-ray detector 102 in real time or periodically. The acceleration information storage unit 205 stores and manages acceleration information output from the acceleration sensor 1017 via the control unit 103. The acceleration information storage unit 205 stores acceleration information on the database 208.

  Next, in step S404, the control unit 103 reads the acceleration information and the acceleration threshold value from the database 208 via the imaging condition storage unit 203, and compares the acceleration information and the acceleration threshold value. Here, the acceleration threshold value determination unit 207 determines the acceleration threshold value by statistical processing from the acceleration information stored in the acceleration information storage unit 205 and managed. The acceleration threshold value determined here is stored in the database 208 as an imaging condition. A predetermined value can be used as the acceleration threshold value. The acceleration threshold is stored in the database 208 in a state associated with the imaging part information. For example, the corresponding acceleration threshold value can be identified and read from the database 208 by selecting the imaging part information.

  The acceleration information to be compared with the acceleration threshold may be any one of the acceleration information in the three-axis directions (X-axis, Y-axis, Z-axis), or each acceleration information in the three-axis directions. May be compared. Further, depending on the sampling interval of the acceleration information output of the acceleration sensor 1017 of the X-ray detector 102, the most recent output value may be used, or the average value of the past several times of output values may be used. And may be the result of calculation with different weights.

  If it is determined in step S404 that the acceleration threshold value is smaller than the acceleration information (S404-No), the control unit 103 again waits for output of acceleration information from the acceleration sensor 1017 of the X-ray detector 102 and is output. The acceleration information is confirmed (step S403). The control unit 103 confirms acceleration information output from the acceleration sensor 1017 of the X-ray detector 102.

  Here, the fact that the acceleration threshold is smaller than the acceleration information means that the movement of the X-ray detector 102 exceeds the movement defined by the allowable acceleration threshold. The ready determining unit 201 determines that the X-ray detector 102 is moving for some reason, and does not proceed to the ready process in step S405.

  The reason why the X-ray detector 102 moves is, for example, when the X-ray detector 102 must be moved for positioning the human body, or for adjusting the facing relationship between the X-ray detector 102 and the radiation generating apparatus 101. The case where it moves is considered.

  The acceleration information is compared with the acceleration threshold of the imaging information. If the acceleration threshold is equal to or greater than the acceleration information (greater than the detection result of the X-ray detector 102) (S404-Yes), the process proceeds to step S405, and the control unit 103 Controls the ready determination unit 201 to execute ready processing. As a result, the X-ray detector 102 enters a ready state. The ready determination unit 201 determines whether to change the drive state from the X-ray detector 102 to the ready state using the ready timing stored and managed by the imaging condition storage unit 203.

  Next, photographing is performed in step S406. This process is the same as step S304. Although the imaging synchronization processing is not performed between the radiation generation apparatus 101 and the X-ray detector 102, the X-ray detector 102 can perform imaging during the imaging possible time. Next, the information captured in step S406 is stored. This operation is the same as step S305.

  On the other hand, in step S <b> 408, the control unit 103 confirms acceleration information output from the acceleration sensor 1017 of the X-ray detector 102. The acceleration information itself is the same information as in step S403.

  Next, acceleration information and an acceleration threshold value are preserve | saved at step S409. The information to be stored here is the acceleration information output from the acceleration sensor 1017 of the X-ray detector 102 in step S408 and the acceleration threshold value determined by the acceleration threshold value determination unit 207.

  The acceleration information stores information output from the acceleration sensor 1017 of the X-ray detector 102 from the start of imaging to imaging as it is. As a result, the movement detected by the X-ray detector 102 between the start of imaging and the imaging is stored. By having a plurality of these pieces of information, the movement of the X-ray detector 102 can be statistically managed. Note that as long as it is only necessary to provide information before and after the generation of radiation as information, information corresponding to only that period may be stored.

  The storage location of the acceleration information is basically stored in association with the imaging region information. That is, if the imaging region is specified, the output value of acceleration information from the acceleration sensor 1017 of the X-ray detector 102 in the past imaging at the same region can be grasped. The information classification may be stored in relation to the position information. For example, in the case where imaging of the standing position of the chest and imaging of the standing position of the abdomen are performed, the acceleration information is stored in association with the imaging part information of the standing position of the chest and the abdomen, respectively. On the other hand, since both are photographing positions of standing, it is possible to make reference possible with a keyword of standing. As a result, statistical information at the imaging region and statistical information at the imaging position are obtained.

  As the acceleration threshold information, a value determined by the acceleration threshold determination unit 207 is stored. Depending on the imaging region, a preset value may be determined as the acceleration threshold according to the setting of the user of the radiation imaging apparatus.

  On the other hand, the acceleration threshold information may be a value determined using statistical data of acceleration information. You may determine with the average value or the maximum value of the acceleration information before and behind X-ray irradiation at the time of imaging | photography with the same imaging | photography site | part. Alternatively, the acceleration threshold value may be determined by pattern recognition based on a prediction model or a neural network. The amount of data handled before and after the X-ray irradiation is calculated from the sampling interval of the acceleration information output of the X-ray detector. For example, when the sampling interval is 1 second, it is determined using several pieces of data before photographing and at least one piece of data after photographing as statistical information.

  In addition, although the acceleration threshold value has used the statistical information of the same imaging | photography site | part, you may determine regarding the same imaging | photography position information. For example, it is assumed that there is a type in which an X-ray detector is imaged on a table top as an imaging position, although the imaging region is different. In this case, the X-ray detector 102 rarely detects movement when it is placed on the table top. In some cases, such as shoulder joint axial photography or patella axial photography, the subject may take a picture while holding the X-ray detector 102 by hand. In this case, since the X-ray detector 102 is in an unstable position state, there is a high possibility that the movement of the X-ray detector 102 is detected. As described above, in such a case, even if the imaging region is different, since it is effective information as imaging statistical information having the same imaging position, it can be used as data when determining the acceleration threshold value. is there. Of course, the acceleration threshold value determined there may be a determined value for the imaging region information used as statistical information. In this way, the acceleration threshold value is determined and stored.

  Next, in step S410, it is determined whether or not the photographing is finished. The acceleration information output by the acceleration sensor 1017 of the X-ray detector 102 may be stored until the end of imaging, or the acceleration information may be stopped when imaging is performed. In addition, if there is unnecessary data as statistical information at the time of shooting, it may be deleted.

(Third embodiment)
Next, a radiation imaging apparatus according to the third embodiment will be described. The basic configuration of the radiation imaging apparatus is the same as that shown in FIGS. 1 and 2 described in the first embodiment. The radiation imaging apparatus of the present embodiment stores statistical information of past imaging for each imaging condition and manages the storage unit (imaging statistics storage unit 204), a detection unit that detects the movement of the X-ray detector 102, Is provided. In addition, when the radiographic apparatus has information on the imaging time corresponding to the specified imaging condition out of the statistical information of the past imaging exceeding the possible imaging time that can be imaged by the X-ray detector 102, the X-ray The detection result of the detector 102 is compared with the threshold value corresponding to the imaging condition. Then, the radiation imaging apparatus controls driving of the X-ray detector 102 based on the comparison result.

  A processing flow of the radiation imaging apparatus according to the third embodiment will be described with reference to the flowchart of FIG. Steps S501 to S505 are the same as steps S410 to S405 of FIG. 4 described in the second embodiment.

  In step S506, the control unit 103 determines whether the shooting statistical information indicating the time is within the shooting possible time. This processing is derived from the restriction of the time condition that the imaging possible time after the X-ray detector 102 is in the ready state in which imaging is possible is a preset time (for example, 10 minutes). The ready process in step S303 of the first embodiment and step S405 of the second embodiment causes the X-ray detector 102 to enter a radiographable state (ready state) in which radiation can be detected. If the time from the ready state to the imaging is within an imaging time (for example, 10 minutes), the X-ray detector 102 can execute imaging without timing out. However, when the time from the ready state to imaging exceeds the imaging time, the X-ray detector 102 times out, and imaging cannot be performed (imaging impossible state). As a process for preventing the shooting from being disabled due to a time-out, a repeated process of repeating the ready release process and the ready process will be described with reference to FIG.

  FIG. 9 is a diagram illustrating a repetition process of the ready release process and the ready process. In FIG. 9, reference numeral 910 denotes a frequency distribution diagram (histogram). The horizontal axis indicates the time required from the start of shooting to the execution of shooting, and the vertical axis indicates the number of times, that is, the frequency. 920 indicates an average output value of the acceleration sensor 1017, 930 indicates an output value of the acceleration sensor 1017, and 940 indicates an acceleration threshold value.

  When the shooting is disabled due to a timeout, even if the ready process is executed again, the state transition from the not ready state (standby state) to the ready state where the shooting can be performed takes a predetermined state transition time to stabilize the image quality. Is required, so that the photographing is impossible. Therefore, it is preferable to prevent the shooting from being disabled due to timeout.

  The control unit 103 repeatedly performs the ready release process and the ready process at a predetermined interval (for example, one minute interval) after entering the ready state in order to prevent the shooting from being disabled due to timeout. Thereby, as shown in FIGS. 7C and 8, the start timing of the imageable time (for example, 10 minutes) can be delayed as compared with the case where the repetition process is not performed. For example, when the output value of the acceleration sensor 1017 exceeds the acceleration threshold value, the ready release process and the ready process are repeatedly performed to delay the start timing of the shootable time (for example, 10 minutes). When the output value of the acceleration sensor 1017 is equal to or less than the acceleration threshold value, the ready process (901 in FIG. 9) is performed at the end of the repetition process, and the state of the X-ray detector 102 is changed to the imaging enabled state. In this way, it is possible to perform shooting while ensuring the maximum possible shooting time (for example, 10 minutes) in a state where the output value of the acceleration sensor 1017 is equal to or less than the acceleration threshold.

  The ready timing determination unit 206 checks the statistical data of the time from the start of imaging to the imaging and the ready timing from the statistical information of the imaging region to be imaged, which is stored and managed by the imaging statistics storage unit 204.

  The time obtained by subtracting the ready timing from the time from the start of inspection to the photographing is a statistical variation in the photographing time required for photographing. It is determined whether or not this variation is a shooting that exceeds the shooting possible time (for example, 10 minutes).

  Statistically, in the case of imaging where the time from ready to imaging may exceed 10 minutes, the X-ray detector may become in a not-ready state on the way. In addition, it is effective to carry out this determination process in advance prior to shooting.

  In step S506, the control unit 103 determines whether or not the shooting statistical information is within the shooting possible time. If the shooting statistical information is within the shooting enabled time (S506-Yes), the process proceeds to step S507. On the other hand, if the result of the determination process in step S506 is that the shooting statistical information exceeds the available shooting time (S506-No), the process proceeds to step S512.

  In step S512, the control unit 103 confirms acceleration information output from the acceleration sensor 1017 of the X-ray detector 102. The acceleration information itself is information notified through the same information transmission path as in step S503.

  In step S513, the control unit 103 compares the acceleration information with the acceleration threshold. The size comparison process is the same as step S504. As a result of the size comparison, if the acceleration information is less than or equal to the acceleration threshold value (S513-No), there is a possibility that the preparation for photographing has been completed, so the process of step S512 is performed again without proceeding to step S514. Thereafter, the acceleration information confirmation (S512) and the size comparison determination process (S513) are repeated until the image is taken. Here, the confirmation frequency of the acceleration information can be performed according to the sampling interval from the acceleration sensor 1017 of the X-ray detector 102, for example, but is not limited to this sampling interval.

  In step S512 and step S513, if shooting is performed, the process immediately proceeds to step S507. The processes in steps S507 and S508 are the same as the processes in steps S406 and S407, respectively.

  As a result of the size comparison in step S513, if the acceleration information is larger than the acceleration threshold value (S513-Yes), the control unit 103 determines that imaging preparation is still in progress, controls the ready release determination unit 202, and performs step S514. Perform ready release processing.

  In step S514, the ready release determination unit 202 releases the ready state of the X-ray detector. As a result, the X-ray detector becomes incapable of imaging. Next, the process proceeds to step S505, and in step S505, the control unit 103 controls the ready determination unit 201 to execute ready processing. As a result, the X-ray detector 102 enters a ready state.

  In step S506, the control unit 103 determines whether the shooting statistical information indicating the time is within the shooting possible time. If it is determined in step S506 that the shooting statistical information exceeds the available shooting time again (S506-No), the process proceeds to step S512, and the same process is repeated. The repetition of the ready process and the ready release process corresponds to the repetition process described with reference to FIG.

  On the other hand, when the shooting statistical information is within the shooting possible time (S506-Yes), shooting is performed in step S507. This process is the same as step S304 and step S406. Although the imaging synchronization processing is not performed between the radiation generation apparatus 101 and the X-ray detector 102, the X-ray detector 102 can perform imaging during the imaging possible time.

  In step S508, the photographed information is stored. This operation is the same as steps S305 and S407.

  Further, Step S509, Step S510, and Step S511 are the same as Step S408, Step S409, and Step S410 described in FIG.

  In each of the above embodiments, the processing using the acceleration information output from the acceleration sensor 1017 is described as an example. However, the gist of the present invention is not limited to this example. For example, instead of the acceleration sensor, an angular velocity sensor or other sensors that detect movement and inclination may be used. In addition, the limitation that the imaging time is 10 minutes for timeout of the X-ray detector 102, power saving, heat generation, and image quality stabilization has been described as an example, but this time can be changed by setting. For example, when priority is given to shooting action over power saving, heat generation, and image quality, it is possible to remove the restriction of 10 minutes as a possible shooting time, and in this case, the ready release processing is not performed.

(Other embodiments)
The present invention can also be realized by executing the following processing. That is, software (program) that realizes the functions of the above-described embodiments is supplied to a system or apparatus via a network or various storage media, and a computer (or CPU, MPU, or the like) of the system or apparatus reads the program. It is a process to be executed.

Claims (32)

A radiographic apparatus having radiation detection means for detecting radiation generated by the radiation generation means,
Storage means for storing the shooting condition and the timing information for transition to the shooting enabled state in association with each other;
Control means for causing the radiation detection means to transition to an imageable state based on the timing information corresponding to the designated imaging condition;
A radiation imaging apparatus comprising: A radiographic apparatus having radiation detection means for detecting radiation generated by the radiation generation means,
Storage means for storing information on shooting time required for past shooting for each shooting condition;
Control means for acquiring information on the imaging time corresponding to the specified imaging condition from the storage means, and controlling driving of the radiation detection means;
A radiation imaging apparatus comprising:   The control means sets the timing for changing the driving state of the radiation detection means from a standby state in which the radiation detection means cannot detect radiation to a radiographable state in which radiation detection is possible. The radiation imaging apparatus according to claim 2, wherein the radiation imaging apparatus is determined using information on the information.   The radiographic apparatus according to claim 2 or 3, wherein the information related to the imaging time includes frequency distribution information indicating a frequency of variation related to the imaging time required in past imaging.   The control means specifies the earliest shooting time required in the past shooting for the specified shooting condition from the information related to the shooting time, and sets a time before the specified shooting time as the driving state. The radiographic apparatus according to claim 3, wherein the timing is determined as a timing to change the value.   The storage unit stores information on the imaging time by dividing the first imaging and the imaging after the first imaging when a plurality of imaging is performed on different imaging regions. The radiation imaging apparatus according to any one of claims 1 to 5.   When it is specified that a plurality of imagings are performed for different imaging sites in the imaging conditions, the control unit acquires information on the imaging time for the first imaging from the storage unit, and drives the radiation detection unit The radiation imaging apparatus according to claim 6, wherein: A radiographic apparatus having radiation detection means for detecting radiation generated by the radiation generation means,
Detecting means for detecting movement of the radiation detecting means;
A control means for controlling the driving of the radiation detection means by comparing the detection result of the detection means with a threshold corresponding to the imaging condition;
A radiation imaging apparatus comprising: The control means includes
When the threshold value corresponding to the photographing condition is equal to or greater than the detection result of the detection unit,
9. The drive of the radiation detection unit is controlled so as to change from a standby state in which radiation detection cannot be performed by the radiation detection unit to an imaging ready state in which radiation can be detected. The radiation imaging apparatus described. Storage means for storing information on detection results of the detection means in past photographing for each photographing condition;
Threshold value determining means for determining a threshold value corresponding to the imaging condition using information on the detection result stored in the storage means;
Further comprising
The control means controls the driving of the radiation detection means by comparing the threshold value determined by the threshold value determination means with a detection result detected by the detection means when performing imaging under the imaging conditions. The radiation imaging apparatus according to claim 8, wherein the radiation imaging apparatus is characterized.   The radiation imaging apparatus according to claim 10, wherein the threshold value determination unit determines the threshold value using an average value or a maximum value of the information of the detection results stored in the storage unit. A radiographic apparatus having radiation detection means for detecting radiation generated by the radiation generation means,
Storage means for storing information on shooting time required for past shooting for each shooting condition;
Detecting means for detecting movement of the radiation detecting means;
Corresponding to the detection result of the detection means and the imaging condition when the imaging time corresponding to the specified imaging condition exceeds the possible imaging time that can be imaged by the radiation detection means among the information on the imaging time Control means for controlling the drive of the radiation detection means by comparison with the threshold value
A radiation imaging apparatus comprising: The control means includes
When the threshold value corresponding to the imaging condition is equal to or greater than the detection result of the detection unit, the radiographing unit is brought into a radiographable state where radiation can be detected from a standby state where the radiation detection unit cannot detect the radiation. To control the drive of the radiation detection means,
13. The radiation according to claim 12, wherein, in the information related to the imaging time, when the imaging time corresponding to the specified imaging condition is within the imaging time, the execution of imaging by the radiation detection unit is controlled. Shooting device. The control means includes
Of the past imaging information, the information of the imaging time corresponding to the specified imaging condition exceeds the possible imaging time that can be imaged by the radiation detection means, and further the detection output from the detection means If the result exceeds the threshold corresponding to the shooting conditions,
The radiation imaging apparatus according to claim 13, wherein driving of the radiation detection unit is controlled so as to enter a standby state where radiation cannot be detected from the imaging enabled state. A radiation imaging system comprising the radiation imaging apparatus according to claim 1. A radiation imaging apparatus control method comprising: a radiation detection means for detecting radiation generated by the radiation generation means; and a storage means for storing an imaging condition and timing information for transition to an imaging enabled state in association with each other,
A control method for a radiation imaging apparatus, comprising: a control step in which the control means of the radiation imaging apparatus transitions the radiation detection means to an imaging enabled state based on the timing information corresponding to a specified imaging condition. . A radiation imaging apparatus control method comprising: radiation detection means for detecting radiation generated by the radiation generation means; and storage means for storing information on imaging time required for past imaging for each imaging condition,
Radiation comprising: a control step in which the control means of the radiation imaging apparatus acquires information on the imaging time corresponding to a specified imaging condition from the storage means and controls the driving of the radiation detection means. Control method of photographing apparatus. A method for controlling a radiation imaging apparatus, comprising: a radiation detection means for detecting radiation generated by the radiation generation means; and a detection means for detecting movement of the radiation detection means,
Control of the radiation imaging apparatus, wherein the control means of the radiation imaging apparatus has a control step of controlling driving of the radiation detection means by comparing a detection result of the detection means and a threshold value corresponding to imaging conditions. Method. Radiation detection means for detecting radiation generated by the radiation generation means, storage means for storing information on imaging time required for past imaging for each imaging condition, and detection means for detecting movement of the radiation detection means A method for controlling a radiation imaging apparatus comprising:
The control means of the radiation imaging apparatus includes the detection means when the imaging time corresponding to the specified imaging condition out of the information related to the imaging time exceeds the imaging possible time that can be imaged by the radiation detection means. A control step of controlling the driving of the radiation detecting means by comparing the detection result with a threshold value corresponding to the imaging condition.   The program for functioning a computer as each means of the radiography apparatus of any one of Claims 1 thru | or 14. A control device for controlling a radiation imaging apparatus having a radiation detection means for detecting radiation generated by the radiation generation means,
Storage means for storing the shooting condition and the timing information for transition to the shooting enabled state in association with each other;
Control means for causing the radiation detection means to transition to an imageable state based on the timing information corresponding to the designated imaging condition;
A control device comprising: A control device for controlling a radiation imaging apparatus having a radiation detection means for detecting radiation generated by the radiation generation means,
Storage means for storing information on shooting time required for past shooting for each shooting condition;
Control means for acquiring information on the imaging time corresponding to the specified imaging condition from the storage means, and controlling driving of the radiation detection means;
A control device comprising: A control device for controlling a radiation imaging apparatus having a radiation detection means for detecting radiation generated by the radiation generation means,
Detecting means for detecting movement of the radiation detecting means;
A control means for controlling the driving of the radiation detection means by comparing the detection result of the detection means with a threshold corresponding to the imaging condition;
A control device comprising: A control device for controlling a radiation imaging apparatus having a radiation detection means for detecting radiation generated by the radiation generation means,
Storage means for storing information on shooting time required for past shooting for each shooting condition;
Detecting means for detecting movement of the radiation detecting means;
Corresponding to the detection result of the detection means and the imaging condition when the imaging time corresponding to the specified imaging condition exceeds the possible imaging time that can be imaged by the radiation detection means among the information on the imaging time Control means for controlling the drive of the radiation detection means by comparison with the threshold value
A control device comprising: The control means includes
An image display area for displaying a photographed image, a status display area indicating whether the radiation detection means is in an imaging preparation state or an imaging preparation completion state, and an imaging condition display area for selecting an imaging condition are displayed. The control device according to any one of claims 21 to 24, wherein display control of the display means is performed. The control means, when the radiation detection means is in the imaging preparation state,
Sending a control signal for changing from the imaging preparation state to the imaging preparation completion state to the radiation detection means,
The display control is performed so as to change the display of the status display area to a display indicating the imaging preparation completion state based on reception of a response signal indicating the change from the radiation detection unit. The control device described. When the radiation detection unit is in the imaging preparation state and the imaging condition is selected from the imaging condition display area,
The control device according to claim 25, wherein the control means performs display control so as to change the display of the status display area to a display indicating the photographing preparation completion state. An operation method of a control device for controlling a radiographic apparatus having a radiation detection means for detecting radiation generated by the radiation generation means,
A storage step in which the storage means of the control device stores the shooting condition and the timing information for transition to the shooting enabled state in association with each other;
A control step in which the control means of the control device transitions the radiation detection means to an imaging enabled state based on the timing information corresponding to the specified imaging condition;
A method of operating a control device, comprising: An operation method of a control device for controlling a radiographic apparatus having a radiation detection means for detecting radiation generated by the radiation generation means,
A storage step in which the storage means of the control device stores information on the shooting time required for past shooting for each shooting condition;
A control step in which the control unit of the control device acquires information on the imaging time corresponding to the specified imaging condition from the storage unit, and controls the driving of the radiation detection unit;
A method of operating a control device, comprising: An operation method of a control device for controlling a radiographic apparatus having a radiation detection means for detecting radiation generated by the radiation generation means,
A detection step in which the detection means of the control device detects the movement of the radiation detection means;
A control step in which the control means of the control device controls the driving of the radiation detection means by comparing the detection result of the detection step and a threshold value corresponding to the imaging condition;
A method of operating a control device, comprising: An operation method of a control device for controlling a radiographic apparatus having a radiation detection means for detecting radiation generated by the radiation generation means,
A storage step in which the storage means of the control device stores information on the shooting time required for past shooting for each shooting condition;
A detection step in which the detection means of the control device detects the movement of the radiation detection means;
When the control unit of the control device includes an imaging time corresponding to a specified imaging condition in the information related to the imaging time exceeds an imaging possible time that can be imaged by the radiation detection unit, the detection unit A control step for controlling the driving of the radiation detection means by comparing the detection result with a threshold value corresponding to the imaging condition;
A method of operating a control device, comprising:   The program for functioning a computer as each means of the control apparatus of any one of Claims 21 thru | or 27.

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