阅读说明：本技术 放射线摄影系统 (Radiation imaging system ) 是由 菅原将高 于 2020-04-08 设计创作，主要内容包括：本发明提供一种放射线摄影系统(10),其能够防止基于放射线工程师等的过度信赖,且能够适当地辅助按照摄影菜单的放射线摄影。放射线摄影系统(10)具备：相机(20),拍摄被摄体(Obj)；处理器；及显示器(45、52、61),处理器进行如下处理：识别使用相机(20)拍摄的相机图像中的被摄体(Obj)的配置与摄影菜单中的被摄体(Obj)的配置是否一致；在显示器(45、52、61)中进行表示存在识别结果的第1显示模式的显示,且当接收了明示性的识别结果的显示请求时,进行显示识别结果的内容的第2显示模式的显示。(The invention provides a radiography system (10) which can prevent excessive reliability based on a radiation engineer and the like and can appropriately assist radiography according to an radiography menu. A radiation imaging system (10) is provided with: a camera (20) for capturing an object (Obj); a processor; and a display (45, 52, 61), the processor performing the following processing: recognizing whether or not the arrangement of the subject (Obj) in a camera image captured using a camera (20) coincides with the arrangement of the subject (Obj) in a shooting menu; the display (45, 52, 61) displays the 1 st display mode indicating that the recognition result exists, and when a display request for a clear recognition result is received, displays the 2 nd display mode for displaying the content of the recognition result.)

1. A radiographic imaging system includes:

a radiation source that generates radiation;

a radiographic imaging section that photographs an object using the radiation;

a camera that photographs the subject arranged with respect to the radiographic imaging section;

a processor; and

a display device is arranged on the base plate,

the processor performs the following processing:

setting a shooting menu;

identifying whether a configuration of the object in a camera image captured using the camera coincides with a configuration of the object in the photographing menu;

displaying in the display a 1 st display mode indicating that the recognition result exists, and when a display request for the recognition result is received, displaying a 2 nd display mode displaying the content of the recognition result.

2. The radiography system according to claim 1,

the display is located in a blind area of the radiographic section.

3. The radiography system according to claim 1 or 2, wherein,

the display is disposed at the radiation source.

4. The radiography system according to any one of claims 1 to 3,

the display is a tablet terminal.

5. The radiography system according to any one of claims 1 to 4, comprising a plurality of the displays.

6. The radiography system according to claim 5,

the display devices are different in display mode of the recognition result.

7. The radiography system according to any one of claims 1 to 6,

the processor identifies whether an orientation of the object in a camera image coincides with an orientation of the object in the photographing menu.

8. The radiography system according to claim 7,

the processor identifies an orientation of the subject that faces the back toward the radiation source and an orientation of the subject that faces the abdomen toward the radiation source.

9. The radiography system according to any one of claims 1 to 8,

the processor identifies whether a photographing part of the object identified using the camera image coincides with a photographing part of the object in the photographing menu.

10. The radiography system according to any one of claims 1 to 9,

the processor displays, in the display, a warning indicating that the configuration of the object in the camera image does not coincide with the configuration of the object in the photographing menu.

11. The radiography system according to any one of claims 1 to 10,

the processor displays, in the display, configuration assistance information that assists in making the configuration of the subject in the camera image coincide with the configuration of the subject in the shooting menu.

12. The radiography system according to any one of claims 1 to 11,

the processor inhibits irradiation of the radiation when the arrangement of the subject in the camera image does not coincide with the arrangement of the subject in the shooting menu.

Technical Field

The present invention relates to a radiographic imaging system that photographs an object using radiation.

Background

Conventionally, a radiation imaging apparatus for imaging a subject using radiation such as X-rays has been widely used. For example, when the subject is a human or an animal, the radiographic image is used for diagnosis of lesions and the like.

The radiographic apparatus includes, for example, a radiation source that generates radiation, a radiographic panel that photographs a subject using radiation that has passed through the subject, and a console (console) that sets a photographing menu. The imaging menu is a menu related to radiography in which imaging conditions and the like are set in accordance with a request for radiography (an imaging command) received from a doctor or the like.

In recent years, the following X-ray image diagnostic apparatuses are known: a part of an object is determined using a camera image obtained by capturing an X-ray irradiation area with a camera, and irradiation of X-rays is permitted only when the determined part matches a capturing condition (patent document 1). Further, there is known a radiographic imaging apparatus: when a subject's breast is radiographed, whether the imaging part is the right breast or the left breast is determined based on the orientation of the subject's face, and when the determined left and right of the imaging part do not match the left and right of the imaging part set in the imaging menu, the operator is notified of the fact (patent document 2).

Prior art documents

Patent document

Patent document 1: japanese patent laid-open publication No. 2016-097225

Patent document 2: japanese patent laid-open publication No. 2012-010772

Disclosure of Invention

Technical problem to be solved by the invention

Radiography requires setting or selection of an imaging menu, and is appropriately performed according to the imaging menu for setting or the like. This is to provide an appropriate radiographic image corresponding to the imaging order to diagnosis or the like.

However, when radiography is actually performed, radiography may be performed so that the orientation of the subject or the like does not match the imaging menu. In this case, the obtained radiation image does not become an image corresponding to the imaging order, and thus diagnosis or the like may not be appropriately performed. For example, when a radiographic image obtained by PA (Posterior-Anterior) imaging is provided for an imaging command that requires AP (Anterior-Posterior) imaging of the chest of a specific subject as a subject, the diagnosis may cause erroneous recognition of the right and left sides of the disease position and/or erroneous recognition of visceral dislocation.

Therefore, the radiation imaging system may assist the imaging by determining whether or not the imaging region or the like is correct, but the radiation engineer or the doctor (hereinafter, referred to as a radiation engineer) may excessively rely on the assistance from the radiation imaging system. For example, the result of the determination of the auxiliary imaging or the like has a certain accuracy, but the possibility of outputting a recognition result with low accuracy cannot be completely excluded in a real concrete situation. However, the radiation engineer or the like may exclude the result of the determination or the like as a default. If such excessive reliability occurs, the support of the radiation imaging system is received, and imaging according to the imaging menu cannot be performed.

The invention aims to provide a radiation imaging system which can prevent excessive reliability of radiation engineers and the like and can appropriately assist radiation imaging according to an imaging menu.

Means for solving the technical problem

A radiation imaging system includes a radiation source, a radiation imaging unit, a camera, a processor, and a display. The radiation source generates radiation. The radiation imaging section images an object using radiation. The camera captures an object arranged with respect to the radiation imaging section. The processor performs the following processing: setting a shooting menu; identifying whether a configuration of subjects in a camera image captured using a camera coincides with a configuration of subjects in a photographing menu; a display of a 1 st display mode indicating that the recognition result exists is performed in the display, and when a display request of an explicit recognition result is received, a display of a 2 nd display mode displaying the content of the recognition result is performed.

Preferably, the display is located in a blind area of the radiographic section.

Preferably, the display is located at the source.

Preferably the display is a tablet terminal.

Preferably, a plurality of displays are provided.

Preferably, the display modes of the recognition results are different among the plurality of displays.

Preferably, the processor recognizes whether or not the orientation of the object in the camera image coincides with the orientation of the object in the shooting menu.

Preferably, the processor recognizes the orientation of the object with the back facing the radiation source and the orientation of the object with the abdomen facing the radiation source.

Preferably, the processor recognizes whether or not a photographing part of the subject recognized using the camera image coincides with a photographing part of the subject in the photographing menu.

Preferably, the processor displays a warning in the display indicating that the arrangement of the objects in the camera image does not coincide with the arrangement of the objects in the shooting menu.

Preferably, the processor displays, in the display, configuration assistance information that assists in making the configuration of the object in the camera image coincide with the configuration of the object in the shooting menu.

It is preferable that the processor inhibits irradiation of radiation when the arrangement of the subjects in the camera image does not coincide with the arrangement of the subjects in the shooting menu.

Effects of the invention

The invention provides a radiation imaging system which can prevent excessive reliability of radiation engineer and can properly assist radiation imaging according to an imaging menu.

Drawings

Fig. 1 is an explanatory diagram showing a configuration of a radiographic imaging system.

Figure 2 is a block diagram of a radiation source.

Fig. 3 is a block diagram of a console.

Fig. 4 is a block diagram of a tablet terminal.

Fig. 5 is a flowchart of radiography.

Fig. 6 is an explanatory diagram showing a display mode of the console.

Fig. 7 is an explanatory diagram showing a display mode of the console after radiography.

Fig. 8 is an explanatory diagram showing a display mode of the console in the 1 st display mode.

Fig. 9 is an explanatory diagram showing a display mode of the console in the 2 nd display mode.

Fig. 10 is an explanatory diagram showing a display mode of the 1 st display mode in the display of the radiation source.

Fig. 11 is an explanatory diagram showing a display mode of the 2 nd display mode in the display of the radiation source.

Fig. 12 is an explanatory diagram showing a display mode of the tablet terminal in the 1 st display mode.

Fig. 13 is an explanatory diagram showing a display mode of the tablet terminal in the 2 nd display mode.

Fig. 14 is an explanatory diagram of a radiographic system according to a modification.

Fig. 15 is a block diagram showing a configuration of a console in a modification.

Fig. 16 is a block diagram of a console in a modification including an irradiation range estimation unit and a display view angle determination unit.

Fig. 17 is an explanatory view showing an irradiation range of radiation and a display angle of view.

Fig. 18 is an explanatory diagram showing a display mode after changing the display angle of view.

Detailed Description

As shown in fig. 1, the radiation imaging system 10 includes a radiation source 13, a radiation imaging unit 14, a camera 20, a console 30, a tablet terminal 31, and the like. The radiation source 13, the radiation imaging unit 14, and the console 30 constitute a radiation imaging apparatus.

The radiation source 13 generates radiation Ra used for radiography. Therefore, as shown in fig. 2, the radiation source 13 includes a radiation tube 41 that generates radiation Ra, a high-voltage generation circuit 42 that generates a high voltage required for the radiation tube to generate radiation Ra, and the like. The radiation source 13 can generate a plurality of types of radiation having different radiation qualities (i.e., energy distributions) by adjusting the tube voltage, the tube current, and the like of the radiation tube 41. The energy of the radiation Ra generated by the radiation source 13 is one of the imaging conditions. In the present embodiment, the radiation source 13 is an X-ray source that generates X-rays. Therefore, the radiographic system 10 is an X-ray imaging system that acquires an X-ray image of the object Obj by imaging the object Obj using X-rays. The object Obj is, for example, a human.

In the present embodiment, the radiation source 13 includes an irradiation range display unit 43, a display 45, and an operation unit 46. The irradiation range display unit 43 projects an image indicating an irradiation position and/or range (so-called irradiation range or irradiation field, hereinafter referred to as irradiation range) of the radiation Ra onto the object Obj or the like. Thereby, the irradiation range display section 43 displays the irradiation range of the radiation Ra.

The display 45 is a display for displaying an imaging menu and the like on the radiation source 13, and is separate from the console 30. As will be described later, in the present embodiment, the display 45 displays the recognition result recognized by the recognition unit 54 (see fig. 3) and the content of the recognition result at least when the arrangement of the objects Obj in the camera image does not match the arrangement of the objects Obj in the shooting menu. The display 45 displays the 1 st display mode indicating that the recognition result is present (see fig. 10), and when a display request for an explicit recognition result is received, displays the 2 nd display mode for displaying the content of the recognition result (see fig. 11). The "explicit" display request means that there is an input of an operation, setting, or the like to the radiographic imaging system 10 according to the meaning, judgment, or the like of a radiation engineer or the like.

The operation unit 46 is a physical button, a switch, a GUI (graphical user interface), or the like, and the operation unit 46 can be used to switch the irradiation range of the radiation Ra on and off, set the tube voltage of the radiation tube 41, or the like, for example. Further, the "display request of the recognition result" for explicitly requesting the display of the content of the recognition result can be input using the operation unit 46. The display 45 and the operation unit 46 may be integrated and formed of a touch panel.

The radiation imaging section 14 images an object Obj using radiation Ra generated by the radiation source 13. The radiation imaging unit 14 includes a so-called radiation Detector, for example, an FPD (Flat Panel Detector). The FPD detects the radiation Ra transmitted through the object Obj and converts it into an electric signal, thereby outputting a radiographic image of the object Obj. In the imaging using the radiation imaging unit 14, a grid (not shown) can be used in combination as necessary. The grid is a device for removing scattered radiation components of radiation, and is, for example, a fixed-type lesholm grating, a movable-type horizontal stop, or the like. In the present embodiment, the radiation imaging section 14 includes one radiation detector and outputs one radiation image by irradiation of the radiation Ra at a time, but the radiation imaging section 14 may include a plurality of radiation detectors. When the radiation imaging section 14 includes a plurality of radiation detectors, the radiation imaging section 14 can output a plurality of radiation images by irradiation of the radiation Ra at one time.

The radiation detector included in the radiation imaging section 14 may be either an indirect conversion type radiation detector or a direct conversion type radiation detector. When the radiation imaging section 14 includes a plurality of radiation detectors, a plurality of different types of radiation detectors can be used in combination. The indirect conversion type radiation detector is a detector that converts radiation Ra into visible light using a scintillator made of CsI (cesium iodide) or the like, and photoelectrically converts the visible light to indirectly obtain an electrical signal. The direct conversion type radiation detector is a detector that directly converts radiation Ra into an electric signal using a scintillator made of amorphous selenium or the like. The radiation detectors included in the radiation imaging unit 14 may be PSS (transmission Side Sampling) type radiation detectors or ISS (Irradiation Side Sampling) type radiation detectors. The PSS method is a method in which a scintillator is disposed on the object Obj side of a TFT (Thin Film Transistor) for reading an electric signal. The ISS method is a method in which a scintillator and a TFT are arranged in the order of the TFT and the scintillator from the object Obj side, contrary to the PSS method.

The camera 20 images an object Obj disposed to the radiographic imaging section 14 using visible light, infrared light, or the like (light having a wavelength or energy distribution different from the radiation Ra). More specifically, the camera 20 is, for example, a digital still camera or a digital video camera. The imaging range SR of the camera 20 includes at least an irradiation range of the radiation Ra. In the radiographic imaging system 10, an image (a moving image that is an aggregate including still images, hereinafter referred to as a camera image) captured using the camera 20 is used for recognition of the object Obj arrangement in radiography. Therefore, the camera image includes at least a part or all of the irradiation range of the radiation Ra to such an extent that the recognition processing can be performed. In the present embodiment, the camera 20 is a digital video camera, and captures an object Obj using visible light. The arrangement of the camera 20 is arbitrary within a range in which the subject Obj can be imaged in the irradiation range of the radiation Ra, but in the present embodiment, the camera is provided substantially integrally with the radiation source 13. This is to reliably image the object Obj placed within the irradiation range of the radiation Ra without excess or deficiency to such an extent that the above-described recognition processing can be performed.

The console 30 is a main control device (so-called computer) of the radiation imaging system 10, and includes a processor, for example, an imaging menu setting menu. As shown in fig. 3, the console 30 includes a shooting menu setting unit 51, a display 52, an operation unit 53, a recognition unit 54, a control unit 56, and the like. In the console 30, programs related to processing and the like of the photographing menu setting unit 51, the display 52, the operation unit 53, the recognition unit 54, the control unit 56, and the like are programmed into a memory (not shown). The functions of the photographing menu setting unit 51, the display 52, the operation unit 53, the recognition unit 54, the control unit 56, and the like are realized by operating a program by a central control unit (not shown) including a processor.

The imaging menu setting unit 51 obtains an imaging command from an RIS (Radiology Information Systems) 58, an HIS (Hospital Information Systems) 59, or other external Systems by manual input. Then, a shooting menu corresponding to the acquired shooting command is set. The imaging command is a request for radiography, and includes information for specifying the object Obj (an identification number of the subject being the object Obj) and information for specifying an imaging part and an imaging direction of the object Obj, for example. The shooting menu is a menu indicating specific shooting items, and is set according to a shooting command. For example, when the shooting command is "to request the shooting of a specific object Obj for one chest (P → a) and one chest (a → P), respectively", the shooting menu setting unit 51 sets "chest (P → a)" and "chest (a → P)" as the shooting menus for the specific object Obj. The "chest front side (P → a)" is a menu for capturing the chest of the object Obj from the front side by irradiating the radiation Ra from the rear surface (Posterior) toward the front surface (antrerior) of the object Obj. Further, "chest front side (a → P)" is a menu for imaging the chest of the object Obj from the front side by irradiating the radiation Ra from the front surface toward the rear surface of the object Obj.

The display 52 is, for example, a liquid crystal display or the like, and performs necessary display related to other operations, settings, and the like of the captured radiographic image. For example, the display 52 displays the recognition result recognized by the recognition unit 54 and the content of the recognition result at least when the arrangement of the object Obj in the camera image does not match the arrangement of the object Obj in the shooting menu. The display 52 displays the 1 st display mode indicating that the recognition result is present (see fig. 8), and when a display request for an explicit recognition result is received, displays the 2 nd display mode for displaying the content of the recognition result (see fig. 9).

The operation unit 53 is, for example, a keyboard and a pointing device used for setting input of imaging conditions and the like and operation of the radiation source 13 and the radiation imaging unit 14. Further, the "display request of the recognition result" for explicitly requesting the display of the content of the recognition result can be input using the operation unit 53. The display 52 and the operation unit 53 can be formed of a touch panel.

The recognition unit 54 recognizes whether or not the arrangement of the objects Obj in the camera image captured using the camera 20 matches the arrangement of the objects Obj in the shooting menu. The arrangement of the object Obj in the camera image refers to the arrangement of the object Obj recognized using the camera image. The arrangement of the object Obj in the shooting menu is the arrangement of the object Obj specified in the shooting menu. For example, when the shooting menu is "chest front (P → a)", "P → a" is the arrangement of the object Obj. That is, the rear surface (the surface on the back side) is directed toward the radiation source 13, and the front surface (the surface on the abdominal side) is directed toward the object Obj in the radiographic section 14, and the object Obj is arranged in the photographic menu of "chest front (P → a)".

The imaging range in radiography is determined according to the relative positional relationship between the radiation source 13 and the radiation imaging unit 14. Specifically, the overlapping portion of the irradiation range of the radiation Ra and the effective imaging range (range in which effective pixels contributing to a radiographic image are arranged) of the radiographic imaging unit 14 is the imaging range in radiography. The arrangement (positioning) of the object Obj refers to the position and/or orientation of the object Obj within the "imaging range". The portion of the object Obj within the imaging range is the imaging part of the object Obj. The orientation of the object Obj within the imaging range is a direction (imaging direction) in which the imaging region is imaged, and is an irradiation direction of the radiation Ra with respect to the imaging region. In the present embodiment, the recognition unit 54 recognizes at least whether or not the orientation of the object Obj in the camera image matches the orientation of the object Obj in the shooting menu.

Further, the recognition of the object Obj in the camera image can be performed using features relating to the shape of the whole or part of the object Obj. For example, when the object Obj is a person and the face of the object Obj is included in the camera image, the object Obj can be recognized in the camera image by determining the position, orientation, and the like of the face of the object Obj. The recognition unit 54 can be realized by an AI (artificial intelligence) program that performs training by machine learning or the like.

The control unit 56 centrally controls the operation of the radiation imaging system 10. For example, when the arrangement of the objects Obj in the camera image does not coincide with the arrangement of the objects Obj in the shooting menu, the control section 56 prohibits the irradiation of the radiation Ra. As a result, execution of radiography is prohibited. This is to prevent in advance and reliably that radiography is performed in a state where there is an error (positioning error) in the arrangement of the object Obj, and as a result, to prevent erroneous recognition of a disease position or the like in diagnosis. The "prohibition" with respect to the irradiation of the radiation Ra means a case where the radiation Ra is not irradiated although an instruction input from a radiation engineer or the like is received, and includes a case where the radiation Ra is not irradiated as a result of not receiving an instruction input concerning the irradiation of the radiation Ra, not generating the radiation Ra, not performing a preparatory operation for generating the radiation Ra, and the like. For example, the control section 56 prohibits the irradiation of the radiation Ra by disabling a GUI switch, locking a mechanical switch, or the like.

The control unit 56 controls the display contents and display modes of the display 45 of the radiation source 13, the display 52 of the console 30, and the display 61 (see fig. 4) of the tablet terminal 31. For example, when at least the arrangement of the objects Obj in the camera image does not match the arrangement of the objects Obj in the shooting menu, the recognition result (or the content of the recognition result) recognized by the recognition unit 54 is displayed on at least the display 45 of the radiation source 13 and the display 61 of the tablet terminal 31, which are displays separate from the console 30. In the present embodiment, when the arrangement of the objects Obj in the camera image does not match the arrangement of the objects Obj in the shooting menu, the control unit 56 displays the 1 st display mode indicating that the recognition result exists on the display 45 of the radiation source 13, the display 52 of the console 30, and the display 61 of the tablet terminal 31.

In addition, when receiving the "display request of the recognition result" input using the operation unit 46 of the radiation source 13, the control unit 56 switches the display mode of the display 45 of the radiation source 13 from the 1 st display mode to the 2 nd display mode. That is, the control unit 56 receives the "display request of the recognition result" from the operation unit 46 using the radiation source 13, and displays the content of the recognition result on the display 45 of the radiation source 13. When receiving the "display request of the recognition result" input using the operation unit 53 of the console 30, the control unit 56 switches the display mode of the display 52 of the console 30 from the 1 st display mode to the 2 nd display mode. That is, the control unit 56 receives the "display request of the recognition result" using the operation unit 53 of the console 30, and displays the content of the recognition result on the display 52 of the console 30. Similarly, when receiving the "display request of the recognition result" input using the operation unit 62 of the tablet terminal 31, the control unit 56 switches the display form of the display 61 of the tablet terminal 31 from the 1 st display mode to the 2 nd display mode. That is, the control unit 56 receives the "display request of the recognition result" using the operation unit 53 of the console 30, and displays the content of the recognition result on the display 61 of the tablet terminal 31.

The tablet terminal 31 is a sub-control device of the radiographic system 10. The tablet terminal 31 can be transported, and can perform a part or all of setting, control, and/or display using the console 30, the operation unit 46 of the radiation source 13, and the like. Therefore, when the arrangement of the object Obj is adjusted in the vicinity of the radiation source 13 and/or the radiographic unit 14, the tablet terminal 31 can be used in place.

As shown in fig. 4, the tablet terminal 31 includes a display 61 and an operation unit 62, and communicates with the radiation source 13, the radiographic imaging unit 14, and/or the console 30 as necessary. The display 61 is separate from the console 30, and displays a camera image, a radiographic image, and other images (including moving images), a setting screen and a control screen (such as GUI) for controlling the radiographic imaging system 10, and the like. The display 61 displays the recognition result recognized by the recognition unit 54 or the content of the recognition result at least when the arrangement of the object Obj in the camera image does not match the arrangement of the object Obj in the shooting menu. Then, the display 61 displays the 1 st display mode indicating that the recognition result exists (see fig. 12), and when a display request for an explicit recognition result is received, displays the 2 nd display mode for displaying the content of the recognition result (see fig. 13).

The operation unit 62 is an input device used for setting input of imaging conditions and the like and operation of the radiation source 13 and the radiation imaging unit 14. Further, the "display request of the recognition result" for explicitly requesting the display of the content of the recognition result can be input using the operation unit 62. The display 61 and the operation unit 62 can be configured using a touch panel, for example.

A flow of radiography using the radiography system 10 configured as described above will be described. As shown in fig. 5, the photographing menu setting unit 51 acquires a photographing command automatically or by manual input, and sets a photographing menu corresponding to the acquired photographing command (step S101). The shooting menu set by the shooting menu setting unit 51 is displayed on the display 52 of the console 30 (see fig. 6 and the like), for example. Therefore, the radiation engineer or the like selects an imaging menu to be executed next using the operation unit 53 of the console 30 or the like (step S102). Then, the radiation engineer or the like arranges the object Obj according to the selected imaging menu (step S103). Selection of the imaging menu and arrangement of the object Obj are used to perform preparation for imaging by a radiation engineer or the like. The "arrangement of the object Obj" performed by the radiation engineer or the like includes selection of the radiation source 13 and/or the radiographic imaging unit 14, and adjustment of the position or orientation.

On the other hand, in parallel with the above-described arrangement operation of the object Obj, the radiographic imaging system 10 images the object Obj arranged to the radiographic imaging section 14 by the camera 20, and acquires a camera image (step S104). Thus, the recognition unit 54 can obtain information of the selected shooting menu (executed shooting menu) and a camera image in which the object Obj is shot. Therefore, the recognition unit 54 recognizes whether or not the arrangement of the objects Obj in the camera image captured using the camera 20 matches the arrangement of the objects Obj in the shooting menu (step S105).

When the arrangement of the subjects Obj in the camera image coincides with the arrangement of the subjects Obj in the photographing menu (step S106: yes), the radiography system 10 performs radiography by inputting an instruction to perform photographing by a radiation engineer or the like (step S107). On the other hand, when the arrangement of the objects Obj in the camera image does not match the arrangement of the objects Obj in the shooting menu (step S106: no), the control unit 56 displays the recognition result in the recognition unit 54 on the display 45 of the radiation source 13, the display 52 of the console 30, and the display 61 of the tablet terminal 31 in a display manner indicating the 1 st display mode in which the recognition result exists (step S108), and the control unit 56 prohibits the irradiation of the radiation Ra (step S109).

Here, when the radiation engineer or the like inputs a display request of the recognition result using the operation unit 46 of the radiation source 13, the operation unit 53 of the console 30, and/or the operation unit 62 of the tablet terminal 31 (step S110: yes), the control unit 56 switches the display mode of the display 45 of the radiation source 13, the display 52 of the console 30, and/or the display 62 of the tablet terminal 31 from the display of the 1 st display mode to the display of the 2 nd display mode in accordance with the operation unit that has input the display request of the recognition result. Thereby, the display 45 of the radiation source 13, the display 52 of the console 30, and/or the display 62 of the tablet terminal 31 display the content of the recognition result (step S111).

The radiation engineer or the like can estimate that there is a certain trouble in radiography such as the possibility that the arrangement of the objects Obj in the camera image does not match the arrangement of the objects Obj in the shooting menu by observing the display in the 1 st display mode. Further, the radiation engineer or the like can know that the arrangement of the objects Obj in the camera image does not match the arrangement of the objects Obj in the shooting menu, specifically, by observing the display in the 2 nd display mode. Therefore, after observing the display in the 1 st display mode or the display in the 2 nd display mode, the radiation engineer or the like arranges the objects Obj so that the arrangement of the objects Obj in the camera image matches the arrangement of the objects Obj in the shooting menu by adjusting the arrangement of the objects Obj (step S103). This enables the radiography in accordance with the radiography menu to be executed accurately (step S107).

The display of the 1 st display mode and the display of the 2 nd display mode in the display 52 of the console 30, the display 45 of the radiation source 13, and the display 61 of the tablet terminal 31 are performed as follows.

< display of Console >

First, as shown in fig. 6, the display 52 of the console 30 includes, for example, a shooting menu display area 101 and an image display area 102. The shooting menu display area 101 displays the shooting menu set by the shooting menu setting unit 51. When the shooting menu setting unit 51 sets a plurality of shooting menus in response to one shooting command, the shooting menu display area 101 displays the plurality of shooting menus. In the present embodiment, the photographing command is a "photographing request for each of the front (P → a) and front (a → P) of the chest" of a specific subject (object Obj), and the photographing menu setting unit 51 automatically sets two photographing menus, i.e., the 1 st photographing menu 111 for photographing the chest of the object Obj in the front-to-back (P → a) direction and the 2 nd photographing menu 112 for photographing the chest of the object Obj in the front-to-back (a → P) direction, in accordance with the one photographing command. Therefore, the display 52 of the console 30 displays the 1 st photographing menu 111 and the 2 nd photographing menu 112.

As one of the preparation for imaging, the radiation engineer or the like selects an imaging menu to be executed from one or more imaging menus displayed in the imaging menu display area 101 using the operation unit 53 or the like. The control unit 56 displays the shooting menu in the selected state and the shooting menu in the unselected state in the shooting menu display area 101 so as to be distinguishable from each other. For example, fig. 6 shows an example in which the 1 st photographing menu 111 is in a selected state and the 2 nd photographing menu 112 is in a non-selected state. Therefore, in fig. 6, the next radiography is the shooting of "chest front (P → a)" in the 1 st shooting menu 111.

The image display area 102 appropriately displays a camera image and a captured radiographic image. Before the radiography is performed, the image display area 102 displays a camera image. In fig. 6, in the camera image 103 displayed in the image display region 102, the object Obj has the abdomen facing the radiographic imaging unit 14 and the back facing the radiation source 13 and the camera 20. That is, in the camera image 103, the object Obj is in an arrangement of "P → a".

Here, since the arrangement of the object Obj in the camera image 103 and the arrangement of the object Obj in the selected 1 st imaging menu 111 are both "P → a", radiography can be directly performed. Therefore, the radiation imaging system 10 performs imaging by inputting an instruction to perform imaging by a radiation engineer or the like. Further, after the radiography is performed, as shown in fig. 7, the display 52 of the console 30 displays the captured radiographic image 113 in the image display area 102. The radiation image 113 is a radiation image in which the chest of the object Obj is imaged from the front in the "P → a" direction.

On the other hand, as described above, although the 1 st imaging menu 111 having the imaging direction "P → a" is in the selected state, as shown in fig. 8, the subject Obj may face the abdomen toward the radiation source 13 and the camera 20 and the back toward the radiation imaging unit 14 in the camera image 123. That is, in the camera image 123, the configuration of the object Obj is "a → P". In this case, the recognition unit 54 recognizes that the arrangement of the object Obj in the camera image 123 does not coincide with the arrangement of the object Obj in the 1 st photographing menu 111 in the selected state. Therefore, the control unit 56 sets, for example, a recognition result display area 133 overlapping the camera image 123 on the display 52 of the console 30. In the recognition result display area 133, for example, a marker 135 or the like (including an icon functioning as a GUI, an assistant character imitating a radiation engineer, or other notification) represented by a color, a shape, a pattern, or a change (movement) thereof or by another visual means is used to display that the recognition result recognized by the recognition unit 54 exists. Which is the display of the 1 st display mode in the display 52 of the console 30.

In the present embodiment, for example, the mark 135 is formed by a clickable GUI. Then, the control unit 56 receives a click of the mark 135 or the like as a display request of a clear recognition result. Therefore, as shown in fig. 9, when the mark 135 or the like is clicked in the console 30, the display 52 of the console 30 displays the specific content of the recognition result, for example, in the form of a warning 201 such as "the positioning seems to be different from the selected [ chest front (P → a) ].

< display of radiation Source >

Generally, the display area or the like of the display 45 of the radiation source 13 is different from the display 52 of the console 30. Therefore, even when the common content is displayed, the display mode of the recognition result and the like on the display 45 of the radiation source 13 is electrically different from the display mode of the display 52 of the console 30. For example, as shown in fig. 10, the display 45 of the radiation source 13 has an imaging menu display area 141 and a recognition result display area 142 at least before the execution of the radiography. The shooting menu display area 141 displays the shooting menu in the selected state. This is to allow the selected imaging menu to be confirmed in the vicinity of the radiation source 13 (the range in which the display 45 of the radiation source 13 can be viewed). In fig. 10, the shooting menu in the selected state is the 1 st shooting menu 111. The recognition result display area 142 displays the presence of the recognition result recognized by the recognition unit 54 using a mark 135 or the like. Which is the display of the 1 st display mode in the display 45 of the radiation source 13.

When there is no selected shooting menu or before the shooting menu is set, the shooting menu display area 141 displays the selected shooting menu. Further, when there is no selected shooting menu or before the shooting menu is set, the shooting menu display area 141 displays nothing, and thus it is possible to display that there is no selected shooting menu or that the setting (selection) of the shooting menu is not performed. In the present embodiment, when the recognition result is a recognition result in which the arrangement of the objects Obj in the camera image matches the arrangement of the objects Obj in the selected shooting menu, nothing is displayed in the recognition result display area 142. Thus, the recognition result display area 142 relatively increases the level of attention (the ease of attracting attention of the radiation engineer or the like) of the marker 135 or the like, as compared with the case where some kind of display is intermittently or continuously performed. The mark 135 and the like displayed in the recognition result display area 142 may be the same as or different from the mark 135 and the like displayed in the recognition result display area 133 and the like of the console 30. When the same or similar mark 135 or the like as the recognition result display area 133 or the like of the console 30 is displayed, the meaning and/or importance of the mark 135 or the like displayed in the recognition result display area 142 can be easily known by the radiation engineer or the like based on the identity or the similarity of the display mode. On the other hand, when a mark 135 or the like different from the recognition result display area 133 or the like of the console 30 is displayed in the recognition result display area 142, the meaning content, importance, or the like of the mark 135 or the like may be displayed in an easily understandable manner depending on the display area or the like.

In the present embodiment, the marker 135 and the like are also configured by a clickable GUI on the display 45 of the radiation source 13. Therefore, the control unit 56 receives a click of the mark 135 or the like as a display request of a clear recognition result. Further, as shown in fig. 11, when the marker 135 or the like is clicked on the radiation source 13, the display 45 of the radiation source 13 displays the specific content of the recognition result, for example, as a warning 201. Which is the display of the 2 nd display mode in the display 45 of the radiation source 13.

< display of tablet terminal >

Generally, the display area or the like of the display 61 of the tablet terminal 31 is different from the display 52 of the console 30 and/or the display 45 of the radiation source 13. Therefore, even in the case of displaying the content common to the display 52 of the console 30 and/or the display 45 of the radiation source 13, the display form of the recognition result and the like in the display 61 of the tablet terminal 31 is different from the display form of the display 52 of the console 30 and/or the display 45 of the radiation source 13.

For example, as shown in fig. 12, the display 61 of the tablet terminal 31 has an imaging menu display area 151 and an image display area 152 at least before radiography is performed. The shooting menu display area 151 displays a shooting menu in a selected state. This is to enable the selected shooting menu to be confirmed at an arbitrary position using the tablet terminal 31. In fig. 12, the shooting menu in the selected state is the 1 st shooting menu 111.

The image display area 152 displays a camera image. Further, when the recognition result of the recognition section 54 is a recognition result in which the arrangement of the objects Obj in the camera image does not coincide with the arrangement of the objects Obj in the selected shooting menu, the control section 56 sets a recognition result display area 153 that overlaps the image display area 152. In the recognition result display area 153, a mark 135 or the like is used to display the fact that the recognition result recognized by the recognition unit 54 is notified. In fig. 12, the arrangement ("a → P") of the object Obj in the camera image 123 does not coincide with the arrangement ("P → a") of the object Obj in the 1 st photographing menu 111 in the selected state. Therefore, by displaying the mark 135 in the recognition result display area 153, it is displayed that the recognition result recognized by the recognition unit 54 exists. Which is the display of the 1 st display mode in the display 61 of the tablet terminal 31. In addition, after the radiography is performed, the image display region 152 can display the captured radiographic image.

In the present embodiment, for example, the mark 135 and the like are also configured by a clickable GUI on the display 61 of the tablet terminal 31. Therefore, the control unit 56 receives a click of the mark 135 or the like as a display request of a clear recognition result. Also, as shown in fig. 13, when the mark 135 or the like is clicked in the tablet terminal 31, the display 61 of the tablet terminal 31 displays the specific content of the recognition result in the form of a warning 201, for example. Which is the display of the 2 nd display mode in the display 61 of the tablet terminal 31.

As described above, the radiographic imaging system 10 displays the specific content of the recognition result when there is an explicit request through the display of the mark 135 or the like in which the specific content of the recognition result is omitted. Therefore, the radiographic imaging system 10 can assist the execution of radiographic imaging according to the imaging menu using the recognition result of the recognition unit 54, and can prevent the radiation engineer or the like from excessively relying on the recognition result of the recognition unit 54. This is because, as a result of the determination by the radiation engineer or the like, the radiographic system 10 displays the specific contents of the recognition result only when necessary, and therefore the radiation engineer or the like has to check the accuracy of the arrangement of the object Obj or the like before receiving the presentation of the contents of the recognition result.

The radiographic imaging system 10 displays the presence of the recognition result recognized by the recognition unit 54 and the specific contents of the recognition result (hereinafter, referred to as the recognition result and the like) not only on the display 52 of the console 30 but also on the display 45 of the radiation source 13 and the display 61 of the tablet terminal 31. Therefore, when using the radiation imaging system 10, the radiation engineer or the like can know that there is a possibility of an error in the arrangement of the object Obj at the position where the object Obj is arranged without returning to the position where the console 30 is located by observing the display of the recognition result or the like in the display 45 of the radiation source 13 or the display 61 of the tablet terminal 31. As a result, it is possible to prevent an arrangement error of the object Obj and to smoothly perform radiography.

The radiographic imaging system 10 includes a plurality of displays that are separate from the console 30 and that display the recognition results and the like. Therefore, even when the radiation engineer or the like moves for the arrangement of the object Obj, there are many opportunities that the recognition result or the like can be quickly and easily known at the position after the movement. Therefore, the radiographic imaging system 10 can almost reliably prevent the arrangement error of the object Obj in advance, and can smoothly perform radiographic imaging.

In the radiographic imaging system 10, the display modes of the recognition results of the plurality of displays that are separate from the console 30, such as the recognition results, are different. Specifically, the display 45 of the radiation source 13 displays the marker 135 and the like without displaying the camera image, and the display 61 of the tablet terminal 31 displays the marker 135 and the like in addition to the camera image. Therefore, the possibility of an arrangement error of the object Obj can be appropriately and effectively notified according to the display area of each display or the like.

The radiographic imaging system 10 recognizes whether or not the orientation of the object Obj in the camera image matches the orientation of the object Obj in the imaging menu, and does not provide a radiographic image for diagnosis when the orientation of the object Obj in the camera image does not match the orientation of the object Obj in the imaging menu. Therefore, it is possible to prevent the misrecognition of the positions of organs, diseases, and the like in the object Obj such as the misrecognition of the internal organ and the misrecognition of the left and right disease positions. In particular, in the above embodiment, the recognition unit 54 recognizes the orientation of the object Obj with the back facing the radiation source 13 and the orientation of the object Obj with the abdomen facing the radiation source 13. Therefore, for example, it is possible to prevent the erroneous recognition of the left-right inversion of the object Obj, which is not easily perceived when a plurality of radiographic images are observed during the examination or the like.

In the above embodiment, the recognition unit 54 recognizes whether or not the orientation of the object Obj recognized using the camera image matches the imaging location of the object Obj in the imaging menu, but the recognition unit 54 can recognize whether or not the imaging location of the object Obj recognized using the camera image matches the imaging location of the object Obj in the imaging menu in addition to or instead of the recognition of the orientation of the object Obj. When the imaging region of the object Obj recognized using the camera image does not match the imaging region in the imaging menu, the control unit 56 can display a warning or the like on the display 45 of the radiation source 13 at this stage to notify that there is a possibility of an error in the arrangement of the object Obj. As a result, it is possible to prevent an unnecessary imaging region from being erroneously imaged, which does not correspond to the imaging menu, and to smoothly perform the necessary radiography, which corresponds to the imaging menu.

In the above-described embodiment, the recognition result and the like are displayed on the display 52 of the console 30 in addition to the display 45 of the radiation source 13 and the display 61 of the tablet terminal 31, but when the recognition result and the like are displayed on the display 45 of the radiation source 13 or the display 61 of the tablet terminal 31, the display of the recognition result and the like on the display 52 of the console 30 may be omitted. This is because the radiation engineer or the like can adjust the arrangement of the object Obj by observing the display of the display 45 of the radiation source 13 or the display 61 of the tablet terminal 31 without returning to the console 30. In contrast, even if the display 45 of the radiation source 13 or the display 61 of the tablet terminal 31 is provided when the recognition result or the like is displayed on the display 52 of the console 30, the display of the recognition result or the like on the display 45 of the radiation source 13 and/or the display 61 of the tablet terminal 31 can be omitted when the recognition result or the like is displayed on the display 52 of the console 30. This is because the radiation engineer or the like basically performs control of radiography using the console 30.

In the above-described embodiment, the warning 201 indicating the specific content of the recognition result is displayed in the 2 nd display mode, but the radiographic system 10 can display the arrangement assisting information that assists the arrangement of the object Obj in the camera image to coincide with the arrangement of the object Obj in the photographing menu, together with the display of the warning 201 indicating the specific content of the recognition result, or instead of the display of the warning 201 indicating the specific content of the recognition result. The arrangement support information is information indicating the direction and distance of relative movement or rotation of the object Obj, the radiation source 13, or the radiographic unit 14, or the posture of the object Obj (the degree of flexion of the joints, etc.). Specifically, the message "please direct the abdomen of the object Obj to the radiation source 13 side" or the like.

The radiographic imaging system 10 can display the warning 201 and the placement support information without displaying the marker 135 or the like. If the recognition result is not excessively reliable, the warning 201 and/or the arrangement support information are directly displayed without passing through the display of the mark 135 or the like, so that the radiation engineer or the like can more easily and quickly recognize the content of the warning 201, and as a result, accurate radiography can be smoothly performed.

In the above embodiment, the radiographic imaging system 10 displays the content of the recognition result when receiving the display request of the explicit recognition result, but instead of the display request of the explicit recognition result, it is possible to perform the display in the 2 nd display mode in which the content of the recognition result is displayed when a certain time (for example, several seconds to several tens of seconds) defined by the setting has elapsed. In this case as well, the radiation engineer or the like has to check the accuracy of the arrangement of the object Obj and the like in person until the specific content of the recognition result is displayed, as in the case where the display request of the explicit recognition result is received. Therefore, the radiographic imaging system 10 according to the present modification can assist the execution of radiographic imaging according to the imaging menu using the recognition result of the recognition unit 54, while preventing the radiation engineer or the like from excessively relying on the recognition result of the recognition unit 54. As described above, in the configuration in which the 2 nd display mode is displayed in which the content of the recognition result is displayed according to the elapse of time, when the display request of the explicit recognition result is made before the content of the recognition result is displayed (before the predetermined time elapses), the 2 nd display mode may be displayed in which the content of the recognition result is displayed according to the display request of the explicit recognition result without waiting for the elapse of time.

In the above embodiment, when a request for displaying the recognition result is input using the operation unit 46 of the radiation source 13, the content of the recognition result is displayed on the display 45 of the radiation source 13, and when a request for displaying the recognition result is input using the operation unit 53 of the console 30, the content of the recognition result is displayed on the display 52 of the console 30. Similarly, when a display request of the recognition result is input using the operation section 2 of the tablet terminal 31, the content of the recognition result is displayed on the display 61 of the tablet terminal 31. However, when a display request of the recognition result is input using any one of the operation units of the radiation source 13, the console 30, and the tablet terminal 31, the radiographic imaging system 10 can display the content of the recognition result on the corresponding display and/or other displays. For example, when a request for displaying the recognition result is input using the operation unit 46 of the console 30, the content of the recognition result can be displayed on the display 45 of the radiation source 13 and/or the display 61 of the tablet terminal 31 in addition to the display 52 of the console 30. In this case, even if the radiation engineer or the like moves to another position after inputting the display request of the recognition result in the radiation source 13, the console 30, or the tablet terminal 31, the contents of the recognition result can be confirmed quickly without re-inputting the display request of the recognition result at the moving place. For example, after the content of the recognition result is confirmed in the console 30, the content of the recognition result can be easily confirmed again in the radiation source 13. Therefore, the relocation of the object Obj and the radiography can be smoothly performed.

In the above-described embodiment, modification example, and the like, the recognition result and the like are displayed when the arrangement of the subjects Obj in the camera image does not coincide with the arrangement of the subjects Obj in the shooting menu, but even when the arrangement of the subjects Obj in the camera image coincides with the arrangement of the subjects Obj in the shooting menu, the recognition result and the like can be displayed on the display 52 of the console 30, the display 45 of the radiation source 13, and/or the display 61 of the tablet terminal 31. When the arrangement of the subjects Obj in the camera image coincides with the arrangement of the subjects Obj in the shooting menu, a message or the like indicating that the arrangement of the subjects Obj in the camera image coincides with the arrangement of the subjects Obj in the shooting menu, or an icon or the like indicating that the arrangement coincides with the arrangement of the subjects Obj in the shooting menu is displayed, a radiation engineer or the like can confirm the accuracy of the arrangement of the subjects Obj through the display. In particular, the present invention is useful when the arrangement of the object Obj is not easy, and when the object Obj is correctly arranged, the radiation engineer or the like desires to refer to the objective determination by the recognition unit 54. However, as compared with the case where some additional display such as the mark 135 is intermittently or continuously performed, when the recognition result is displayed only when the arrangement of the object Obj in the camera image does not match the arrangement of the object Obj in the shooting menu as in the above-described embodiment, the attention calling strength when the mark 135 or the like is displayed is improved. Therefore, the presence of the event to be notified can be more reliably notified by the flag 135 or the like.

In the above-described embodiment and modification, the specific arrangement of the display 45 of the radiation source 13 is arbitrary, but the display 45 of the radiation source 13 is preferably positioned in the blind area of the radiation imaging unit 14. This is because, when the display content on the display 45 of the radiation source 13 can be recognized from the object Obj placed in front of the radiographic unit 14, if a mark 135, a warning 201, or other display that draws attention appears on the display 45, the object Obj may feel uneasy and be mentally burdened. When the display 45 of the radiation source 13 is provided in the blind area of the radiographic unit 14, the display of the display 45 is difficult to see from the object Obj due to the arrangement of the object Obj, the radiation source 13, and the radiographic unit 14. Therefore, it is possible to prevent the object Obj from being felt insecure due to the display of the display 45.

The blind area of the radiation imaging unit 14 is an angular range in which the display content of the display 45 of the radiation source 13 is not visible from the radiation imaging unit 14. The display 45 is visible from the radiographic unit 14, but an angle range in which the display content is substantially not recognizable is included in the blind area of the radiographic unit 14. The tablet terminal 31 can be moved to an arbitrary position, but normally, the display content thereof is not disclosed to the object Obj. Therefore, as long as it is not disposed in a device (stand or the like) for disclosing the display contents to the object Obj, the display 61 of the tablet terminal 31 constitutes a display substantially located in the blind area of the radiographic section 14.

In the above-described embodiment and modification, the recognition result and the like are visually notified by displaying the mark 135 and the like on the display 45 and the like of the radiation source 13, but the method of notifying the radiation engineer and the like of the recognition result and the like is not limited to the visual display. For example, the radiographic imaging system 10 can notify a radiation engineer or the like of the recognition result by using voice or speech when a speaker is provided, or using vibration or vibration pattern using a motor when a motor is provided. However, when the recognition result or the like is notified by these methods, it is not preferable to provide an uncomfortable feeling to the object Obj by sound, vibration, or the like.

In the above-described embodiment and modification, in the radiographic imaging system 10, the display 52 of the console 30, the display 45 of the radiation source 13, and the display 61 of the tablet terminal 31 can display the process of the recognition processing by the recognition unit 54. The process of the recognition processing is a case where the recognition processing is performed and the recognition processing is not completed, and for example, the recognition processing is performed, the recognition processing is being performed, the recognition processing is started, and/or the recognition processing is not completed by the recognition unit 54. In this way, when the process of the recognition processing is displayed, it can be known that the recognition unit 54 is performing the recognition processing. As a result, it is possible to prevent shooting from being performed in a state in which there is a placement error of the object Obj without waiting for display of the recognition result or the like.

The radiographic imaging system 10 according to the above-described embodiment and modifications displays the recognition result of the recognition unit 54 on the display 45 of the radiation source 13 at least before the radiographic imaging is performed. This is to notify that there is a configuration error of the object Obj or the like before the radiography is performed. Further, although the timing at which the recognition unit 54 executes the recognition processing is arbitrary, it is preferable that the recognition unit 54 recognizes the operation of the object Obj, executes the recognition processing as to whether or not the arrangement of the object Obj in the camera image matches the arrangement of the object Obj in the shooting menu when the operation of the object Obj is stopped, and displays the result on the display 45 of the radiation source 13 or the like. This is because, in general, when the arrangement of the object Obj is completed and radiography is to be performed, the object Obj is instructed not to move. The "stop" of the operation of the object Obj includes, for example, a case where the operation of the object Obj is smaller than a preset reference (threshold), in addition to a case where the object Obj is still.

The above-described embodiment and modifications are methods of operating a radiographic imaging system including: a radiation source 13 that generates radiation Ra; a radiation imaging section 14 that images an object Obj using radiation Ra; a camera 20 that photographs an object Obj arranged to the radiographic imaging section 14; and a console 30 for setting an imaging menu, the operation method of the radiation imaging system includes the following steps: a recognition step in which the recognition unit 54 recognizes whether or not the arrangement of the object Obj in the camera image captured using the camera 20 matches the arrangement of the object Obj in the shooting menu; a 1 st display step of displaying, on the displays 45, 52, 61, a 1 st display mode indicating that the recognition result is present; and a 2 nd display step of, when a display request of the explicit identification result is received, displaying the identification result in the 2 nd display mode on the displays 45, 52, 61.

The above-described embodiment and modifications are programs for driving a radiographic imaging system including: a radiation source 13 that generates radiation Ra; a radiation imaging section 14 that images an object Obj using radiation Ra; a camera 20 that photographs an object Obj arranged to the radiographic imaging section 14; and a console 30 for setting a photographing menu, the program including a program for executing the steps of: a recognition step of recognizing, using the recognition unit 54, whether or not the arrangement of the object Obj in the camera image captured using the camera 20 matches the arrangement of the object Obj in the shooting menu; a 1 st display step of displaying a 1 st display mode indicating that the recognition result exists, using the displays 45, 52, 61; and a 2 nd display step of displaying the content of the recognition result in the 2 nd display mode when the display request of the explicit recognition result is received.

The radiographic imaging system 10 according to the above-described embodiment and modifications may include a configuration in which imaging conditions are automatically set. For example, as shown in fig. 14, the radiographic system 10 may be provided with a TOF Camera (Time-of-Flight Camera) 301 integrally with the radiation source 13. TOF camera 301 has, for example, a pulsed light source that emits pulsed light. Further, by photographing a range including at least an irradiation range of the radiation Ra using the pulsed light emitted from the pulsed light source, the propagation time of the pulsed light is measured using the image sensor. As a result, the TOF camera 301 measures the distance to the object Obj. In the present modification, the TOF camera 301 is provided integrally with the radiation source 13, and therefore the distance to the object Obj measured using the TOF camera 301 is substantially the distance from the radiation source 13 to the object Obj (so-called SOD (source to object distance)).

As shown in fig. 15, the console 30 is provided with a body thickness measuring unit 302 and an imaging condition setting unit 303. The body thickness measuring section 302 measures the body thickness of the object Obj (when the object Obj is an object, the thickness of the object) using the measurement result of the distance to the object Obj measured by the TOF camera 301. Specifically, since the SID (source to image distance) is specified according to the arrangement of the radiation source 13 and the radiographic unit 14, the body thickness measurement unit 302 can calculate the body thickness of the object Obj by subtracting the SOD measured by the TOF camera 301 from the SID. The imaging condition setting unit 303 automatically sets the imaging conditions using the body thickness of the object Obj measured by the body thickness measuring unit 302. The imaging conditions refer to a tube voltage and/or a tube current (a radiation dose and/or a radiation quality of the radiation Ra) of the radiation tube 41, use or non-use of the grid, an aspect ratio thereof when the grid is used, and the like.

As described above, when the radiographic imaging system 10 includes a configuration for automatically setting the imaging conditions, the setting of the imaging conditions and the like becomes simple, and therefore, the radiographic imaging can be performed more smoothly.

The TOF camera 301, the body thickness measuring unit 302, and the imaging condition setting unit 303, which are configured to automatically set imaging conditions, can also be used in a radiation imaging system that recognizes whether or not the arrangement of the object Obj in the camera image matches the arrangement of the object Obj in the imaging menu, and does not display the result. In this case, compared to a radiation imaging system not including the TOF camera 301 or the like, the radiation imaging system having a configuration in which the TOF camera 301 or the like automatically sets imaging conditions can be more easily set, and thus radiation imaging can be performed more smoothly.

When a camera image (the camera image 103 or the camera image 123 in the above-described embodiment and the like) is displayed on the display 52 of the console 30 and/or the display 61 of the tablet terminal 31, the radiographic system 10 according to the above-described embodiment and the modifications can arbitrarily change the display angle of view of the displayed camera image. The display angle of view is a display range of the camera image displayed on the display 52 of the console 30 and/or the display 61 of the tablet terminal 31 in the entire captured camera image, and is a part or all of the camera image.

As described above, when the display angle of view of the camera image is variable, the radiographic imaging system 10 preferably includes the irradiation range estimation unit 402 and the display angle of view determination unit 403, as shown in fig. 16.

The irradiation range estimation unit 402 estimates the irradiation range of the radiation Ra using the camera image. The irradiation range estimation unit 402 estimates the irradiation range of the radiation Ra by recognizing, for example, the position, size, and/or orientation of the radiation imaging unit 14 reflected in the camera image. When the radiation source 13 has a collimator that adjusts the irradiation range of the radiation Ra, the irradiation range estimation unit 402 can acquire information relating to the setting state of the collimator and estimate the irradiation range of the radiation Ra using the information. When the irradiation range display section 43 is being used to project the irradiation range of the radiation Ra, the irradiation range estimation section 402 recognizes the display based on the irradiation range of the irradiation range display section 43 in the camera image, and can estimate the irradiation range of the radiation Ra using the result thereof.

The display view angle determination unit 403 determines the display view angle of the camera image based on the irradiation range of the radiation Ra estimated by the irradiation range estimation unit 402. The display view angle determination unit 403 determines the display view angle so that a range including the irradiation range of the radiation Ra estimated by the irradiation range estimation unit 402 and at least smaller than the entire camera image is set as the display range, for example. The display view angle determination unit 403 can determine the display view angle of the camera image so that a range equal to the irradiation range of the radiation Ra estimated by the irradiation range estimation unit 402 is a display range.

When the display angle of view of the camera image is determined by the display angle of view determination section 403, the display 52 of the console 30 and the display 61 of the tablet terminal 31 optimally display the portion of the camera image corresponding to the display angle of view determined by the display angle of view determination section 403. Specifically, the display 52 of the console 30 makes the center of the irradiation range of the radiation Ra coincide with the center of the image display area 102, and enlarges and displays the portion of the camera image corresponding to the determined display angle of view. Likewise, the display 61 of the tablet terminal 31 makes the center of the irradiation range of the radiation Ra coincide with the center of the image display area 152, and enlarges and displays the portion of the camera image corresponding to the determined display angle of view. However, the portion of the camera image corresponding to the display angle of view can be displayed in a state of maintaining the original size without being enlarged.

As described above, the radiographic imaging system 10 provided with the irradiation range estimation unit 402 and the display view angle determination unit 403 operates, for example, as follows. First, before determining the display angle of view, the display 52 of the console 30 displays the entirety of the camera image (when it is set to display a part of the camera image, the entirety of the part) in the image display area 102 (refer to fig. 6 or fig. 8). On the other hand, as shown in fig. 17, after the irradiation range is estimated by the irradiation range estimation unit 402, when the display angle determination unit 403 determines the display angle 404, the display 52 of the console 30 adjusts the position and size of the portion corresponding to the determined display angle 404 and displays the portion in the image display area 102 in an optimum manner. Therefore, according to the radiation imaging system 10 including the irradiation range estimating unit 402 and the display view angle determining unit 403, the radiation engineer or the like can clearly and reliably recognize the irradiation range of the radiation Ra. As a result, the object Obj can be easily and accurately arranged in accordance with the irradiation range of the radiation Ra. The operation of the display 61 of the tablet terminal 31 is also the same as the operation of the display 52 of the console 30 described above. The display modes of the 1 st display mode and the 2 nd display mode are the same as those of the above-described embodiment (see fig. 8, 9, and the like).

In the modification, the display angle of view of the camera image is changed, but instead of changing the display angle of view of the camera image, the irradiation range of the radiation Ra may be displayed on the camera image. In this case, the display angle of view determination unit 403 in the above-described modification is omitted, or the function thereof is stopped. The display 52 of the console 30 and the display 61 of the tablet terminal 31 display camera images in the image display area 102 and the image display area 152, respectively, and display the position, size, range, and the like of the irradiation range of the radiation Ra estimated by the irradiation range estimation unit 402 in the camera images. For example, a frame line or the like indicating the estimated irradiation range of the radiation Ra is superimposed on the camera image. In this way, the irradiation range of the radiation Ra estimated by the emphasis of the frame line or the like enables the radiation engineer or the like to accurately recognize the irradiation range of the radiation Ra. As a result, the object Obj can be easily and accurately arranged in accordance with the irradiation range of the radiation Ra. In addition, the display 52 of the console 30 and the display 61 of the tablet terminal 31 can prevent the irradiation range of the radiation Ra from being lost.

In the above-described embodiment and various modifications, the display 52 of the console 30 and the display 61 of the tablet terminal 31 each automatically display a camera image, but it is preferable that the display and non-display of the camera image can be arbitrarily switched by a radiation engineer or the like. However, when the camera image is not displayed, the recognition of the object Obj by the recognition unit 54 and the display in the 1 st display mode and the 2 nd display mode are also possible. Even if the camera image is set to be not displayed, the control unit 56 can automatically display the camera image when the 1 st display mode is displayed (that is, when the mark 135 or the like is displayed). This is to make it easy to confirm the arrangement of the object Obj that may need to be arranged again without going through the display setting of the camera image even when the camera image is not displayed. When the camera image needs to be confirmed, it is preferable to display a warning indicating the confirmation to urge the display of the camera image.

In the above-described embodiment and various modifications, since the camera 20 is provided substantially integrally with the radiation source 13, when the position of the radiation source 13 (or a part such as a collimator constituting the radiation source 13) is adjusted or rotated, the direction of the camera image captured by the camera 20 is also changed. Accordingly, when displaying the camera image, the display 52 of the console 30 and the display 61 of the tablet terminal 31 preferably automatically adjust the orientation of the camera image. For example, the camera image is rotated and displayed so that the vertically upward direction is always positioned above the display 52 of the console 30 and the display 61 of the tablet terminal 31. Further, by cutting (or adjusting the display angle of view) the camera image as necessary on the display 52 of the console 30 and the display 61 of the tablet terminal 31, the overall shape of the camera image can be adjusted according to the image display area 102 and the image display area 152. This is because when the rectangular camera image is rotated in the image display area 102 and the image display area 152, the camera image is reduced, and therefore, the entire shape of the camera image is adjusted at once, so that the subject Obj or the like can be easily confirmed via the camera image.

In the above-described embodiment and various modifications, when the 1 st display mode and/or the 2 nd display mode are displayed, it is preferable to display an index (so-called reliability or reliability, hereinafter, referred to as reliability) such as a numerical value indicating the accuracy of the recognition result recognized by the recognition unit 54 together. This is because the display of reliability can be used as a determination index for determining whether or not the recognition result can be relied upon, and therefore, the reliability of the recognition result can be determined substantially intuitively by the radiation engineer or the like observing the display of reliability. In addition, the recognition unit 54 can output the reliability together with the recognition result in association with the recognition processing.

In addition, some or all of the above embodiments and modifications can be combined and used as desired.

In the above-described embodiments and the like, the hardware configuration of the processing unit (processing unit) that executes various processes, such as the imaging menu setting unit 51, the operation unit 53, the recognition unit 54, the control unit 56, the body thickness measurement unit 302, the imaging condition setting unit 303, the irradiation range estimation unit 402, and the display view angle determination unit 403, is a processor (processor) of various types as shown below. The various processors include a Programmable Logic Device (PLD) such as a CPU (central processing unit), a GPU (graphics processing unit), an FPGA (field programmable gate array), or the like, which is a general-purpose processor that executes software (programs) to function as various processing units and can change a circuit configuration after manufacture, and a dedicated electric circuit, which is a processor having a circuit configuration specifically designed to execute various types of processing.

One processing unit may be constituted by one of these various processors, or may be constituted by a combination of two or more processors of the same kind or different kinds (for example, a plurality of FPGAs, a combination of a CPU and an FPGA, a combination of a CPU and a GPU, or the like). Further, the plurality of processing units may be configured by one processor. As an example in which a plurality of processing units are configured by one processor, the 1 st embodiment is a mode in which one processor is configured by a combination of one or more CPUs and software, as typified by a computer such as a client or a server, and the processor functions as a plurality of processing units. The 2 nd System uses a processor in which the functions of the entire System including a plurality of processing units are realized by one IC (Integrated Circuit) Chip, as represented by a System On Chip (SoC) or the like. In this manner, the various processing units are configured using one or more of the various processors as a hardware configuration.

More specifically, the hardware configuration of these various processors is an electric circuit (circuit) in a system in which circuit elements such as semiconductor elements are combined.

Description of the symbols

10-radiography system, 13-radiation source, 14-radiography section, 20-camera, 30-console, 31-flat panel terminal, 41-radiation tube, 42-high voltage generation circuit, 43-irradiation range display section, 45-display, 46-operation section, 51-photography menu setting section, 52-display, 53-operation section, 54-recognition section, 56-control section, 58-RIS, 59-HIS, 61-display, 62-operation section, 101-photography menu display area, 102-image display area, 103-camera image, 111-1 st photography menu, 112-2 nd photography menu, 113-radiation image, 123-camera image, 133-recognition result display area, 135-mark, 141-shooting menu display area, 142-recognition result display area, 151-shooting menu display area, 152-image display area, 153-recognition result display area, 201-warning, 301-TOF camera, 302-body thickness measurement section, 303-shooting condition setting section, 402-irradiation range inference section, 403-display view angle determination section, 404-display view angle.