Radiation imaging system, camera control device and control method

Abstract

Radiation imaging system (10), characterized by a radiation generating device (11) arranged to generate radiation to a subject, a radiation detection device (12) arranged to detect the radiation as an image signal, a camera device (14) arranged to record a video image relating to radiation imaging performed using the radiation in an imaging room, and a camera control device (15) which is arranged to control the camera device (14), wherein the camera control device (15) comprises a detection device (151) for detecting an imaging location at which the radiation imaging is performed, and a setting device (152) for setting a parameter of the camera device (14) according to the imaging location detected by the detection device (151).

Description

TECHNICAL FIELD

[0001] The present invention relates to a radiation imaging system that images an object using radiation, a camera control device included in the radiation imaging system, and a control method thereof. TECHNICAL BACKGROUND

[0002] Recently, it has become common practice for some hospitals to install a camera device in an imaging room to detect the condition of a subject during an examination based on radiation imaging and to record the circumstances under which the examination is performed in order to analyze the cause of a failed image in radiation imaging. A method exists for having a camera device cooperate with a radiation imaging system and controlling the camera device using information stored by the radiation imaging system in such a case.For example, PTL 1 describes a method of setting an imaging range, an imaging target position, and an imaging direction of a camera device according to circumstances under which an examination is performed, and controlling the direction of the camera device according to the progress of the examination. CITATION LISTPATENT LITERATURE

[0003] PTL 1: Japanese Patent Disclosure JP 2003 - 265 460 A SUMMARY OF THE INVENTION TECHNICAL TASK

[0004] However, the method described in Patent 1 does not consider a situation where radiation imaging is performed at different locations in an imaging room, because the method assumes that the positions of a radiation generating device that generates radiation, a subject, and a radiation detecting device that detects incident radiation are fixed. In this regard, depending on the hospital, for example, there may be cases where an upright imaging table and a supine imaging table are provided in an imaging room, and one of them is used according to an examination based on radiation imaging. In such a case, it is difficult to appropriately control the direction of the camera device with the technique described in Patent 1.

[0005] The present invention has been made in view of such a problem, and an object of the invention is to provide a device that enables a camera device to record an appropriate video image with respect to circumstances under which radiation imaging is performed in an imaging room. SOLUTION TO THE TASK

[0006] A radiation imaging system according to the invention comprises a radiation generating device configured to generate radiation to a subject, a radiation detecting device configured to detect the radiation as an image signal, a camera device configured to record a video image relating to radiation imaging performed using the radiation in an imaging room, and a camera control device configured to control the camera device, wherein the camera control device includes a recognition device for recognizing an imaging location at which the radiation imaging is performed, and a setting device for setting a parameter of the camera device in accordance with the imaging location recognized by the recognition device.

[0007] The present invention also includes a camera control device included in the radiation imaging system described above and a control method thereof. ADVANTAGEOUS EFFECTS OF THE INVENTION

[0008] The present invention enables a camera device to record a suitable video image with respect to circumstances under which radiation imaging is performed in an imaging room. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic diagram showing an example of a configuration overview of a radiation imaging system according to a first embodiment of the present invention. Fig. Fig. 2 illustrates the first embodiment of the present invention and shows a schematic diagram of an example of a functional configuration of a Fig. 1 illustrated radiation detection device. Fig. Fig. 3 illustrates the first embodiment of the present invention and shows a schematic diagram of an example of a functional configuration of a Fig. 1 shown radiation imaging control device. Fig. Fig. 4 illustrates the first embodiment of the present invention and shows a schematic diagram of an example of a functional configuration of a Fig. 1 shown camera device. Fig. Fig. 5 illustrates the first embodiment of the present invention and is a schematic diagram showing an example of a functional configuration of a Fig. 1 shown camera control device. Fig. Fig. 6 illustrates the first embodiment of the present invention and is a flowchart showing an example of a processing procedure of a control method implemented by the Fig. 1 shown radiation imaging control device. Fig. Fig. 7 illustrates the first embodiment of the present invention and is a flowchart showing an example of a processing procedure of a control method implemented by the Fig. 1 shown camera control device. Fig. Fig. 8 illustrates the first embodiment of the present invention and is a flowchart showing an example of a processing procedure of a control method implemented by the Fig. 1 shown camera device. Fig. Fig. 9 illustrates the first embodiment of the present invention and is a flowchart showing an example of details of a processing procedure of a control signal in step S704 of Fig. 7 performed imaging location detection processing. Fig. Fig. 10 illustrates the first embodiment of the present invention and shows a schematic diagram of an example of camera moving image manipulation information obtained by a moving image manipulation unit of the embodiment shown in Fig. 5 can be manipulated. Fig. Fig. 11 illustrates a second embodiment of the present invention and is a flowchart showing an example of details of a processing procedure of a control signal in step S704 of Fig. 7 performed imaging location detection processing. Fig. 12 illustrates a third embodiment of the present invention and shows a schematic diagram of an example of a GUI display screen in which a radiation imaging image is associated with a camera moving image. Fig. 13 is a schematic diagram showing an example of a configuration overview of a radiation imaging system according to a fourth embodiment of the present invention. Fig. Fig. 14 illustrates the fourth embodiment of the present invention and is a schematic diagram showing an example of a functional configuration of a Fig. 13 shown camera control device. Fig. Fig. 15 illustrates the fourth embodiment of the present invention and is a diagram showing an example of a correspondence table generated by a Fig. 14 is used to select a plurality of camera devices. Fig. Fig. 16 illustrates the fourth embodiment of the present invention and is a flowchart showing an example of a processing procedure of a control method implemented by the Fig. 13 shown camera control device. Fig. Fig. 17 illustrates a fifth embodiment of the present invention and is a schematic diagram showing an example of a functional configuration of the Fig. 1 shown camera control device. Fig. Fig. 18 illustrates the fifth embodiment of the present invention and is a flowchart showing an example of a processing procedure of a control method implemented by the Fig. 1 shown radiation imaging control device. Fig. Fig. 19 illustrates the fifth embodiment of the present invention and is a flowchart showing an example of a processing procedure of a control method implemented by the Fig. 1 shown camera control device. DESCRIPTION OF THE EMBODIMENTS

[0009] Hereinafter, configurations for embodying the present invention (embodiments) will be described with reference to the drawings. (First embodiment)

[0010] First, a first embodiment of the present invention will be described.

[0011] Fig. 1 shows a schematic diagram of an example of a configuration overview of a radiation imaging system 10 according to the first embodiment of the present invention. As in Fig. 1, the radiation imaging system 10 according to the first embodiment includes a radiation generating device 11, a radiation detecting device 12, a radiation imaging control device 13, a camera device 14, and a camera control device 15. As shown in Fig. 1, the radiation imaging system 10 according to the first embodiment is further configured to cooperate with an external system 20. The radiation generating device 11 includes a radiation tube that generates radiation. In the case of the present embodiment, the radiation generating device 11 irradiates a patient serving as a subject with radiation based on control performed by the radiation imaging control device 13. In the present embodiment, the radiation preferably includes X-rays. However, the radiation is not limited to X-rays according to the present invention, and other types of radiation, such as α-rays, β-rays, or γ-rays, may be used.

[0012] The radiation detecting device 12 detects radiation as an image signal (radiation image signal) emitted from and incident on the radiation generating device 11, generates a radiation imaging image based on this radiation image signal, and outputs the generated radiation imaging image to the radiation imaging controlling device 13.

[0013] In the present embodiment, the radiation generating device 11 and the radiation detecting device 12 are also suitably arranged at locations suitable for radiation imaging of a subject in an imaging room.

[0014] The radiation imaging control device 13 is connected to the radiation generation device 11 and the radiation detection device 12 by means of a cable or wirelessly, and controls operations of the radiation generation device 11 and the radiation detection device 12. The radiation imaging control device 13 also performs predetermined image processing on a radiation imaging image output from the radiation imaging control device 13, and performs processing of displaying the radiation imaging image that has undergone image processing or processing of storing data of the radiation imaging image that has undergone image processing. The radiation imaging control device 13 is also connected to the external system 20 and the camera control device 15 via a network, and is configured to be able to exchange examination information or the like.

[0015] The camera device 14 is a device that records a video image relating to the circumstances under which radiation imaging is performed in an imaging room. Specifically, in the present embodiment, the camera device 14 records a moving image as a video image relating to the circumstances under which radiation imaging is performed in an imaging room and also transmits this moving image to the camera control device 15. Hereinafter, this moving image is referred to as a camera moving image.

[0016] The camera control device 15 is connected to the camera device 14 by means of a cable or wirelessly and controls operations of the camera device 14.

[0017] The external system 20 is an external information system that cooperates with the radiation imaging control device 13, and is, for example, a system generally implemented as RIS (Radiology Information System) in an X-ray department.

[0018] Fig. Fig. 2 illustrates the first embodiment of the present invention and shows a schematic diagram of an example of a functional configuration of the Fig. 1 shown radiation detection device 12. As in Fig. 2, the radiation detection device 12 includes an imaging unit 121, a communication unit 122, and a storage unit 123.

[0019] The imaging unit 121 detects radiation as an image signal (radiation image signal) radiated from and incident on the radiation generating device 11, and generates a radiation imaging image based on this radiation image signal.

[0020] The communication unit 122 performs communication with the radiation imaging control device 13 and performs, for example, transmission of the radiation imaging image generated by the imaging unit 121 to the radiation imaging control device 13.

[0021] The storage unit 123 stores a program and various types of information regarding control of the operation of the radiation detection device 12. The storage unit 123 also stores data of a radiation imaging image generated by the imaging unit 121 and various types of information obtained by performing communication with the radiation imaging control device 13.

[0022] Fig. 3 illustrates the first embodiment of the present invention and shows a schematic diagram of an example of a functional configuration of the Fig. 1 shown radiation imaging control device 13. As in Fig. 3, the radiation imaging control device 13 includes a display unit 131, an operation unit 132, a control unit 133, an external system cooperation unit 134, and a storage unit 135.

[0023] The display unit 131 is constituted by, for example, a liquid crystal display and displays examination information, a radiation imaging image obtained by radiation imaging, etc., to an operator on a screen.

[0024] The operation unit 132 is composed of, for example, a mouse and a keyboard, a radiation emission switch and various buttons, and receives input information from the operator.

[0025] The control unit 133 controls individual components of the radiation generation device 11, the radiation detection device 12, and the radiation imaging control device 13 according to an operation performed by the operator on the operation unit 132 to perform control and processing related to radiation imaging. The control unit 133 also performs processing such as processing for starting and stopping radiation imaging, processing for obtaining and storing a radiation imaging image, processing for transmitting information about circumstances under which an examination based on radiation imaging is performed and imaging instruction information to the camera control device 15, etc.

[0026] The external system cooperation unit 134 cooperates with the external system 20 and receives information regarding radiation imaging, such as examination information, from the external system 20.

[0027] The storage unit 135 stores a program and various types of information related to controlling the operation of the radiation imaging control device 13. The storage unit 135 also stores various types of information obtained by controlling the operation. Here, the various types of information obtained by controlling the operation include, for example, information obtained from the external system 20, a radiation imaging image obtained from the radiation detection device 12, and so on.

[0028] Fig. Fig. 4 illustrates the first embodiment of the present invention and shows a schematic diagram of an example of a functional configuration of the Fig. 1 shown camera device 14. As in Fig. 4, the camera device 14 includes an imaging unit 141, a communication unit 142, and a storage unit 143.

[0029] The imaging unit 141 acquires a video image (camera moving image) regarding circumstances under which radiation imaging is performed in an imaging room based on control performed by the camera control device 15.

[0030] The communication unit 142 performs, for example, communication with the camera control device 15, and performs, for example, transmission of a camera moving image obtained by the imaging unit 141 to the camera control device 15.

[0031] The storage unit 143 stores a program and various types of information related to controlling the operation of the camera control device 15. The storage unit 143 also stores data of a camera moving image obtained by the imaging unit 141, various types of information obtained by performing communication with the camera control device 15, etc.

[0032] Fig. Fig. 5 illustrates the first embodiment of the present invention and shows a schematic diagram of an example of a functional configuration of the Fig. 1 shown camera control device 15. As in Fig. 5, the camera control device 15 includes an imaging location detection unit 151, an imaging setting calculation unit (imaging setting unit) 152, a control unit 153, a storage unit 154, a moving image manipulation unit 155, a display unit 156, an operation unit 157, and a communication unit 158.

[0033] The imaging location recognition unit 151 recognizes an imaging location where radiation imaging is performed in an imaging room based on information (such as imaging instruction information) transmitted from the radiation imaging control device 13.

[0034] The imaging setting calculation unit 152 calculates settings of the camera device 14 according to the imaging location detected by the imaging location detection unit 151. The imaging setting calculation unit 152 calculates, for example, a direction and an imaging magnification of the camera device 14 as settings of the camera device 14. Note that the control unit 153 may pre-generate a table in which the direction and the imaging magnification of the camera device 14 are determined according to the imaging location.

[0035] As described above, the imaging setting calculation unit (imaging setting unit) 152 sets parameters of the camera device 14 according to the imaging location detected by the imaging location detection unit 151. The parameters of the camera device 14 include the direction and imaging magnification of the camera device 14.

[0036] The control unit 153 controls, for example, individual components of the camera device 14 and the camera control device 15 according to an operation performed by an operator on the operation unit 157, to perform control and processing regarding capturing a moving image performed by the camera device 14. The control unit 153 also performs processing such as transmitting the settings of the camera device 14 calculated by the imaging setting calculation unit 152 and instructions for starting and stopping capturing a moving image performed by the camera device 14 to the camera device 14.The control unit 153 may also perform control and processing regarding a capture of a moving image performed by the camera device 14 with reference to the table in which the direction and the imaging magnification of the camera device 14 are determined according to the imaging location.

[0037] The moving image manipulation unit 155 stores and manipulates a camera moving image obtained from the camera device 14 and information obtained from the radiation imaging control device 13 in relation to (in association with) each other.

[0038] The display unit 156 is formed of, for example, a liquid crystal display and displays a camera moving image manipulated by the moving image manipulation unit 155, a camera imaging setting screen, etc.

[0039] The control unit 157 is formed, for example, by a mouse and keyboard and various keys, and receives input information from the operator.

[0040] The communication unit 158 ​​performs, for example, communication with the radiation imaging control device 13 and the camera device 14 and performs, for example, acceptance of imaging instruction information from the radiation imaging control device 13.

[0041] Fig. Fig. 6 illustrates the first embodiment of the present invention and is a flowchart showing an example of a processing procedure of a control method implemented by the Fig. 1 shown radiation imaging control device 13.

[0042] When an X-ray technician operates the operation unit 132 of the radiation imaging control device 13 to input an instruction to obtain examination information (including imaging instruction information) from the external system 20, the external system cooperation unit 134 obtains the examination information from the external system 20 in step S601. Although the configuration of obtaining the examination information from the external system 20 is described in the present embodiment, a configuration in which an X-ray technician manually inputs the examination information via the operation unit 132 may be adopted, for example.

[0043] Thereafter, the X-ray technician confirms information (such as patient ID and patient name) regarding a patient who has come into the imaging room in step S602 and guides the patient to the imaging location in the imaging room.

[0044] The X-ray technician then issues an examination start instruction for an examination of the patient via the control unit 132. In step S603, for example, the control unit 133 then records this.

[0045] Thereafter, in step S604, in response to the examination start instruction from the X-ray technician, the control unit 133 transmits to the camera control device 15 information indicating that the examination has been started (circumstances under which the examination is performed) and the imaging instruction information of the corresponding examination.

[0046] Thereafter, in step S605, the control unit 133 performs communication with the camera control device 15 and determines whether the acquisition of a camera moving image by the camera device 14 has been started.

[0047] If the camera motion image capture by the camera device 14 has not yet been started as a result of the determination in step S605 (S605 / No), the process goes to step S606.

[0048] After the process proceeds to step S606, the control unit 133 waits for a predetermined time. Then, the process returns to step S605.

[0049] On the other hand, if the camera motion image capture by the camera device 14 has been started as a result of the determination in step S605 (S605 / Yes), the process goes to step S607.

[0050] After the process goes to step S607, the control unit 133 instructs the radiation generating device 11 to irradiate the patient with radiation in response to the start of camera imaging by the X-ray technician.

[0051] The radiation generation device 11, which received the radiation irradiation instruction from the control unit 133 in step S607, irradiates the patient serving as the subject with the radiation in step S608. Thereafter, the radiation detection device 12 detects radiation emitted from and incident on the radiation generation device 11 as an image signal (radiation image signal), generates a radiation imaging image based on this radiation image signal, and outputs the generated radiation imaging image to the radiation imaging control device 13.

[0052] Next, in step S609, the control unit 133 receives the radiation imaging image output from the radiation imaging control device 13 and displays the radiation imaging image on the display unit 131. The X-ray technician then reviews the radiation imaging image displayed on the display unit 131 and inputs an examination end instruction via the operation unit 132. This is then detected by the control unit 133.

[0053] Thereafter, in step S610, the control unit 133 transmits to the camera control device 15 information indicating that the examination has been completed (circumstances under which the examination is performed), the examination information, and the radiation imaging image.

[0054] After the processing of step S610 is completed, the process of Fig. 6 shown flowchart is terminated.

[0055] Fig. Fig. 7 illustrates the first embodiment of the present invention and is a flowchart showing an example of a processing procedure of a control method implemented by the Fig. 1 shown camera control device 15.

[0056] In step S701, the control unit 153 first determines whether an examination start notification has been received from the radiation imaging control device 13.

[0057] As a result of the determination in step S701, if the examination start notification has not yet been received from the radiation imaging control device 13 (S701 / No), the process goes to step S702.

[0058] After the process proceeds to step S702, the control unit 153 waits for a predetermined time. Then, the process returns to step S701.

[0059] On the other hand, as a result of the determination in step S701, if the examination start notification has been received from the radiation imaging control device 13 (S701 / Yes), the process goes to step S703.

[0060] After the process goes to step S703, the communication unit 158 ​​receives examination information (including imaging instruction information) of the corresponding examination from the radiation imaging control device 13 after the start of the examination.

[0061] Thereafter, in step S701, the imaging location recognition unit 151 recognizes the imaging location at which radiation imaging is performed in an imaging room based on the imaging instruction information included in the examination information received in step S703.

[0062] Next, in step S705, the imaging setting calculation unit 152 calculates settings of the camera device 14 (for example, imaging settings such as the direction (orientation) and imaging magnification of the camera device 14) according to the imaging location detected in step S704. Note that, in calculating the imaging magnification, for example, the magnification at which the imaging location detected in step S704 becomes the sharpest may be selected, the magnification at which the entire radiation detection device 12 is included in the imaging region may be selected, or the magnification at which the patient's face is included in the imaging region may be selected.

[0063] Thereafter, in step S706, the control unit 153 instructs the camera device 14 to change the settings of the camera device 14 to the settings (imaging settings) calculated in step S705.

[0064] Thereafter, in step S707, the control unit 153 instructs the camera device 14 to start imaging.

[0065] Thereafter, the control unit 153 notifies the radiation imaging control device 13 that the camera device 14 has started imaging in step S708.

[0066] Thereafter, in step S709, the control unit 153 performs communication with the radiation imaging control device 13 to determine whether an examination end notification has been received from the radiation imaging control device 13.

[0067] As a result of the determination in step S709, if the examination end notification has not yet been received from the radiation imaging control device 13 (S709 / No), the process goes to step S710.

[0068] After the process proceeds to step S710, the control unit 153 waits for a predetermined time. Then, the process returns to step S709.

[0069] On the other hand, when the examination end notification has been received from the radiation imaging control device 13 as a result of the determination in step S709 (S709 / Yes), the process goes to step S711.

[0070] After the process goes to step S711, the control unit 153 instructs the camera device 14 to stop imaging in response to the end of the examination.

[0071] Thereafter, in step S712, the moving image manipulation unit 155 receives a camera moving image captured by the camera device 14 from the camera device 14.

[0072] Next, in step S713, the motion image manipulation unit 155 stores the camera motion image received in step S712 and the examination information (including the imaging instruction information) received in step S703 in association with each other as camera motion image manipulation information. At this time, the motion image manipulation unit 155 may obtain the radiation imaging image from the radiation imaging control device 13 and further store the obtained radiation imaging image in association with the camera motion image and the examination information described above as the camera motion image manipulation information.

[0073] After the processing of step S713 is completed, the process of the Fig. 7 shown flowchart.

[0074] Fig. Fig. 8 illustrates the first embodiment of the present invention and is a flowchart showing an example of a processing procedure of a control method implemented by the Fig. 1 shown camera device 14.

[0075] In step S801, the camera device 14 first reflects the settings of the camera device 14 in the imaging unit 141 that the camera control device 15 instructed the camera device 14 to change (in S706).

[0076] Thereafter, in step S802, the camera device 14 determines whether an imaging start instruction has been received from the camera control device 15.

[0077] If an imaging start instruction has not yet been received from the camera control device 15 as a result of the determination in step S802 (S802 / No), the process goes to step S803.

[0078] After the process proceeds to step S803, the camera device 14 waits for a predetermined time. Then, the process returns to step S802.

[0079] On the other hand, if the imaging start instruction has been received from the camera control device 15 as a result of the determination in step S802 (S802 / Yes), the process goes to step S804.

[0080] After the process proceeds to step S804, the imaging unit 141 starts camera imaging in response to the imaging start instruction and starts storing a camera moving image in the storage unit 143. At the same time as the start of camera imaging by the imaging unit 141, the communication unit 142 starts transmitting the camera moving image being acquired to the camera control device 15 in real time.

[0081] Thereafter, in step S805, the camera device 14 determines whether an imaging end instruction has been received from the camera control device 15.

[0082] If an imaging end instruction has not yet been received from the camera control device 15 as a result of the determination in step S805 (S805 / No), the process goes to step S806.

[0083] After the process proceeds to step S806, the camera device 14 waits for a predetermined time. Then, the process returns to step S805.

[0084] On the other hand, if the imaging end instruction has been received from the camera control device 15 as a result of the determination in step S805 (S805 / Yes), the process goes to step S807.

[0085] After the process proceeds to step S807, the imaging unit 141 terminates the camera imaging in response to the imaging termination instruction and terminates the storage of the camera moving image in the storage unit 143. After the termination of the camera imaging, the communication unit 142 also terminates the real-time transmission of the camera moving image to the camera control device 15.

[0086] After the end of the processing of step S807, the process of Fig. 8 shown flowchart is terminated.

[0087] Next, details of a processing procedure of imaging location recognition processing executed in step S704 of Fig. 7 is carried out.

[0088] Fig. Fig. 9 illustrates the first embodiment of the present invention and is a flowchart showing an example of details of a processing procedure of the step S704 of Fig. 7 performed imaging location detection processing.

[0089] First, in step S901, an X-ray technician preliminarily sets a detection mark on the radiation detection device 12 before imaging is performed by the camera device 14.

[0090] Next, in step S902, the imaging location recognition unit 151 performs processing of searching for the marker set on the radiation detection device 2 from a camera moving image transmitted in real time from the camera device 14. At this time, the imaging location recognition unit 151 may adopt a configuration of searching for the marker using a well-known image recognition method.

[0091] Thereafter, the imaging location recognition unit 151 determines in step S903 whether the mark is successfully detected as a result of the search performed in step S902.

[0092] If, as a result of the determination in step S903, the detection of the mark is unsuccessful (S903 / No), the process goes to step S904.

[0093] After the process proceeds to step S904, the imaging location detection unit 151 performs detection to set the imaging location to a default position preset by the X-ray technician. Note that the default position set at this time can be any position.

[0094] On the other hand, if the detection of the marker is successful (S903 / Yes) as a result of the determination in step S903, the process proceeds to step S905. After the process proceeds to step S905, the imaging location recognition unit 151 performs image processing on an area around the marker detected in step S902 in the camera moving image transmitted from the camera device 14 to search for an imaging portion of a subject included in the examination information received in step S703.

[0095] Thereafter, the imaging location recognition unit 151 determines in step S906 whether the imaging section is successfully detected as a result of the search performed in step S905.

[0096] If the detection of the imaging portion is successful (S906 / Yes) as a result of the determination in step S906, the process goes to step S907.

[0097] After the process goes to step S907, the imaging location recognition unit 151 performs recognition to set the imaging location to the position of the imaging portion acquired in step S905.

[0098] On the other hand, when the detection of the imaging portion is not successful as a result of the determination in step S906 (S906 / No), the process goes to step S908.

[0099] After the process proceeds to step S908, the imaging location detection unit 151 determines whether there is still an area to be searched. If, as a result of this determination, there is no area left to be searched (S908 / No), the process proceeds to step S904, and the detection for setting the imaging location to the default position is performed as described above.

[0100] If there is still an area to be searched as a result of the determination in step S908, the process goes to step S909.

[0101] After the process proceeds to step S909, the imaging location recognition unit 151 performs setting to expand the search range in which the search is to be performed in step S905. Thereafter, the process returns to step S905, and the processing of step S905 and subsequent steps is performed on the search range set in step S909.

[0102] If the processing of step S904 is finished, or if the processing of step S907 is finished, the process of the Fig. 9 shown flowchart is terminated.

[0103] It is noted that in the processing of the data contained in Fig. 9, the configuration in which the detection mark is set on the radiation detection device 12 in step S901, and the radiation detection device 12 is detected by detecting the mark in subsequent processing, has been described. However, the invention is not limited to this configuration, and a configuration in which the radiation detection device 12 is detected directly from the camera moving image transmitted from the camera device 14 without attaching the mark to the radiation detection device 12 can also be adopted according to the invention.

[0104] In step S905 of Fig. 9, the start position of the imaging site search and the search range can also be determined using the examination information received in step S703. For example, a correspondence table of the imaging section and the imaging site can be prepared in advance, and the search can be started from a region around the default position of the imaging site according to the received imaging section.

[0105] Next, an example of camera moving image manipulation information manipulated by the moving image manipulation unit 155 will be described.

[0106] Fig. Fig. 10 illustrates the first embodiment of the present invention and shows a schematic representation of an example of camera moving image manipulation information 1000 generated by the moving image manipulation unit 155 of the Fig. 5 shown camera control device 15. The Fig. The camera moving image manipulation information 1000 shown in Fig. 10 is a schematic diagram illustrating an example of camera moving image manipulation information of a specific date (October 13, 2017).

[0107] The Fig. The camera moving image manipulation information 1000 illustrated in FIG. 10 includes camera ID information 1010, camera moving image imaging date information 1020, and camera moving image manipulation table information 1030. In addition, in the camera moving image manipulation table information 1030, camera moving image ID information 1031, camera moving image imaging start time information 1032, camera moving image imaging end time information 1033, patient ID information 1034, patient name information 1035, examination ID information 1036, imaging section information 1037, and radiation imaging image ID information 1038 are stored in association with each other.

[0108] The camera ID information 1010 is used to display a camera ID that enables unique identification of information regarding the camera device 14, such as the model name of the camera device 14, the manufacturer name, and the installation location of the camera device 14.

[0109] The camera moving image ID information 1031 is used to display a camera moving image ID that enables unique identification of camera moving image information such as the stored camera moving image, the imaging start time, and the imaging end time.

[0110] In addition, the examination information described above includes information about the conditions of radiation imaging performed for each patient. Examples of radiation imaging condition information include, for example, the imaging section, the imaging direction, the radiation detection device 12 used in the examination, and the distance between the patient and the radiation generation device 11. Fig. 10, the examination information is shown as examination ID information 1036, which enables unique identification of this examination information.

[0111] The radiation imaging image information is also information regarding a radiation imaging image received by the radiation imaging control device, and is, for example, a file path of the radiation imaging image. According to Fig. 10, the radiation imaging image information is displayed as radiation imaging image ID information 1038, which enables unique identification of this radiation imaging image information.

[0112] The camera control device 15 according to the first embodiment detects the imaging location at which radiation imaging is performed in the imaging room (S704, Fig. 9) and calculates the settings of the camera device 14 according to the detected imaging location (S705).

[0113] Such a configuration enables the camera device 14 to record an appropriate video image with respect to circumstances under which radiation imaging is performed in an imaging room.

[0114] The camera control device 15 according to the first embodiment further calculates the direction and the imaging magnification of the camera device 14 as settings of the camera device 14 according to the imaging location (S705).

[0115] Such a configuration enables recording of a video image with respect to circumstances under which radiation imaging is performed in an imaging room, with the appropriate direction of the camera device 14 at high image resolution. (Second embodiment)

[0116] Next, a second embodiment of the present invention will be described. Note that the description of features common to the above-described first embodiment will be omitted, and features different from those of the above-described first embodiment will be described in the second embodiment described below.

[0117] The second embodiment differs from the first embodiment particularly in details of a processing procedure of the step S704 of Fig. 7 performed imaging location detection processing.

[0118] Fig. Fig. 11 illustrates the second embodiment of the present invention and is a flowchart showing an example of details of a processing procedure of the step S704 of Fig. 7 performed imaging location detection processing.

[0119] In step S1101, the imaging location recognition unit 151 first receives a camera moving image transmitted in real time from the camera device 14.

[0120] Next, in step S1102, the imaging location recognition unit 151 performs processing for searching for a body of a patient serving as a subject from the camera moving image received in step S1101. At this time, the imaging location recognition unit 151 may adopt a configuration for searching for a person's body using a well-known image recognition method.

[0121] Thereafter, the imaging location recognition unit 151 determines in step S1103 whether the body of a person is successfully detected as a result of the search performed in step S1102.

[0122] If the detection of a person's body is unsuccessful as a result of the determination in step S1103 (S1103 / No), the process goes to step S1104.

[0123] After the process proceeds to step S1104, the imaging location detection unit 151 performs detection to set the imaging location to a default position preset by the X-ray technician. Note that the default position set at this time can be any position.

[0124] On the other hand, if the detection of a person's body is successful (S1103 / Yes) as a result of the determination in step S1103, the process goes to step S1105.

[0125] After the process goes to step S1105, the imaging location recognition unit 151 performs image processing on an area around the body of a person acquired in step S1102 in the camera moving image transmitted from the camera device 14 to search for an imaging portion of the subject included in the examination information received in step S703.

[0126] Thereafter, the imaging location recognition unit 151 determines in step S1106 whether the imaging section is successfully detected as a result of the search performed in step S1105.

[0127] When the detection of the imaging portion is successful as a result of the determination in step S1106 (S1106 / Yes), the process goes to step S1107.

[0128] After the process goes to step S1107, the imaging location recognition unit 151 performs recognition to set the imaging location to the position of the imaging portion acquired in step S1105.

[0129] On the other hand, when the detection of the imaging portion is not successful as a result of the determination in step S1106 (S1106 / No), the process goes to step S1108.

[0130] After the process goes to step S1108, the imaging location recognition unit 151 performs recognition to set the imaging location to the position of a person's body detected in step S1102.

[0131] If the processing of step S1104 is finished, the processing of step S1107 is finished, or the processing of step S1108 is finished, the process of the Fig. 11 shown flowchart.

[0132] It is noted that in the processing of the data contained in Fig. 11, the configuration in which a search for detecting a person's body is performed using a camera image in step S1102 has been described. However, the present invention is not limited to this configuration. For example, a configuration may be adopted in which an infrared sensor is installed near the camera device 14, a far-infrared image recording the condition in the imaging space is transmitted from this infrared sensor to the imaging location recognition unit 151, and the imaging location recognition unit 151 performs a search for detecting a person's body using this far-infrared image.

[0133] As with the first embodiment described above, the camera control device 15 according to the second embodiment enables the camera device 14 to record an appropriate video image for circumstances under which radiation imaging is performed in an imaging room. Furthermore, in the second embodiment, the imaging location is successfully detected even when the camera control device 15 cannot detect the radiation detection device 12 because the subject obscures the radiation detection device 12 due to the arrangement of the subject, the radiation generation device 11, the radiation detection device 12, and the camera device 14. (Third embodiment)

[0134] A third embodiment of the present invention will be described below. Note that common features with the above-described first and second embodiments will not be described, and in the third embodiment described below, features different from those of the above-described first and second embodiments will be described.

[0135] In the third embodiment, a configuration is described in which it is assumed that an X-ray technician browses a camera moving image associated with a radiation imaging image.

[0136] Fig. 12 illustrates the third embodiment of the present invention and shows a schematic diagram of an example of a GUI display screen 1200 in which a radiation imaging image is associated with a camera moving image. In the present embodiment, this GUI display screen 1200 is assumed to be displayed on the display unit 156 of the camera control device 15. However, a configuration in which the GUI display screen 1200 is displayed on the display unit 131 of the radiation imaging control device 13, for example, may also be adopted.

[0137] As in Fig. As shown in FIG. 12, the GUI display screen 1200 is provided with a camera motion image list display section 1210, a camera motion image display section 1220, a camera motion image control section 1230, and a related information display section 1240. The camera motion image list display section 1210 displays a list of camera motion images stored by the motion image manipulation unit 155 of the camera control device 15. Specifically, the camera motion image list display section 1210 displays a list of imaging date information 1211, camera ID information 1212, patient ID information 1213, and examination ID information 1214. An X-ray technician narrows down a camera motion image to be searched based on the information displayed in the camera motion image list display section 1210 to select the corresponding record.

[0138] The camera moving image display section 1220 displays a camera moving image selected by the X-ray technician from the list displayed in the camera moving image list display section 1210. In particular, the Fig. 12, the camera moving image display section 1220 illustrates a camera moving image including a radiation generating device 1221 corresponding to the radiation detecting device 11, a radiation detecting device 1223 corresponding to the radiation generating device 12, and a subject 1222 corresponding to a patient located between the radiation generating device 1221 and the radiation detecting device 1223.

[0139] The camera motion image control section 1230 performs control on the camera motion image displayed in the camera motion image display section 1220. Examples of control include play, pause, stop, rewind, fast-forward, and full-screen display. However, the control in this embodiment is not limited to these. The X-ray technician performs these types of control on the camera motion image to search for the circumstances under which radiation imaging is performed.

[0140] The related information display section 1240 displays information regarding the camera moving image selected by the X-ray technician from the list displayed in the camera moving image list display section 1210. For example, the information in Fig. 10 (information regarding the camera device 14, the camera moving image information, the patient information, the examination information, and the radiation imaging image information) is displayed. Fig. In the example shown in FIG. 12, the related information display section 1240 specifically displays patient information 1241, examination information 1242, imaging image information 1243, camera moving image information 1244, and a radiation imaging image playback button 1245. Note that, regarding the radiation imaging image, the radiation imaging image may be displayed in full screen mode in response to clicking the radiation imaging image playback button 1245.

[0141] The camera control device 15 according to the third embodiment provides advantages similar to those of the camera control device 15 according to the first embodiment described above. (Fourth embodiment)

[0142] Next, a fourth embodiment of the present invention will be described. Note that features common to the first to third embodiments described above will not be described, and in the fourth embodiment described below, features different from those of the first to third embodiments described above will be described.

[0143] Fig. 13 shows a schematic diagram of an example of a configuration overview of the radiation imaging system 10 according to the fourth embodiment of the present invention. In Fig. 13 are in Fig. 1, similar components are designated by the same reference numerals, and their detailed description is omitted.

[0144] As in Fig. 13, the radiation imaging system 10 according to the fourth embodiment includes the radiation generating device 11, the radiation detecting device 12, the radiation imaging control device 13, a camera device 14A, a camera device 14B, and the camera control device 15. As shown in Fig. 13, the radiation imaging system 10 according to the fourth embodiment is also configured to cooperate with the external system 20. The Fig. The radiation imaging system 10 according to the fourth embodiment shown in Fig. 13 differs from that shown in Fig. 1 according to the first embodiment in particular in that the plurality of camera devices 14A and 14B are included.

[0145] The camera device 14A and the camera device 14B are each a device that records a video image relating to the circumstances under which radiation imaging is performed. In the present embodiment, the camera device 14A and the camera device 14B each record a different moving image (camera moving image) as a video image relating to the circumstances under which radiation imaging is performed in an imaging room, and transmit this camera moving image to the camera control device 15.

[0146] The camera control device 15 is connected to the camera device 14A and the camera device 14B by means of a cable or wirelessly and controls the operation of the camera device 14A and the camera device 14B.

[0147] Fig. Fig. 14 illustrates the fourth embodiment of the present invention and is a schematic diagram showing an example of a functional configuration of the Fig. 13 shown camera control device 15. In Fig. 14 are components similar to those in Fig. 5 are designated by the same reference numerals, and their detailed description is omitted.

[0148] As in Fig. 14, the camera control device 15 according to the present embodiment includes the imaging location recognition unit 151, the imaging setting calculation unit 152, the control unit 153, the storage unit 154, the moving image manipulation unit 155, the display unit 156, the operation unit 157, the communication unit 158, and a camera selection unit 159. That is, the camera control device 15 according to the fourth embodiment includes, in addition to the individual components of the Fig. 5, the camera control device 15 according to the first embodiment includes the camera selection unit 159.

[0149] The camera selection unit 150 selects a camera device 14 from the plurality of camera devices 14A and 14B based on imaging instruction information included in examination information transmitted and received from the radiation imaging control device 13.

[0150] Fig. Fig. 15 illustrates the fourth embodiment of the present invention and is a diagram showing an example of a correspondence table generated by the Fig. 14 is used to select a camera device 14. Fig. 15 specifically illustrates an example of a correspondence table of the imaging section and the camera device.

[0151] The present embodiment adopts a configuration in which the camera ID of the corresponding camera device is manipulated for each imaging section. Here, it is assumed that the camera ID of the Fig. 13 illustrated camera device 14A is C0001, and the camera ID of the Fig. 13 is C0002. In this case, a configuration is adopted in which the camera selection unit 159 selects the camera device 14A when the breast is specified as the imaging section in the imaging instruction information, and the camera selection unit 159 selects the camera device 14B when the hand is specified as the imaging section in the imaging instruction information. In the present embodiment, the configuration of using the correspondence table of the imaging section and the camera device is described as an example. However, the present invention is not limited to this configuration. For example, the present invention may adopt a configuration in which a correspondence table of the camera device and the imaging table (for the upright position, the lying position, or the like) is used instead of the imaging section.

[0152] Fig. Fig. 16 illustrates the fourth embodiment of the present invention and is a flowchart showing an example of a processing procedure of a control method implemented by the Fig. 13 shown camera control device 15.

[0153] In step S1601, the control unit 153 first determines whether an examination start notification has been received from the radiation imaging control device 13.

[0154] As a result of the determination in step S1601, if the examination start notification has not yet been received from the radiation imaging control device 13 (S1601 / No), the process goes to step S1602.

[0155] After the process proceeds to step S1602, the control unit 153 waits for a predetermined time. Then, the process returns to step S1601.

[0156] On the other hand, if the examination start notification has been received from the radiation imaging control device 13 as a result of the determination in step S1601 (S1601 / Yes), the process goes to step S1603.

[0157] After the process goes to step S1603, the communication unit 158 ​​receives examination information (including imaging instruction information) of the corresponding examination from the radiation imaging control device 13 after the start of the examination.

[0158] Thereafter, in step S1604, the camera selection unit 159 selects a camera device 14 from the plurality of camera devices 14A and 14B based on the imaging instruction information included in the examination information received in step S1603. Specifically, the camera selection unit 159 selects the camera device 14 using the Fig. 15, selects the camera device 14A having the camera ID C0001 when the imaging instruction information specifies the breast as the imaging section, or the camera device 14B having the camera ID C0002 when the imaging instruction information specifies the hand as the imaging section.

[0159] Thereafter, in step S1605, the imaging location recognition unit 151 recognizes the imaging location at which radiation imaging is performed in the imaging room based on the imaging instruction information included in the examination information received in step S1603. The processing of the Fig. 9 or the processing of the flow chart shown in Fig. The flowchart shown in Fig. 11 can be used as detailed processing of this imaging location recognition processing performed in step S1605.

[0160] Next, in step S1606, the imaging setting calculation unit 152 calculates settings of the camera device 14 selected in step S1604 (for example, imaging settings such as the direction (orientation) and imaging magnification of the camera device 14) according to the imaging location detected in step S1605. Note that, when calculating the imaging magnification, for example, the magnification at which the imaging location detected in step S1605 becomes the sharpest may be selected, the magnification at which the entire radiation detection device 12 is included in the imaging region may be selected, or the magnification at which the patient's face is included in the imaging region may be selected.

[0161] Thereafter, the control unit 153 instructs the camera device 14 selected in step S1604 to change the settings of the camera device 14 to the settings (imaging settings) calculated in step S1606 in step S1607.

[0162] Thereafter, the control unit 153 instructs the camera device 14 selected in step S1604 to start imaging in step S1608.

[0163] Thereafter, the control unit 153 notifies the radiation imaging control device 13 in step S1609 that the camera device 14 selected in step S1604 has started imaging.

[0164] Thereafter, in step S1610, the control unit 153 performs communication with the radiation imaging control device 13 to determine whether an examination end notification has been received from the radiation imaging control device 13.

[0165] If, as a result of the determination in step S1610, no examination end notification has been received from the radiation imaging control device 13 yet (S1610 / No), the process goes to step S1611.

[0166] After the process proceeds to step S1611, the control unit 153 waits for a predetermined time. Then, the process returns to step S1610.

[0167] On the other hand, when the examination end notification has been received from the radiation imaging control device 13 as a result of the determination in step S1610 (S1610 / Yes), the process goes to step S1612.

[0168] After the process goes to step S1612, the control unit 153 instructs the camera device 14 selected in step S1604 to stop imaging in response to the end of the examination.

[0169] Thereafter, in step S1613, the moving image manipulation unit 155 receives from the camera device 14 selected in step S1604 a camera moving image captured by the camera device 14.

[0170] Next, in step S1614, the motion image manipulation unit 155 stores the camera motion image received in step S1613 and the examination information (including the imaging instruction information) received in step S1603 in association with each other as camera motion image manipulation information. At this time, the motion image manipulation unit 155 may receive the radiation imaging image from the radiation imaging control device 13 and may further store the obtained radiation imaging image in association with the camera motion image and the examination information described above as the camera motion image manipulation information.

[0171] After the processing of step S1614 ends, the process of the Fig. 16 shown flowchart.

[0172] The camera control device 15 according to the fourth embodiment selects a camera device 14 from the plurality of camera devices 14A and 14B based on imaging instruction information included in examination information received from the radiation imaging control device 13 (S1604). Then, the camera control device 15 according to the fourth embodiment detects the imaging location where radiation imaging is performed in the imaging room (S1605) and calculates the settings of the camera device 14 according to the detected imaging location (S1606).

[0173] Such a configuration enables the camera device 14 to record a video image appropriate for the circumstances under which radiation imaging is performed in an imaging room. Furthermore, since a camera device 14 is selected from the plurality of camera devices 14A and 14B based on the imaging instruction information, a more appropriate video image is successfully recorded for the circumstances under which radiation imaging is performed in the imaging room. (Fifth embodiment)

[0174] Next, a fifth embodiment of the present invention will be described. Note that features common to the first to fourth embodiments described above will not be described, and in the fifth embodiment described below, features different from those of the first to fourth embodiments described above will be described.

[0175] In the fifth embodiment, a configuration will be described in which a body movement of a patient serving as a subject, which may become a cause of a failed image in radiation imaging, is detected, and this body movement detection information is automatically added to the examination information stored by the radiation imaging system 10.

[0176] Fig. Fig. 17 illustrates the fifth embodiment of the present invention and is a schematic diagram showing an example of a functional configuration of the Fig. 1 shown camera control device 15. In Fig. 17 are in Fig. 5, similar components are provided with the same reference numerals, and their detailed description is omitted.

[0177] As in Fig. 17, the camera control device 15 according to the present embodiment includes the imaging location recognition unit 151, the imaging setting calculation unit 152, the control unit 153, the storage unit 154, the moving image manipulation unit 155, the display unit 156, the operation unit 157, the communication unit 158, and a body movement detection unit 1510. That is, the camera control device 15 according to the fifth embodiment further includes the body movement detection unit 1510 in addition to the individual components of the Fig. 5 shown camera control device 15 according to the first embodiment.

[0178] The body movement detection unit 1510 detects a body movement of a patient serving as a subject from a camera moving image representing a video image regarding circumstances under which radiation imaging is performed in an imaging room and obtained by the camera device 14.

[0179] In the case of the present embodiment, a configuration is adopted in which the communication unit 158 ​​transmits the body movement detection information to the radiation imaging control device 13 when a body movement of the patient is detected by the body movement detection unit 1510.

[0180] Fig. Fig. 18 illustrates the fifth embodiment of the present invention and is a flowchart showing an example of a processing procedure of a control method implemented by the Fig. 1 shown radiation imaging control device 13.

[0181] When an X-ray technician operates the operation unit 132 of the radiation imaging control device 13 to input an instruction to obtain examination information (including imaging instruction information) from the external system 20, the external system cooperation unit 134 obtains the examination information from the external system 20 in step S1801. Although the configuration of obtaining the examination information from the external system 20 is described in the present embodiment, a configuration in which an X-ray technician manually inputs the examination information via the operation unit 132 may be adopted, for example.

[0182] Thereafter, in step S1802, the X-ray technician confirms information (such as the patient ID and the patient name) regarding a patient who has come into the imaging room and guides the patient to the imaging location in the imaging room.

[0183] The X-ray technician then issues an examination start instruction for an examination of the patient via the operating unit 132. The control unit 133 then records this, for example, in step S1803.

[0184] Thereafter, in response to the examination start instruction from the X-ray technician in step S1804, the control unit 133 transmits information indicating that the examination has been started (circumstances under which the examination is performed) and the imaging instruction information of the corresponding examination to the camera control device 15.

[0185] Thereafter, in step S1805, the control unit 133 performs communication with the camera control device 15 and determines whether capture of a camera moving image by the camera device 14 has been started.

[0186] If, as a result of the determination in step S1805, the acquisition of the camera moving image by the camera device 14 has not yet been started (S1805 / No), the process goes to step S1806.

[0187] After the process proceeds to step S1806, the control unit 133 waits for a predetermined time. Then, the process returns to step S1805.

[0188] On the other hand, if, as a result of the determination in step S1805, the acquisition of the camera moving image by the camera device 14 has been started (S1805 / Yes), the process goes to step S1807.

[0189] After the process goes to step S1807, the control unit 123 instructs the radiation generating device 11 to irradiate the patient with radiation in response to the start of imaging instructed by the X-ray technician.

[0190] The radiation generation device 11, which received the irradiation instruction from the control unit 133 in step S1807, irradiates the patient serving as the subject with radiation in step S1808. Thereafter, the radiation detection device 12 detects radiation emitted from and incident on the radiation generation device 11 as an image signal (radiation image signal), generates a radiation imaging image based on this radiation image signal, and outputs the generated radiation imaging image to the radiation imaging control device 13.

[0191] Thereafter, in step S1809, the control unit 133 determines whether body motion detection information has been received from the camera control device 15.

[0192] If, as a result of the determination in step S1809, the body motion detection information has been received from the camera control device 15 (S1809 / Yes), the process goes to step S1810.

[0193] After the process proceeds to step S1810, the control unit 133 performs processing to add the body motion detection information received in step S1809 to the examination information obtained in step S1801. Note that the examination information to which the body motion detection information is added may be any information. For example, if "Detection date and time: 2017 / 10 / 20 10:00, Acquisition Content: Body Movement" is received as body movement acquisition information, "Acquisition Date and Time: 2017 / 10 / 20 10:00, Acquisition Content: Body Movement" can be added as is as the failed image basic information included in the examination information.

[0194] When the processing of S1810 ends, or when it is determined in step S1809 that the body movement detection information has not been received from the camera control device 15 (S1809 / No), the process goes to step S1811.

[0195] After the process proceeds to step S1811, the control unit 133 receives a radiation imaging image output from the radiation imaging control device 13 and displays this radiation imaging image, for example, together with the body motion detection information, on the display unit 131. Then, the X-ray technician checks the body motion detection information and the radiation imaging image displayed on the display unit 131 and inputs an examination end instruction via the operation unit 132. The control unit 133 then detects this. Note that a configuration may also be adopted in which the X-ray technician, after checking the body motion detection information and the radiation imaging image displayed on the display unit 131, inputs an instruction to perform the examination again, and the process returns to step S1803 when the examination is performed again.

[0196] If the examination ends without performing the examination again, the processing goes to step S1812, in which the control unit 133 transmits information indicating that the examination is ended (circumstances under which the examination is performed), the examination information and the radiation imaging image to the camera control device 15.

[0197] After the processing of step S1812 ends, the process of the Fig. 18 shown flowchart.

[0198] Fig. Fig. 19 illustrates the fifth embodiment of the present invention and is a flowchart showing an example of a processing procedure of a control method implemented by the Fig. 1 shown camera control device 15.

[0199] First, in step S1901, the control unit 153 determines whether an examination start notification has been received from the radiation imaging control device 13.

[0200] When the examination start notification has not yet been received by the radiation imaging control device 13 as a result of the determination in step S1901 (S1901 / No), the process goes to step S1902.

[0201] After the process proceeds to step S1902, the control unit 153 waits for a predetermined time. Then, the process returns to step S1901.

[0202] On the other hand, as a result of the determination in step S1901, when the examination start notification has been received from the radiation imaging control device 13 (S1901 / Yes), the process goes to step S1903.

[0203] After the process goes to step S1903, the communication unit 158 ​​receives examination information (including imaging instruction information) of the corresponding examination from the radiation imaging control device 13 after the start of the examination.

[0204] Thereafter, in step S1904, the imaging location recognition unit 151 recognizes the imaging location at which radiation imaging is performed in the imaging room based on the imaging instruction information included in the examination information received in step S1903. The processing of the Fig. 9 or the processing of the flow chart shown in Fig. 11 can be used as detailed processing of this imaging site recognition processing in step S1904.

[0205] Next, in step S1905, the imaging setting calculation unit 152 calculates settings of the camera device 14 (for example, imaging settings such as the direction (orientation) and imaging magnification of the camera device 14) according to the imaging location detected in step S1904. Note that, when calculating the imaging magnification, for example, the magnification at which the imaging location detected in step S1904 becomes the sharpest may be selected, the magnification at which the entire radiation detection device 12 is included in the imaging region may be selected, or the magnification at which the patient's face is included in the imaging region may be selected.

[0206] Thereafter, in step S1906, the control unit 153 instructs the camera device 14 to change the settings of the camera device 14 to the settings (imaging settings) calculated in step S1905.

[0207] Thereafter, the control unit 153 instructs the camera device 14 to start imaging in step S1907.

[0208] Thereafter, the control unit 153 notifies the radiation imaging control device 13 that the camera device 14 has started imaging in step S1908.

[0209] Thereafter, the control unit 153 determines in step S1909 whether an irradiation instruction (S1807) has been received from the radiation imaging device 13.

[0210] If no irradiation instruction has been received from the radiation imaging device 13 as a result of the determination in step S1909 (S1909 / No), the process goes to step S1910.

[0211] After the process proceeds to step S1910, the control unit 153 waits for a predetermined time. Then, the process returns to step S1909.

[0212] On the other hand, if the irradiation instruction has been received from the radiation imaging device 13 as a result of the determination in step S1909 (S1909 / Yes), the process goes to step S1911.

[0213] After the process proceeds to step S1911, the body motion detection unit 1510 analyzes the camera motion image obtained by the camera device 14 to determine whether a body motion of a patient serving as the subject is detected. At this time, a configuration may be adopted in which the body motion detection unit 1510 detects a body motion of the patient using a well-known image recognition method.

[0214] Thereafter, in step S1912, the body movement detection unit 1510 determines whether a body movement of the patient is detected as a result of the analysis performed in step S1911.

[0215] If a body movement of the patient is detected as a result of the determination in step S1912 (S1912 / Yes), the process goes to step S1913.

[0216] After the process proceeds to step S1913, the communication unit 158 ​​transmits body motion detection information to the radiation imaging control device 13. Note that the body motion detection information transmitted here may be any information. For example, the detection date and time and the detection content (e.g., detection of a body motion) may be transmitted as body motion detection information.

[0217] When the processing of step S1913 ends, or when a body movement of the patient is not detected in step S1912 (S1912 / No), the process proceeds to step S1914. After the process proceeds to step S1914, the control unit 153 performs communication with the radiation imaging control device 13 to determine whether an examination end notification has been received from the radiation imaging control device 13.

[0218] As a result of the determination in step S1914, if the examination end notification has not yet been received from the radiation imaging control device 13 (S1914 / No), the process goes to step S1915.

[0219] After the process proceeds to step S1915, the control unit 153 waits for a predetermined time. Then, the process returns to step S1914.

[0220] On the other hand, when the examination end notification has been received from the radiation imaging control device 13 as a result of the determination in step S1914 (S1914 / Yes), the process goes to step S1916.

[0221] After the process goes to step S1916, the control unit 153 instructs the camera device 14 to stop imaging in response to the end of the examination.

[0222] Thereafter, in step S1917, the moving image manipulation unit 155 receives from the camera device 14 a camera moving image captured by the camera device 14.

[0223] Next, in step S1918, the motion image manipulation unit 155 stores the camera motion image received in step S1917 and the examination information (including the imaging instruction information) received in step S1903 in association with each other as camera motion image manipulation information. At this time, the motion image manipulation unit 155 may obtain the radiation imaging image from the radiation imaging control device 13 and further store the obtained radiation imaging image in association with the camera motion image and the examination information described above as camera motion image manipulation information.

[0224] After the processing of step S1918 is completed, the process of Fig. 19 shown flowchart is terminated.

[0225] It is noted that the Fig. 17 shows a functional configuration of the camera control device 15 according to the fifth embodiment, which further includes the body movement detection unit 1510 in addition to the functional configuration of the camera control device 15 according to the fifth embodiment. Fig. 1 according to the first embodiment. However, the present invention is not limited to this configuration. For example, the functional configuration of the camera control device 15 according to the fifth embodiment may be a configuration that further includes the body movement detection unit 1510 in addition to the body movement detection unit 1510 shown in Fig. 14 of the camera control device 15 according to the fourth embodiment. Such a configuration can also be encompassed by the present invention. If such a configuration is adopted, the configuration is adopted which further includes the Fig. 14 illustrated camera selection unit 159 in addition to the one shown in Fig. 17 illustrates the functional configuration.

[0226] The camera control device 15 according to the fifth embodiment performs detection of a body movement of a patient serving as a subject from a camera moving image obtained by the camera device 14 (S1912, S1913) in addition to the processing performed by the camera control device 15 according to the first embodiment described above.

[0227] In addition to the advantageous effects of the first embodiment described above, such a configuration enables an X-ray technician to be informed of a body movement of a patient serving as a subject, which may become a cause of a failed image in radiation imaging. (Further examples)

[0228] The present invention can be implemented by processing a program for implementing one or more functions of the above-described embodiments to a system or device via a network or storage medium and causing one or more processors in the computer of the system or device to read and execute the program. The present invention can also be implemented by means of a circuit (e.g., ASIC) for implementing one or more functions.

[0229] This program and a computer-readable storage medium storing the program are also encompassed by the present invention.

[0230] It should be noted that the above-described embodiments of the present invention merely illustrate specific examples of the present invention, and the technical scope of the present invention should not be considered limited to these embodiments. That is, the present invention can be embodied in various forms without departing from the technical idea and its main features.

[0231] This application claims priority to Japanese Patent Application No. 2018-005096, filed on January 16, 2018, which is hereby incorporated by reference.

Claims

[1] Radiation imaging system (10), characterized by a radiation generating device (11) arranged to generate radiation to a subject, a radiation detection device (12) arranged to detect the radiation as an image signal, a camera device (14) arranged to record a video image relating to radiation imaging performed using the radiation in an imaging room, and a camera control device (15) which is arranged to control the camera device (14), wherein the camera control device (15) comprises a detection device (151) for detecting an imaging location at which the radiation imaging is performed, and a setting device (152) for setting a parameter of the camera device (14) according to the imaging location detected by the detection device (151). [2] The radiation imaging system (10) of claim 1, further characterized by a radiation imaging control device (13) arranged to control the radiation generating device (11) and the radiation detecting device (12), wherein the detection device (151) detects the imaging location based on information transmitted from the radiation imaging control device (13). [3] Radiation imaging system (10) according to claim 2, characterized by that the camera control device (15) further includes a manipulation device (155) for manipulating the video image and the information transmitted from the radiation imaging control device (13) in conjunction with each other. [4] Radiation imaging system (10) according to claim 2 or 3, further characterized by a variety of camera devices, whereby the camera control device (15) further includes a selection device (159) for selecting a camera device (14) from the plurality of camera devices based on the information transmitted from the radiation imaging control device (13). [5] Radiation imaging system (10) according to one of claims 2 to 4, characterized by that the radiation imaging control device (13) comprises a cooperation device (134) for cooperating with an external system (20) and receiving information regarding the radiation imaging from the external system (20), and a control device (133) for carrying out a control for transmitting the information obtained by the cooperation device (134) to the camera control device (15). [6] Radiation imaging system (10) according to one of claims 1 to 5, characterized bythat the detection means (151) performs processing of detecting the radiation detection device (12) from the video image and detects the imaging location according to a result of the detection. [7] Radiation imaging system (10) according to claim 6, characterized by that the detection device (151) performs the processing of detecting the radiation detection device (12) by detecting a marker attached to the radiation detection device (12). [8] Radiation imaging system (10) according to claim 6 or 7, characterized byin that the detection means (151) performs detection for setting the imaging location to a position of an imaging portion of the subject in a case where the radiation detection means (12) is successfully detected, and performs detection for setting the imaging location to a default position in a case where the radiation detection means (12) is not successfully detected. [9] Radiation imaging system (10) according to claim 6 or 7, characterized byin that the recognition device (151) further performs processing of detecting an imaging portion of the subject included in received information regarding radiation imaging, performs detection for setting the imaging location to a position of the imaging portion in a case where the radiation detection device (12) is successfully detected and the imaging portion is successfully detected, and performs detection for setting the imaging location to a default position in a case where the radiation detection device (12) is not successfully detected or in a case where the radiation detection device (12) is successfully detected but the imaging portion is not successfully detected. [10] Radiation imaging system (10) according to one of claims 1 to 5, characterized bythat the recognition device (151) performs processing of detecting the subject from the video image and recognizes the imaging location according to a result of the detection. [11] Radiation imaging system (10) according to claim 10, characterized by that the detection means (151) performs detection for setting the imaging location to a position of the subject in a case where the subject is successfully detected, and performs detection for setting the imaging location to a default position in a case where the object is not successfully detected. [12] Radiation imaging system (10) according to claim 11, characterized byin that the recognition device (151) further performs processing of detecting an imaging portion of the subject included in received information regarding the radiation imaging, performing recognition for setting the imaging location to a position of the imaging portion in a case where the imaging portion is successfully detected, and performing recognition for setting the imaging location to a position of the subject in a case where the imaging portion is not successfully detected. [13] Radiation imaging system (10) according to one of claims 1 to 12, characterized by , that the camera control device (15) further comprises a body movement detection device (1510) for detecting a body movement of the subject from the video image and a communication device (158) configured, in a case where a body movement of the subject is detected by the body movement detection device (1510), to transmit body movement detection information to a radiation imaging control device for controlling the radiation generation device (11) and the radiation detection device (12). [14] Camera control device (15) arranged to control a camera device (14) arranged to record a video image relating to radiation imaging for imaging a subject using radiation in an imaging room, characterized by a detection device (151) for detecting an imaging location at which the radiation imaging is performed in the imaging room, and a setting device (152) for setting a parameter of the camera device (14) according to the imaging location detected by the detection device (151). [15] Control method for controlling a camera device (14) for recording a video image with respect to radiation imaging for imaging an object using radiation in an imaging room, characterized by a detection step of detecting an imaging location at which the radiation imaging is performed in the imaging room, and a setting step of setting a parameter of the camera device (14) according to the imaging location detected in the detection step.

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