JP2020182640A - X-ray diagnostic apparatus and medical information processing device - Google Patents

Abstract

To improve the degree of freedom for setting of a photographic angle in a biplane X-ray diagnostic apparatus.SOLUTION: According to an embodiment, a medical information processing device includes a first arm, a second arm, and a determination part. The first arm holds a first X-ray generation part and a first X-ray detection part. The second arm holds a second X-ray generation part and a second X-ray detection part. The determination part executes first determination for arranging the first arm in accordance with a first photographic angle, and determining whether the second arm can be arranged in accordance with a second photographic angle, and second determination for arranging the second arm in accordance with the first photographic angle and determining whether the first arm can be arranged in accordance with the second photographic angle.SELECTED DRAWING: Figure 1

Description

Embodiments of the present invention relate to an X-ray diagnostic apparatus and a medical information processing apparatus.

Conventionally, an X-ray diagnostic apparatus for a pipe lane is known. In the inspection using the X-ray diagnostic device of the pipe lane, by arranging the two arms provided by the X-ray diagnostic device according to the two imaging angles, it is possible to simultaneously perform imaging at two imaging angles. it can.

For example, an X-ray diagnostic apparatus includes a C arm and an Ω arm. In this case, the X-ray diagnostic apparatus first sets the imaging angle for the C arm and the imaging angle for the Ω arm, respectively. Next, the X-ray diagnostic apparatus arranges the C arm according to the imaging angle for the C arm, and arranges the Ω arm according to the imaging angle for the Ω arm. Then, the X-ray diagnostic apparatus simultaneously executes imaging at two imaging angles. However, the C arm and the Ω arm each have a movable range, and there are cases where the two shooting angles desired by the operator cannot be realized.

Japanese Unexamined Patent Publication No. 2008-86836

An object to be solved by the present invention is to improve the degree of freedom in setting the imaging angle in the biplane X-ray diagnostic apparatus.

The medical information processing apparatus according to the embodiment includes a first arm, a second arm, and a determination unit. The first arm holds a first X-ray generator and a first X-ray detector. The second arm holds a second X-ray generator and a second X-ray detector. The determination unit determines whether or not the first arm can be arranged according to the first shooting angle and the second arm can be arranged according to the second shooting angle. A second determination to determine whether or not it is possible to arrange the second arm according to the first shooting angle and to arrange the first arm according to the second shooting angle. And execute.

FIG. 1 is a block diagram showing an example of the configuration of the X-ray diagnostic apparatus according to the first embodiment. FIG. 2 is a diagram for explaining the setting of the photographing angle according to the first embodiment. FIG. 3 is a flowchart for explaining a series of processes of the X-ray diagnostic apparatus according to the first embodiment. FIG. 4 is a diagram for explaining the setting of the photographing angle according to the second embodiment. FIG. 5 is a diagram showing a display example of a determination result according to the second embodiment. FIG. 6 is a flowchart for explaining a series of processes of the X-ray diagnostic apparatus according to the second embodiment. FIG. 7 is a block diagram showing an example of the configuration of the medical information processing system 1 according to the third embodiment.

Hereinafter, embodiments of the X-ray diagnostic apparatus and the medical information processing apparatus will be described in detail with reference to the drawings.

(First Embodiment)
First, the first embodiment will be described. In the first embodiment, the X-ray diagnostic apparatus 10 shown in FIG. 1 will be described as an example. FIG. 1 is a block diagram showing an example of the configuration of the X-ray diagnostic apparatus 10 according to the first embodiment. The X-ray diagnostic apparatus 10 is a biplane X-ray diagnostic apparatus including a first arm 105a and a second arm 105b.

Specifically, as shown in FIG. 1, the X-ray diagnostic apparatus 10 includes an X-ray high-voltage device 101, a first X-ray tube 102a, a second X-ray tube 102b, and a first X-ray. A squeezer 103a, a second X-ray squeezer 103b, a top plate 104, a first arm 105a, a second arm 105b, a first X-ray detector 106a, and a second X-ray detection. It includes a device 106b, a memory 107, a display 108, an input interface 109, and a processing circuit 110.

The X-ray high voltage device 101 supplies a high voltage to the first X-ray tube 102a and the second X-ray tube 102b under the control of the processing circuit 110. For example, the X-ray high voltage device 101 has an electric circuit such as a transformer and a rectifier, and is a high voltage that generates a high voltage applied to the first X-ray tube 102a and the second X-ray tube 102b. It has a generator and an X-ray control device that controls an output voltage according to the X-rays emitted by the first X-ray tube 102a and the second X-ray tube 102b. The high voltage generator may be a transformer type or an inverter type.

The first X-ray tube 102a and the second X-ray tube 102b are vacuum tubes having a cathode (filament) that generates thermoelectrons and an anode (target) that generates X-rays upon collision of thermions. .. The first X-ray tube 102a and the second X-ray tube 102b emit X-rays by irradiating thermoelectrons from the cathode toward the anode using the high voltage supplied from the X-ray high voltage device 101. Occur. The first X-ray tube 102a is an example of the first X-ray generating unit. The second X-ray tube 102b is an example of a second X-ray generating unit.

The first X-ray diaphragm 103a and the second X-ray diaphragm 103b each have a collimator that narrows the irradiation range of X-rays and a filter that adjusts X-rays.

The collimator in the first X-ray diaphragm 103a has, for example, four slidable diaphragm blades, and by sliding these diaphragm blades, the X-rays generated by the first X-ray tube 102a are narrowed down. The subject P is irradiated. Here, the diaphragm blade is a plate-shaped member made of lead or the like, and is provided near the X-ray irradiation port of the first X-ray tube 102a in order to adjust the X-ray irradiation range. Similarly, the collimator in the second X-ray diaphragm 103b narrows down the X-rays generated by the second X-ray tube 102b and irradiates the subject P by sliding the diaphragm blades.

The filters in the first X-ray filter 103a and the second X-ray filter 103b transmit X-rays depending on the material and thickness for the purpose of reducing the exposure dose to the subject P and improving the image quality of the X-ray image data. By changing the quality of X-rays, the soft-ray components that are easily absorbed by the subject P are reduced, and the high-energy components that cause a decrease in the contrast of X-ray image data are reduced. Further, the filter changes the dose and irradiation range of X-rays depending on the material, thickness, position, etc., and attenuates the X-rays so that the X-rays irradiated to the subject P have a predetermined distribution.

For example, the first X-ray squeezer 103a and the second X-ray squeezer 103b have drive mechanisms such as a motor and an actuator, and X-rays are operated by operating the drive mechanism under the control of a processing circuit 110 described later. Control the line irradiation. For example, the first X-ray diaphragm 103a and the second X-ray diaphragm 103b apply a drive voltage to the drive mechanism in response to a control signal received from the processing circuit 110 to open the aperture blades of the collimator. Is adjusted to control the irradiation range of X-rays irradiated to the subject P. Further, for example, the first X-ray diaphragm 103a and the second X-ray diaphragm 103b adjust the position of the filter by applying a drive voltage to the drive mechanism according to the control signal received from the processing circuit 110. By doing so, the distribution of the dose of X-rays irradiated to the subject P is controlled.

The top plate 104 is a bed on which the subject P is placed, and is arranged on a sleeper drive device (not shown). The subject P is not included in the X-ray diagnostic apparatus 10. For example, the sleeper drive device has a drive mechanism such as a motor and an actuator, and controls the movement / tilt of the top plate 104 by operating the drive mechanism under the control of the processing circuit 110 described later. For example, the sleeper drive device moves or tilts the top plate 104 by applying a drive voltage to the drive mechanism in response to a control signal received from the processing circuit 110.

The first X-ray detector 106a and the second X-ray detector 106b are, for example, X-ray plane detectors (FPDs) having detection elements arranged in a matrix. The first X-ray detector 106a detects X-rays irradiated from the first X-ray tube 102a and transmitted through the subject P, and outputs a detection signal corresponding to the detected X-ray dose to the processing circuit 110. To do.
Similarly, the second X-ray detector 106b detects the X-rays irradiated from the second X-ray tube 102b and transmitted through the subject P, and processes the detection signal corresponding to the detected X-ray dose in the processing circuit 110. Output to. The first X-ray detector 106a and the second X-ray detector 106b may be indirect conversion type detectors having a grid, a scintillator array, and an optical sensor array, and may be an indirect conversion type detector, and the incident X-rays may be electrocuted. It may be a direct conversion type detector having a semiconductor element that converts it into a signal.

The first arm 105a holds the first X-ray tube 102a and the first X-ray detector 106a. Specifically, the first arm 105a holds the first X-ray tube 102a and the first X-ray detector 106a so as to face each other with the subject P in between. The first arm 105a is also called a C arm or a C type arm. The first arm 105a is an example of the first arm.

For example, the first arm 105a has a drive mechanism such as a motor and an actuator, and rotates or moves by operating the drive mechanism under the control of a processing circuit 110 described later. For example, the first arm 105a attaches a drive voltage to the drive mechanism in response to a control signal received from the processing circuit 110, thereby attaching the first X-ray tube 102a and the first X-ray detector 106a to the subject. The shooting position and shooting angle are controlled by rotating and moving with respect to P.

In the following, among the configurations of the X-ray diagnostic apparatus 1, the configuration held by the first arm 105a and the first arm 105a will be referred to as the first imaging system. The first radiography system includes, for example, a first arm 105a, a first X-ray tube 102a, a first X-ray diaphragm 103a, and a first X-ray detector 106a. The shooting position and shooting angle in the first shooting system are controlled by the arrangement of the first arm 105a.

The second arm 105b holds the second X-ray tube 102b and the second X-ray detector 106b. Specifically, the second arm 105b holds the second X-ray tube 102b and the second X-ray detector 106b so as to face each other with the subject P in between. The second arm 105b is also called an Ω arm or an Ω type arm. The second arm 105b is an example of the second arm.

For example, the second arm 105b has a drive mechanism such as a motor and an actuator, and rotates or moves by operating the drive mechanism under the control of a processing circuit 110 described later. For example, the second arm 105b attaches a drive voltage to the drive mechanism in response to a control signal received from the processing circuit 110, thereby attaching the second X-ray tube 102b and the second X-ray detector 106b to the subject. The shooting position and shooting angle are controlled by rotating and moving with respect to P.

In the following, among the configurations of the X-ray diagnostic apparatus 1, the configuration held by the second arm 105b and the second arm 105b will be referred to as a second imaging system. The second radiography system includes, for example, a second arm 105b, a second X-ray tube 102b, a second X-ray diaphragm 103b, and a second X-ray detector 106b. The shooting position and shooting angle in the second shooting system are controlled by the arrangement of the second arm 105b.

The memory 107 is realized by, for example, a RAM (Random Access Memory), a semiconductor memory element such as a flash memory, a hard disk, an optical disk, or the like. For example, the memory 107 receives and stores various X-ray image data collected by the processing circuit 110. Further, the memory 107 stores programs corresponding to various functions read and executed by the processing circuit 110. The memory 107 may be realized by a server group (cloud) connected to the X-ray diagnostic apparatus 10 via a network.

The display 108 displays various information. For example, the display 108 displays a GUI (Graphical User Interface) for receiving an operator's instruction and various X-ray images under the control of the processing circuit 110. For example, the display 108 is a liquid crystal display or a CRT (Cathode Ray Tube) display. The display 108 may be a desktop type, or may be composed of a tablet terminal or the like capable of wireless communication with the processing circuit 110.

The input interface 109 receives various input operations from the operator, converts the received input operations into electric signals, and outputs the received input operations to the processing circuit 110. For example, the input interface 109 includes a mouse, a keyboard, a trackball, a switch, a button, a joystick, a touch pad for performing input operations by touching an operation surface, a touch screen in which a display screen and a touch pad are integrated, and an optical sensor. It is realized by the non-contact input circuit, voice input circuit, etc. used. The input interface 109 may be composed of a tablet terminal or the like capable of wireless communication with the processing circuit 110. Further, the input interface 109 is not limited to one provided with physical operating parts such as a mouse and a keyboard. For example, an electric signal processing circuit that receives an electric signal corresponding to an input operation from an external input device provided separately from the X-ray diagnostic apparatus 10 and outputs the electric signal to the processing circuit 110 is also an input interface 109. Included in the example.

The processing circuit 110 controls the operation of the entire X-ray diagnostic apparatus 10 by executing the control function 110a, the reception function 110b, the determination function 110c, and the display control function 110d. The reception function 110b is an example of the reception unit. The determination function 110c is an example of a determination unit. The display control function 110d is an example of a display control unit.

For example, the processing circuit 110 reads the program corresponding to the control function 110a from the memory 107 and executes it to control the operation of the sleeper drive device, thereby moving or tilting the top plate 104. Further, the control function 110a controls the X-ray high voltage device 101, the first radiography system, and the second radiography system, and collects X-ray image data from the subject P placed on the top plate 104. Here, the control function 110a controls the first photographing system and the second photographing system, respectively, and collects X-ray image data for each photographing system.

For example, the control function 110a controls the X-ray high voltage device 101 and adjusts the voltage supplied to the first X-ray tube 102a so that the subject P is irradiated from the first X-ray tube 102a. Control X-ray dose and on / off. Further, the control function 110a controls the operation of the first X-ray diaphragm 103a and adjusts the opening degree of the diaphragm blades of the collimator to adjust the irradiation range of the X-rays irradiated to the subject P. Control. Further, the control function 110a controls the operation of the first X-ray diaphragm 103a and adjusts the position of the filter to control the distribution of the X-ray dose. Further, the control function 110a controls the arrangement of the first arm 105a by controlling the operation of the first arm 105a. That is, the control function 110a controls the shooting position and shooting angle in the first shooting system by controlling the operation of the first arm 105a. Further, the control function 110a generates X-ray image data based on the detection signal received from the first X-ray detector 106a, and stores the generated X-ray image data in the memory 107.

Further, the control function 110a controls the X-ray high voltage device 101 and adjusts the voltage supplied to the second X-ray tube 102b so that the subject P is irradiated from the second X-ray tube 102b. Control X-ray dose and on / off. Further, the control function 110a controls the operation of the second X-ray diaphragm 103b and adjusts the opening degree of the diaphragm blades of the collimator to adjust the irradiation range of the X-rays irradiated to the subject P. Control. Further, the control function 110a controls the operation of the second X-ray diaphragm 103b and adjusts the position of the filter to control the distribution of the X-ray dose. Further, the control function 110a controls the arrangement of the second arm 105b by controlling the operation of the second arm 105b. That is, the control function 110a controls the shooting position and shooting angle in the second shooting system by controlling the operation of the second arm 105b. Further, the control function 110a generates X-ray image data based on the detection signal received from the second X-ray detector 106b, and stores the generated X-ray image data in the memory 107.

The control function 110a may perform various image processing on the X-ray image data stored in the memory 107. For example, the control function 110a uses an image processing filter for each of the X-ray image data collected by using the first imaging system and the X-ray image data collected by using the second imaging system. Performs noise reduction processing and scattered ray correction.

Further, the processing circuit 110 receives various input operations from the operator via the input interface 109 by reading a program corresponding to the reception function 110b from the memory 107 and executing the program. For example, the reception function 110b receives input operations of various shooting conditions such as X-ray conditions (tube current value, tube voltage value, etc.), shooting position, first shooting angle, second shooting angle, etc. from the operator. .. The first shooting angle and the second shooting angle will be described later.

Further, the processing circuit 110 reads a program corresponding to the determination function 110c from the memory 107 and executes it to arrange the first arm 105a according to the first shooting angle and according to the second shooting angle. The first determination to determine whether or not the second arm 105b can be arranged, the second arm 105b to be arranged according to the first shooting angle, and the first according to the second shooting angle. A second determination for determining whether or not the arm 105a of the above can be arranged is executed. Further, the processing circuit 110 reads a program corresponding to the display control function 110d from the memory 107 and executes it to display a GUI or an X-ray image on the display 108. Further, the display control function 110d displays the results of the first determination and the second determination by the determination function 110c. The first determination and the second determination will be described later.

In the X-ray diagnostic apparatus 10 shown in FIG. 1, each processing function is stored in the memory 107 in the form of a program that can be executed by a computer. The processing circuit 110 is a processor that realizes a function corresponding to each program by reading a program from the memory 107 and executing the program. In other words, the processing circuit 110 in the state where each program is read has a function corresponding to the read program. Note that FIG. 1 shows a case where each processing function of the control function 110a, the reception function 110b, the determination function 110c, and the display control function 110d is realized by a single processing circuit 110, but the embodiment is limited to this. It is not something that can be done. For example, the processing circuit 110 may be configured by combining a plurality of independent processors, and each processor may execute each program to realize each processing function. Further, each processing function of the processing circuit 110 may be appropriately distributed or integrated into a single or a plurality of processing circuits.

The X-ray diagnostic apparatus 10 has been described above. Under such a configuration, the X-ray diagnostic apparatus 10 improves the degree of freedom in setting the imaging angle by processing by the processing circuit 110. Hereinafter, the processing performed by the processing circuit 110 will be described in detail.

In the inspection using the X-ray diagnostic apparatus 10, various imaging conditions including the imaging angle are first set. For example, the reception function 110b receives an input operation of the X-ray condition and the shooting position from the operator via the input interface 109. Next, the control function 110a sets the X-ray condition and the shooting position received by the reception function 110b as shooting conditions.

As the shooting position, one position common to the first shooting system and the second shooting system is set. In the following, as an example, a case where the position of the aneurysm formed in the blood vessel of the subject P is set as the imaging position will be described. Further, as the X-ray condition, one condition common to the first shooting system and the second shooting system may be set, and the condition is set for each of the first shooting system and the second shooting system. It may be set. Hereinafter, the X-ray conditions of the first photographing system and the X-ray conditions of the second photographing system will be described as being the same.

Next, the reception function 110b accepts an input operation of a shooting angle as a shooting condition. For example, the reception function 110b receives an input operation of the imaging angle from the operator who has referred to the three-dimensional medical image data of the imaging position in the subject P.

For example, the control function 110a collects three-dimensional X-ray image data as three-dimensional medical image data by rotation imaging using the first imaging system or the second imaging system. As an example, the control function 110a first moves the second arm 105b so that the first photographing system and the second photographing system can be used when performing rotation photography using the first photographing system. The second photographing system is retracted to a position where contact (interference) does not occur. Next, the control function 110a rotates the first arm 105a to rotate the first X-ray tube 102a and the first X-ray detector 106a around the subject P, and causes a predetermined frame. X-rays are emitted from the first X-ray tube 102a at a rate. Here, the first X-ray detector 106a outputs a detection signal corresponding to the detected X-ray dose, and the control function 110a projects a plurality of projections based on the detection signal received from the first X-ray detector 106a. Generate data. That is, the control function 110a collects a plurality of projection data at a predetermined frame rate by executing rotary photography. Then, the control function 110a reconstructs the three-dimensional X-ray image data from the collected plurality of projection data.

Here, the control function 110a may collect three-dimensional X-ray image data indicating the blood vessel shape of the subject P as the three-dimensional medical image data. As an example, the control function 110a first executes rotational imaging of the subject P in a state where the contrast medium is not injected into the blood vessel, and a plurality of projection data (hereinafter, also referred to as a mask image) at a predetermined frame rate. List). Next, the control function 110a executes rotational imaging of the subject P in a state where the contrast medium is injected into the blood vessel, and collects a plurality of projection data (hereinafter, also referred to as contrast images) at a predetermined frame rate. To do. Then, the control function 110a reconstructs the three-dimensional X-ray image data showing the blood vessel shape of the subject P from the difference image data obtained by differentiating the mask image and the contrast image. To give another example, the control function 110a reconstructs the three-dimensional X-ray image data from the mask image and reconstructs the three-dimensional X-ray image data from the contrast image. Then, the control function 110a generates three-dimensional X-ray image data showing the blood vessel shape of the subject P by differentiating the two reconstructed three-dimensional X-ray image data.

Next, the display control function 110d rotatably displays the three-dimensional X-ray image data collected by the control function 110a on the display 108. For example, the display control function 110d rotatably displays the three-dimensional X-ray image data I1 showing the blood vessel shape of the subject P in the regions R11 and R12 shown in FIG. Note that FIG. 2 is a diagram for explaining the setting of the photographing angle according to the first embodiment.

That is, the display control function 110d displays the three-dimensional X-ray image data I1 in two places, the area R11 and the area R12. Here, the three-dimensional X-ray image data I1 displayed in the area R11 and the three-dimensional X-ray image data I1 displayed in the area R12 are independently and rotatably displayed. For example, when the operator performs an input operation (drag operation, swipe operation, etc.) on the area R11, the display control function 110d responds to the input operation received from the operator and performs a three-dimensional X-ray image in the area R11. The display angle of the data I1 is changed. Similarly, when the operator performs an input operation on the area R12, the display control function 110d changes the display angle of the three-dimensional X-ray image data I1 in the area R12.

Further, the area R13 indicates the display angle of the three-dimensional X-ray image data I1 in the area R11. In the case shown in FIG. 2, the display angle of the three-dimensional X-ray image data I1 in the region R11 is "RAO (right anterior oblique): 10 °, CAU (tail direction: caudal): 3 °". For example, the operator refers to the three-dimensional X-ray image data I1 displayed in the area R11, and determines whether or not the display angle “RAO: 10 °, CAU: 3 °” is appropriate.

Here, in the three-dimensional X-ray image data I1 displayed in the region R11, it was determined that the display angle "RAO: 10 °, CAU: 3 °" is not appropriate, such as when another blood vessel overlaps the aneurysm. In this case, the operator performs an input operation for rotating the three-dimensional X-ray image data I1 displayed in the area R11.

On the other hand, when it is determined that the display angle "RAO: 10 °, CAU: 3 °" is appropriate, the operator selects the display angle "RAO: 10 °, CAU: 3 °". For example, the operator selects the display angle "RAO: 10 °, CAU: 3 °" by performing a click operation, a tap operation, or the like in the area R13 via the input interface 109. Then, the reception function 110b accepts the selected display angle "RAO: 10 °, CAU: 3 °" as the shooting angle. The shooting angle "RAO: 10 °, CAU: 3 °" is an example of the first shooting angle. That is, the reception function 110b accepts the operation of selecting the display angle of the three-dimensional X-ray image data I1 in the area R11 as the input operation of the first shooting angle.

Further, the area R14 indicates the display angle of the three-dimensional X-ray image data I1 in the area R12. In the case shown in FIG. 2, the display angle of the three-dimensional X-ray image data I1 in the region R12 is "LAO (left anterior oblique): 3 °, CRA (head direction: cranial): 10 °". For example, the operator refers to the three-dimensional X-ray image data I1 displayed in the area R12, and determines whether or not the display angle “LAO: 3 °, CRA: 10 °” is appropriate.

Here, it was determined that the display angle "LAO: 3 °, CRA: 10 °" is not appropriate, such as when another blood vessel overlaps the aneurysm in the three-dimensional X-ray image data I1 displayed in the region R12. In this case, the operator performs an input operation for rotating the three-dimensional X-ray image data I1 displayed in the area R12.

On the other hand, when it is determined that the display angle "LAO: 3 °, CRA: 10 °" is appropriate, the operator selects the display angle "LAO: 3 °, CRA: 10 °". Then, the reception function 110b accepts the selected display angle "LAO: 3 °, CRA: 10 °" as the shooting angle. The shooting angle "LAO: 3 °, CRA: 10 °" is an example of the second shooting angle. That is, the reception function 110b accepts the operation of selecting the display angle of the three-dimensional X-ray image data I1 in the area R12 as the input operation of the second shooting angle.

Next, the determination function 110c determines whether or not it is possible to arrange the first arm 105a according to the first photographing angle and arrange the second arm 105b according to the second photographing angle. The first determination and the second determination as to whether or not it is possible to arrange the second arm 105b according to the first photographing angle and arrange the first arm 105a according to the second photographing angle. Judgment and execution.

For example, the determination function 110c determines whether or not the first shooting angle "RAO: 10 °, CAU: 3 °" accepted by the reception function 110b is included in the movable range of the first arm 105a. As an example, in the determination function 110c, the straight line connecting the X-ray focal point in the first X-ray tube 102a and the center position of the detection surface in the first X-ray detector 106a is the first imaging angle “RAO: 10”. °, CAU: 3 ° ”is determined whether or not the first arm 105a can be rotated.

Further, the determination function 110c determines whether or not the second shooting angle "LAO: 3 °, CRA: 10 °" received by the reception function 110b is included in the movable range of the second arm 105b. Here, the first shooting angle "RAO: 10 °, CAU: 3 °" is included in the movable range of the first arm 105a, and the second shooting angle "LAO: 3 °, CRA: 10" When "°" is included in the movable range of the second arm 105b, the determination function 110c determines that it is "possible" in the first determination.

On the other hand, the first shooting angle "RAO: 10 °, CAU: 3 °" is not included in the movable range of the first arm 105a, and the second shooting angle "LAO: 3 °, CRA: When "10 °" is not included in the movable range of the second arm 105b, the determination function 110c determines that it is "not possible" in the first determination. Further, the first shooting angle "RAO: 10 °, CAU: 3 °" is not included in the movable range of the first arm 105a, and the second shooting angle "LAO: 3 °, CRA: 10" When "°" is included in the movable range of the second arm 105b, the determination function 110c determines that it is "not possible" in the first determination. Further, the first shooting angle "RAO: 10 °, CAU: 3 °" is included in the movable range of the first arm 105a, and the second shooting angle "LAO: 3 °, CRA: 10 °". Is not included in the movable range of the second arm 105b, the determination function 110c determines that it is “not possible” in the first determination. That is, when the first shooting angle "RAO: 10 °, CAU: 3 °" is not included in the movable range of the first arm 105a, or when the second shooting angle "LAO: 3 °, CRA: 10" If "°" is not included in the movable range of the second arm 105b, the determination function 110c determines that it is "not possible" in the first determination.

Similarly, the determination function 110c makes a second determination. Specifically, the determination function 110c determines whether or not the first shooting angle "RAO: 10 °, CAU: 3 °" received by the reception function 110b is included in the movable range of the second arm 105b. To do. Further, the determination function 110c determines whether or not the second shooting angle "LAO: 3 °, CRA: 10 °" accepted by the reception function 110b is included in the movable range of the first arm 105a. Here, the first shooting angle "RAO: 10 °, CAU: 3 °" is included in the movable range of the second arm 105b, and the second shooting angle "LAO: 3 °, CRA: 10" When "°" is included in the movable range of the first arm 105a, the determination function 110c determines that it is "possible" in the second determination. On the other hand, when the first shooting angle "RAO: 10 °, CAU: 3 °" is not included in the movable range of the second arm 105b, or when the second shooting angle "LAO: 3 °, CRA:" When "10 °" is not included in the movable range of the first arm 105a, the determination function 110c determines that it is "not possible" in the second determination. The order in which the first determination and the second determination are performed is arbitrary, and may be performed in parallel.

Next, the display control function 110d displays the results of the first determination and the second determination. For example, the display control function 110d is determined to be "possible" in both the first determination and the second determination, and in either the first determination or the second determination. The case where the case is determined to be "not possible" in both the first determination and the second determination is displayed in an identifiable manner.

For example, the display control function 110d is determined to be "possible" in both the first determination and the second determination, and "possible" in either the first determination or the second determination. The character color of the area R13 and the area R14 in FIG. 2 is changed depending on whether the case is "not possible" in both the first determination and the second determination. As an example, the display control function 110d sets the character color to "white" when it is determined to be "possible" in both the first determination and the second determination. Further, the display control function 110d sets the character color to "green" when it is determined to be "possible" in either the first determination or the second determination. Further, the display control function 110d sets the character color to "red" when it is determined that "it is not possible" in both the first determination and the second determination.

Further, the display control function 110d is determined to be "possible" in the first determination and in the second determination among the cases where it is determined to be "possible" in either the first determination or the second determination. The case where it is determined to be "not possible" and the case where it is determined to be "not possible" in the first determination and "possible" in the second determination may be displayed in an identifiable manner.
As an example, the display control function 110d determines that it is "possible" in the first determination and "impossible" in the second determination, and that it is "impossible" in the first determination. And, the character color of the area R13 and the area R14 of FIG. 2 is changed depending on the case where it is determined as "possible" in the second determination.

Next, the control function 110a determines the allocation of the first arm 105a and the second arm 105b to the first shooting angle and the second shooting angle. Specifically, the control function 110a arranges the first arm 105a according to the first photographing angle and arranges the second arm 105b according to the second photographing angle, or the first arm 105b is arranged. It is determined whether to arrange the second arm 105b according to the shooting angle and to arrange the first arm 105a according to the second shooting angle. In other words, the control function 110a assigns the first arm 105a and the second arm 105b to the first shooting angle and the second shooting angle, respectively, or the first shooting angle and the second shooting. It is determined whether to allocate the second arm 105b and the first arm 105a to the angle, respectively.

For example, when the determination function 110c determines "possible" in the first determination and "not possible" in the second determination, the control function 110a sets the first imaging angle and the second imaging angle. On the other hand, the first arm 105a and the second arm 105b are assigned respectively. Further, when the determination function 110c determines that "not possible" in the first determination and "possible" in the second determination, the control function 110a sets the first imaging angle and the second imaging angle. On the other hand, the second arm 105b and the first arm 105a are assigned respectively.

Further, when it is determined as "possible" in both the first determination and the second determination, the control function 110a assigns a predetermined arm to the first imaging angle and the second imaging angle, respectively. For example, the control function 110a "if it is determined to be" possible "in both the first determination and the second determination, the first arm 105a and the first arm 105a with respect to the first imaging angle and the second imaging angle. A rule such as "assign each of the second arms 105b" is set in advance and stored in the memory 107. Then, when it is determined as "possible" in both the first determination and the second determination, the control function 110a refers to the first shooting angle and the second shooting angle according to the rule stored in the memory 107. The first arm 105a and the second arm 105b are assigned respectively.

Alternatively, the control function 110a may determine the allocation of the first arm 105a and the second arm 105b to the first shooting angle and the second shooting angle by accepting the input operation from the operator. For example, the operator refers to the character colors of the area R13 and the area R14, and refers to the first arm 105a and the second arm 105b with respect to the first shooting angle and the second shooting angle via the input interface 109. Perform an assignment input operation. Further, the reception function 110b accepts an assignment input operation by the operator. Then, the control function 110a determines the allocation of the first arm 105a and the second arm 105b to the first shooting angle and the second shooting angle based on the allocation received by the reception function 110b.

Further, when it is determined that "it is not possible" in both the first determination and the second determination, the reception function 110b again accepts the input operation of the first shooting angle and the second shooting angle. In addition, even when it is determined as "possible" in both the first determination and the second determination, and when it is determined as "possible" in either the first determination or the second determination. The reception function 110b can re-accept the input operation of the first shooting angle and the second shooting angle. For example, when the operator accepts an input operation to reset the shooting angle, the reception function 110b again accepts the input operation of the first shooting angle and the second shooting angle.

Next, the control function 110a arranges the first arm 105a and the second arm 105b according to the determined allocation. For example, when the first arm 105a and the second arm 105b are assigned to the first shooting angle and the second shooting angle, respectively, the control function 110a uses the first arm according to the first shooting angle. Place 105a. As an example, in the control function 110a, the straight line connecting the X-ray focus in the first X-ray tube 102a and the center position of the detection surface in the first X-ray detector 106a coincides with the first imaging angle. The first arm 105a is rotated. Similarly, the control function 110a arranges the second arm 105b according to the second shooting angle.

Next, the control function 110a generates X-rays from the first X-ray tube 102a and the second X-ray tube 102b, and executes shooting at the first shooting angle and the second shooting angle. For example, the control function 110a controls the first shooting system to perform shooting at the first shooting angle. Specifically, the control function 110a irradiates the subject P and the first X-ray detector 106a with X-rays by generating X-rays from the first X-ray tube 102a. Then, the control function 110a generates X-ray image data (hereinafter, also referred to as first X-ray image data) of the first imaging angle based on the detection signal received from the first X-ray detector 106a. To do.

Further, the control function 110a controls the second shooting system to execute shooting at the second shooting angle. Specifically, the control function 110a irradiates the subject P and the second X-ray detector 106b with X-rays by generating X-rays from the second X-ray tube 102b. Then, the control function 110a generates X-ray image data of the second photographing angle (hereinafter, also referred to as the second X-ray image data) based on the detection signal received from the second X-ray detector 106b. To do.

Next, the display control function 110d causes the display 108 to display the first X-ray image data and the second X-ray image data. For example, the control function 110a collects a plurality of first X-ray image data and a plurality of second X-ray image data, respectively, and the display control function 110d collects the collected first X-ray image data and the second X-ray. Image data is displayed in sequence. The X-ray image data that is sequentially displayed in parallel with the collection is also described as a fluoroscopic image. That is, the display control function 110d causes the display 108 to display the perspective image of the first shooting angle and the perspective image of the second shooting angle. The display control function 110d may display the perspective image of the first shooting angle and the perspective image of the second shooting angle on one display 108, or may be displayed on a plurality of displays 108, respectively. Good.

Then, the operator can perform various procedures while referring to the perspective image of the first shooting angle and the perspective image of the second shooting angle. For example, the operator can perform coiling treatment or a stent for an aneurysm while grasping the three-dimensional structure of the blood vessel of the subject P based on the fluoroscopic image of the first imaging angle and the fluoroscopic image of the second imaging angle. Various procedures such as indwelling can be performed.

Next, an example of the processing procedure by the X-ray diagnostic apparatus 10 will be described with reference to FIG. FIG. 3 is a flowchart for explaining a series of processes of the X-ray diagnostic apparatus 10 according to the first embodiment. Step S101, step S107, step S108, and step S109 are steps corresponding to the control function 110a. Step S103 and step S106 are steps corresponding to the reception function 110b. Step S104 is a step corresponding to the determination function 110c. Step S102, step S105, and step S110 are steps corresponding to the display control function 110d.

First, the processing circuit 110 executes rotational imaging of the subject P and collects three-dimensional X-ray image data I1 (step S101). Next, the processing circuit 110 rotatably displays the three-dimensional X-ray image data I1 on the display 108 (step S102). Next, the processing circuit 110 receives an input operation of the first shooting angle and the second shooting angle (step S103). For example, the processing circuit 110 accepts an operation of selecting a display angle of the three-dimensional X-ray image data I1 as an input operation of a first shooting angle and a second shooting angle.

Next, the processing circuit 110 executes the first determination and the second determination (step S104). That is, the processing circuit 110 determines whether or not it is possible to arrange the first arm 105a according to the first photographing angle and arrange the second arm 105b according to the second photographing angle. It is determined whether or not it is possible to arrange the second arm 105b according to the first photographing angle and arrange the first arm 105a according to the second photographing angle. Next, the processing circuit 110 displays the results of the first determination and the second determination on the display 108 (step S105).

Here, the processing circuit 110 determines whether or not to change the shooting angle (step S106). For example, when it is determined that "it is not possible" in both the first determination and the second determination, or when an input operation for resetting the shooting angle is received from the operator, the processing circuit 110 takes a picture. It is determined that the angle is changed (affirmation in step S106), and the process proceeds to step S102 again. On the other hand, when it is determined that the shooting angle is not changed (step S106 is denied), the processing circuit 110 determines the allocation of the first arm 105a and the second arm 105b to the first shooting angle and the second shooting angle. (Step S107).

Next, the processing circuit 110 arranges the first arm 105a and the second arm 105b according to the determined allocation (step S108). Next, the processing circuit 110 executes imaging at the first imaging angle and the second imaging angle, and collects the first X-ray image data and the second X-ray image data (step S109). Then, the processing circuit 110 displays the collected first X-ray image data and the second X-ray image data on the display 108 (step S110), and ends the processing. In addition, step S109 and step S110 may be performed in parallel. That is, in step S109 and step S110, the processing circuit 110 may display the perspective image of the first photographing angle and the perspective image of the second photographing angle on the display 108.

As described above, according to the first embodiment, the first arm 105a holds the first X-ray tube 102a and the first X-ray detector 106a. Further, the second arm 105b holds the second X-ray tube 102b and the second X-ray detector 106b. Further, the determination function 110c determines whether or not it is possible to arrange the first arm 105a according to the first photographing angle and arrange the second arm 105b according to the second photographing angle. A second determination of 1 and a second determination as to whether or not it is possible to arrange the second arm 105b according to the first photographing angle and arrange the first arm 105a according to the second photographing angle. Execute judgment and. Therefore, the X-ray diagnostic apparatus 10 according to the first embodiment can improve the degree of freedom in setting the imaging angle in the biplane X-ray diagnostic apparatus 10.

Specifically, conventionally, when the C arm cannot be arranged according to the shooting angle for the C arm, or when the Ω arm cannot be arranged according to the shooting angle for the Ω arm, the case is determined. The shooting angle is treated as unusable. On the other hand, the X-ray diagnostic apparatus 10 can arrange the C arm according to whether or not the Ω arm can be arranged according to the imaging angle for the C arm, and can be arranged according to the imaging angle for the Ω arm. It is possible to flexibly determine whether or not the shooting angle is desired by the operator in consideration of whether or not the shooting angle is set, and to improve the degree of freedom in setting the shooting angle.

(Second Embodiment)
In the first embodiment described above, it has been described that the second determination is executed regardless of the result of the first determination. On the other hand, in the second embodiment, a case where the second determination is executed when it is determined as "not possible" in the first determination will be described.

The X-ray diagnostic apparatus 10 according to the second embodiment has the same configuration as the X-ray diagnostic apparatus 10 shown in FIG. 1, and a part of the processing by the determination function 110c and the display control function 110d is different. The points having the same configuration as that described in the first embodiment are designated by the same reference numerals as those in FIG. 1, and the description thereof will be omitted.

For example, the reception function 110b receives an input operation of the X-ray condition and the shooting position from the operator, and the control function 110a sets the X-ray condition and the shooting position received by the reception function 110b as the shooting condition. Next, the reception function 110b receives an input operation of the shooting angle for the first arm 105a and the shooting angle for the second arm 105b.

For example, first, the control function 110a collects three-dimensional X-ray image data I1 indicating the blood vessel shape of the subject P by rotational imaging using the first imaging system or the second imaging system. Next, the display control function 110d rotatably displays the three-dimensional X-ray image data I1 collected by the control function 110a on the display 108. For example, the display control function 110d rotatably displays the three-dimensional X-ray image data I1 in the regions R21 and R22 shown in FIG. Note that FIG. 4 is a diagram for explaining the setting of the photographing angle according to the second embodiment.

For example, when the operator performs an input operation (drag operation, swipe operation, etc.) on the area R21, the display control function 110d responds to the input operation received from the operator by the three-dimensional X-ray image in the area R21. The display angle of the data I1 is changed. Similarly, when the operator performs an input operation on the area R22, the display control function 110d changes the display angle of the three-dimensional X-ray image data I1 in the area R22.

Further, the display control function 110d is a position of each configuration of the X-ray diagnostic apparatus 1 when the first arm 105a is arranged in the area R23 with the display angle of the three-dimensional X-ray image data I1 in the area R21 as the imaging angle. The relationship is illustrated. For example, the display control function 110d illustrates the positional relationship of each configuration in the region R23 by using a simple model showing the shape of each configuration of the X-ray diagnostic apparatus 1. In the case shown in FIG. 4, the display control function 110d has the first X-ray tube 102a, the first X-ray filter 103a, the top plate 104, and the first X-ray diagnostic apparatus 1 in the region R23. Only the arm 105a of 1 and the first X-ray detector 106a are shown. Here, the display control function 110d changes the figure shown in the area R23 in conjunction with the change in the display angle of the three-dimensional X-ray image data I1 in the area R21.

Further, the display control function 110d indicates the display angle of the three-dimensional X-ray image data I1 in the area R21 in the area R25. In the case shown in FIG. 4, the display angle of the three-dimensional X-ray image data I1 in the region R21 is “RAO: 10 °, CAU: 3 °”. For example, the operator refers to the three-dimensional X-ray image data I1 displayed in the area R21 and the figure displayed in the area R23, and sets the display angle “RAO: 10 °, CAU: 3 °”. Determine if it is appropriate.

For example, when another blood vessel overlaps the aneurysm in the three-dimensional X-ray image data I1 displayed in the area R21, or the arrangement of the first arm 105a displayed in the area R23 may be an obstacle to the procedure. In this case, the operator determines that the display angle "RAO: 10 °, CAU: 3 °" is not appropriate. In this case, the operator performs an input operation for rotating the three-dimensional X-ray image data I1 displayed in the area R21.

On the other hand, when it is determined that the display angle "RAO: 10 °, CAU: 3 °" is appropriate, the operator selects the display angle "RAO: 10 °, CAU: 3 °". Then, the reception function 110b accepts the selected display angle "RAO: 10 °, CAU: 3 °" as the shooting angle for the first arm 105a. In other words, the reception function 110b accepts the selected display angle "RAO: 10 °, CAU: 3 °" as the shooting angle for the C arm. The shooting angle "RAO: 10 °, CAU: 3 °" is an example of the first shooting angle. That is, the reception function 110b accepts the operation of selecting the display angle of the three-dimensional X-ray image data I1 in the area R21 as the input operation of the first shooting angle.

Further, the display control function 110d is the position of each configuration of the X-ray diagnostic apparatus 1 when the second arm 105b is arranged in the area R24 with the display angle of the three-dimensional X-ray image data I1 in the area R22 as the photographing angle. The relationship is illustrated. In the case shown in FIG. 4, the display control function 110d has the second X-ray tube 102b, the second X-ray filter 103b, the top plate 104, and the second X-ray diagnostic apparatus 1 in the region R24. Only the second arm 105b and the second X-ray detector 106b are shown. Here, the display control function 110d changes the figure shown in the area R24 in conjunction with the change in the display angle of the three-dimensional X-ray image data I1 in the area R22.

Further, the display control function 110d indicates the display angle of the three-dimensional X-ray image data I1 in the area R22 in the area R26. In the case shown in FIG. 4, the display angle of the three-dimensional X-ray image data I1 in the region R22 is “LAO: 3 °, CRA: 10 °”. For example, the operator refers to the three-dimensional X-ray image data I1 displayed in the area R22 and the figure displayed in the area R24, and sets the display angle “LAO: 3 °, CRA: 10 °”. Determine if it is appropriate.

For example, in the three-dimensional X-ray image data I1 displayed in the area R22, when another blood vessel overlaps the aneurysm, or the arrangement of the second arm 105b displayed in the area R24 may be an obstacle to the procedure. In this case, the operator determines that the display angle "LAO: 3 °, CRA: 10 °" is not appropriate. In this case, the operator performs an input operation for rotating the three-dimensional X-ray image data I1 displayed in the area R22.

On the other hand, when it is determined that the display angle "LAO: 3 °, CRA: 10 °" is appropriate, the operator selects the display angle "LAO: 3 °, CRA: 10 °". Then, the reception function 110b accepts the selected display angle "LAO: 3 °, CRA: 10 °" as the shooting angle for the second arm 105b. In other words, the reception function 110b accepts the selected display angle "LAO: 3 °, CRA: 10 °" as the shooting angle for the Ω arm. The shooting angle "LAO: 3 °, CRA: 10 °" is an example of the second shooting angle. That is, the reception function 110b accepts the operation of selecting the display angle of the three-dimensional X-ray image data I1 in the area R22 as the input operation of the second shooting angle.

Next, the determination function 110c determines whether or not it is possible to arrange the first arm 105a according to the first shooting angle and to arrange the second arm 105b according to the second shooting angle. Execute the first determination. That is, the determination function 110c is set for whether or not the first arm 105a can be arranged according to the first shooting angle set for the first arm 105a, and for the second arm 105b. It is determined whether or not it is possible to arrange the second arm 105b according to the second shooting angle.

For example, the determination function 110c determines whether or not the first shooting angle "RAO: 10 °, CAU: 3 °" accepted by the reception function 110b is included in the movable range of the first arm 105a. Further, the determination function 110c determines whether or not the second shooting angle "LAO: 3 °, CRA: 10 °" received by the reception function 110b is included in the movable range of the second arm 105b.

Here, the first shooting angle "RAO: 10 °, CAU: 3 °" is included in the movable range of the first arm 105a, and the second shooting angle "LAO: 3 °, CRA: 10" When "°" is included in the movable range of the second arm 105b, the determination function 110c determines that it is "possible" in the first determination. In this case, the control function 110a allocates the first arm 105a and the second arm 105b to the first shooting angle and the second shooting angle, respectively, and the first arm 105a and the second arm 105a and the second arm 105a are assigned according to the allocation. Arm 105b is arranged. That is, the control function 110a arranges the first arm 105a according to the shooting angle "RAO: 10 °, CAU: 3 °" for the first arm 105a, and the shooting angle "LAO" for the second arm 105b. The second arm 105b is arranged according to ": 3 °, CRA: 10 °".

On the other hand, when the first shooting angle "RAO: 10 °, CAU: 3 °" is not included in the movable range of the first arm 105a, or when the second shooting angle "LAO: 3 °, CRA:" When "10 °" is not included in the movable range of the second arm 105b, the determination function 110c determines that it is "not possible" in the first determination. In this case, the determination function 110c determines whether or not it is possible to arrange the second arm 105b according to the first shooting angle and to arrange the first arm 105a according to the second shooting angle. Execute the second determination. That is, the determination function 110c is set for whether or not the second arm 105b can be arranged according to the first shooting angle set for the first arm 105a, and for the second arm 105b. It is determined whether or not it is possible to arrange the first arm 105a according to the second shooting angle.

For example, the determination function 110c determines whether or not the first shooting angle "RAO: 10 °, CAU: 3 °" accepted by the reception function 110b is included in the movable range of the second arm 105b. Further, the determination function 110c determines whether or not the second shooting angle "LAO: 3 °, CRA: 10 °" accepted by the reception function 110b is included in the movable range of the first arm 105a.

Next, the display control function 110d displays the results of the first determination and the second determination. For example, the display control function 110d displays on the display 108 to the effect that it is determined as "not possible" in the first determination. Further, the display control function 110d identifiablely displays on the display 108 whether it is determined to be "possible" or "not possible" in the second determination. That is, the display control function 110d is "possible" in both the case where it is determined as "not possible" in the first determination and "possible" in the second determination and in both the first determination and the second determination. The case where it is determined that "is not" is displayed in an identifiable manner.

For example, the display control function 110d changes the character colors of the areas R25 and R26 of FIG. 4 depending on whether it is determined to be “possible” or “not possible” in the second determination. As an example, the display control function 110d sets the character color to "white" when it is determined to be "possible" in the second determination, and sets the character color to "white" when it is determined to be "not possible" in the second determination. The text color is "red".

To give another example, when the display control function 110d is determined to be “possible” in the second determination, as shown in FIG. 5, the display angles of the regions R21 and R25 and the regions R22 and R26 Display by exchanging the display angle. As a result, the display control function 110d can arrange the second arm 105b according to the first shooting angle "RAO: 10 °, CAU: 3 °" set for the first arm 105a. Yes, and the operator can arrange the first arm 105a according to the second shooting angle "LAO: 3 °, CRA: 10 °" set for the second arm 105b. Present to. On the other hand, when it is determined as "not possible" in the second determination, the display control function 110d sets, for example, the character color of the area R25 and the area R26 to "red". Note that FIG. 5 is a diagram showing a display example of the determination result according to the second embodiment.

Next, the control function 110a determines the allocation of the first arm 105a and the second arm 105b to the first shooting angle and the second shooting angle. For example, when it is determined as "possible" in the second determination, the control function 110a assigns the second arm 105b and the first arm 105a to the first photographing angle and the second photographing angle, respectively. Alternatively, when it is determined as "possible" in the second determination, the control function 110a receives an input operation from the operator who has referred to the results of the first determination and the second determination, thereby taking the first image. The second arm 105b and the first arm 105a are assigned to the angle and the second shooting angle, respectively. Further, when it is determined that "it is not possible" in both the first determination and the second determination, the reception function 110b again accepts the input operation of the first shooting angle and the second shooting angle.

Next, the control function 110a arranges the first arm 105a and the second arm 105b according to the determined allocation. Then, the control function 110a generates X-rays from the first X-ray tube 102a and the second X-ray tube 102b to execute shooting at the first shooting angle and the second shooting angle, and the first shooting is performed. The X-ray image data and the second X-ray image data are collected. Further, the display control function 110d displays the first X-ray image data collected at the first shooting angle and the second X-ray image data collected at the second shooting angle. For example, the display control function 110d causes the display 108 to display the perspective image of the first shooting angle and the perspective image of the second shooting angle.

Next, an example of the processing procedure by the X-ray diagnostic apparatus 10 will be described with reference to FIG. FIG. 6 is a flowchart for explaining a series of processes of the X-ray diagnostic apparatus 10 according to the second embodiment. Step S201, step S209, step S210, and step S211 are steps corresponding to the control function 110a. Step S203 and step S208 are steps corresponding to the reception function 110b. Step S204, step S205 and step S206 are steps corresponding to the determination function 110c. Step S202, step S207, and step S212 are steps corresponding to the display control function 110d.

First, the processing circuit 110 executes rotational imaging of the subject P and collects three-dimensional X-ray image data I1 (step S201). Next, the processing circuit 110 rotatably displays the three-dimensional X-ray image data I1 on the display 108 (step S202). Next, the processing circuit 110 receives an input operation of the first shooting angle and the second shooting angle (step S203). Next, the processing circuit 110 executes the first determination (step S204).

Here, the processing circuit 110 determines whether or not it is determined to be "possible" in the first determination (step S205). When it is determined as "not possible" in the first determination (step S205 negative), the processing circuit 110 executes the second determination (step S206) and displays the results of the first determination and the second determination. (Step S207).

When it is determined as "possible" in the first determination (step S205 affirmative), or after step S207, the processing circuit 110 determines whether or not to change the photographing angle (step S208). For example, when it is determined that "it is not possible" in both the first determination and the second determination, or when an input operation for resetting the shooting angle is received from the operator, the processing circuit 110 takes a picture. It is determined that the angle is changed (affirmation in step S208), and the process proceeds to step S202 again. On the other hand, when it is determined that the shooting angle is not changed (step S208 denied), the processing circuit 110 determines the allocation of the first arm 105a and the second arm 105b to the first shooting angle and the second shooting angle. (Step S209).

Next, the processing circuit 110 arranges the first arm 105a and the second arm 105b according to the determined allocation (step S210). Next, the processing circuit 110 executes imaging at the first imaging angle and the second imaging angle, and collects the first X-ray image data and the second X-ray image data (step S211). Then, the processing circuit 110 displays the collected first X-ray image data and the second X-ray image data on the display 108 (step S212), and ends the processing. In addition, step S211 and step S212 may be performed in parallel. That is, in step S211 and step S212, the processing circuit 110 may display the perspective image of the first photographing angle and the perspective image of the second photographing angle on the display 108.

As described above, according to the second embodiment, the determination function 110c executes the second determination when it is determined that the determination is "not possible" in the first determination. Therefore, the X-ray diagnostic apparatus 10 according to the first embodiment can improve the degree of freedom in setting the imaging angle. For example, the X-ray diagnostic apparatus 10 may be usable if the two imaging angles are exchanged when the "imaging angle for the C arm" or the "imaging angle for the Ω arm" is input. Therefore, it is possible to flexibly determine whether or not the shooting angle is desired by the operator, and improve the degree of freedom in setting the shooting angle.

(Third Embodiment)
By the way, although the first and second embodiments have been described so far, various different embodiments may be implemented in addition to the above-mentioned first and second embodiments.

In the above-described embodiment, the three-dimensional X-ray image data I1 has been described as an example of the three-dimensional medical image data. However, the embodiment is not limited to this. For example, when accepting input operations for the first imaging angle and the second imaging angle, the display control function 110d displays three-dimensional medical image data collected by another medical image diagnostic device different from the X-ray diagnostic device 10. It may be displayed rotatably at 108.

For example, the X-ray diagnostic apparatus 10 is connected to an X-ray CT (Computed Tomography) apparatus via a network. In this case, first, the X-ray CT apparatus collects three-dimensional CT image data from the subject P. Specifically, the X-ray CT apparatus executes a CT scan on the subject P and collects projection data. Next, the X-ray CT apparatus generates a plurality of tomographic images based on the projection data. Specifically, the X-ray CT apparatus reconstructs a plurality of tomographic images by performing reconstruction processing using a filter correction back projection method, a successive approximation reconstruction method, or the like on the projected data. Next, the X-ray CT apparatus generates three-dimensional CT image data based on a plurality of tomographic images. For example, an X-ray CT apparatus generates three-dimensional CT image data by arranging a plurality of tomographic images in a three-dimensional space and performing interpolation processing between the tomographic images. Then, the X-ray CT apparatus outputs the generated three-dimensional CT image data to the X-ray diagnostic apparatus 10.

Next, the display control function 110d rotatably displays the three-dimensional CT image data received from the X-ray CT apparatus on the display 108. Next, the reception function 110b accepts the operation of selecting the display angle of the three-dimensional CT image data as the input operation of the first shooting angle and the second shooting angle. Next, the determination function 110c executes the first determination and the second determination based on the first shooting angle and the second shooting angle received by the reception function 110b. Then, the display control function 110d displays the first determination and the second determination on the display 108.

Further, in the above-described embodiment, the case where the first determination and the second determination are executed based on the first shooting angle and the second shooting angle received by the reception function 110b has been described. However, the embodiment is not limited to this. For example, the determination function 110c may execute the first determination and the second determination based on the predetermined first imaging angle and the second imaging angle.

As an example, the determination function 110c acquires test information (test site, case, etc.) of the subject P from a system such as HIS (Hospital Information System) or RIS (Radiology Information System). Next, the determination function 110c acquires the imaging angles set in advance according to the inspection information as the first imaging angle and the second imaging angle. Then, the determination function 110c executes the first determination and the second determination based on the first imaging angle and the second imaging angle acquired according to the inspection information.

Further, in the above-described embodiment, the first arm 105a (C arm) has been described as an example of the first arm. Further, as an example of the second arm, the second arm 105b (Ω arm) has been described. However, the embodiment is not limited to this. For example, the first arm may be the second arm 105b and the second arm may be the first arm 105a.

Further, in the above-described embodiment, the processing circuit 110 in the X-ray diagnostic apparatus 10 has been described as having the determination function 110c. However, the embodiment is not limited to this. For example, the processing circuit of the medical information processing device connected to the X-ray diagnostic device 10 may have a function corresponding to the determination function 110c.

For example, as shown in FIG. 7, the X-ray diagnostic apparatus 10 is connected to the image storage apparatus 20 and the medical information processing apparatus 30 via the network NW. Note that FIG. 7 is a block diagram showing an example of the configuration of the medical information processing system 1 according to the third embodiment.

The image storage device 20 stores the three-dimensional medical image data of the subject P. As an example, the image storage device 20 includes three-dimensional X-ray image data I1 of the subject P collected by the X-ray diagnostic apparatus 10 and three-dimensional CT of the subject P collected by an X-ray CT device (not shown). The image data is received and stored in a memory provided inside or outside the device. For example, the image storage device 20 is realized by a computer device such as a server device.

The medical information processing device 30 includes an input interface 31, a display 32, a memory 33, and a processing circuit 34. The input interface 31 receives various input operations from the operator, converts the received input operations into electric signals, and outputs the received input operations to the processing circuit 34. For example, the input interface 31 includes a mouse, a keyboard, a trackball, a switch, a button, a joystick, a touch pad for performing input operations by touching an operation surface, a touch screen in which a display screen and a touch pad are integrated, and an optical sensor. It is realized by the non-contact input circuit, voice input circuit, etc. used. The input interface 31 may be composed of a tablet terminal or the like capable of wireless communication with the main body of the medical information processing device 30. Further, the input interface 31 is not limited to one provided with physical operating parts such as a mouse and a keyboard. For example, an electric signal processing circuit that receives an electric signal corresponding to an input operation from an external input device provided separately from the medical information processing device 30 and outputs the electric signal to the processing circuit 34 is also an input interface 31. Included in the example.

The display 32 displays various information. For example, the display 32 is a liquid crystal display or a CRT display. The display 32 may be a desktop type, or may be composed of a tablet terminal or the like capable of wireless communication with the main body of the medical information processing device 30.

The memory 33 is realized by, for example, a semiconductor memory element such as a RAM or a flash memory, a hard disk, an optical disk, or the like. For example, the memory 33 stores the three-dimensional medical data of the subject P. Further, for example, the memory 33 stores a program for the circuit included in the medical information processing apparatus 30 to realize its function. The memory 33 may be realized by a server group (cloud) connected to the medical information processing device 30 via the network NW.

The processing circuit 34 controls the operation of the entire medical information processing apparatus 30 by executing the reception function 34a, the determination function 34b, the display control function 34c, and the output function 34d. Here, the reception function 34a is an example of the reception unit. The determination function 34b is an example of a determination unit. The display control function 34c is an example of a display control unit. The output function 34d is an example of an output unit.

For example, the processing circuit 34 receives the input operation of the first shooting angle and the second shooting angle by reading the program corresponding to the reception function 34a from the memory 33 and executing the program. Further, for example, the processing circuit 34 reads the program corresponding to the determination function 34b from the memory 33 and executes the first determination and the second determination based on the first imaging angle and the second imaging angle. Execute the judgment. Further, for example, the processing circuit 34 reads the program corresponding to the display control function 34c from the memory 33 and executes it to display the results of the first determination and the second determination. Further, for example, the processing circuit 34 reads the program corresponding to the output function 34d from the memory 33 and executes it, thereby transmitting information indicating the results of the first determination and the second determination to the X-ray diagnostic apparatus 10. And output.

In the medical information processing apparatus 30 shown in FIG. 7, each processing function is stored in the memory 33 in the form of a program that can be executed by a computer. The processing circuit 34 is a processor that realizes a function corresponding to each program by reading a program from the memory 33 and executing the program. In other words, the processing circuit 34 in the state where each program is read has a function corresponding to the read program. Note that FIG. 7 shows a case where each processing function of the reception function 34a, the determination function 34b, the display control function 34c and the output function 34d is realized by a single processing circuit 34, but the embodiment is limited to this. It is not something that can be done. For example, the processing circuit 34 may be configured by combining a plurality of independent processors, and each processor may execute each program to realize each processing function. Further, each processing function of the processing circuit 34 may be appropriately distributed or integrated into a single or a plurality of processing circuits.

For example, the display control function 34c first rotatably displays the three-dimensional medical image data of the subject P on the display 32. As an example, the display control function 34c transmits the three-dimensional medical image data stored by the image storage device 20 and the three-dimensional X-ray image data I1 collected by the X-ray diagnostic device 10 via the network NW. It is acquired and rotatably displayed on the display 32. Next, the reception function 34a accepts the operation of selecting the display angle of the three-dimensional medical image data on the display 32 as the input operation of the first shooting angle and the second shooting angle.

Next, the determination function 34b arranges the first arm 105a according to the first shooting angle and the second shooting based on the first shooting angle and the second shooting angle received by the reception function 34a. The first determination to determine whether or not the second arm 105b can be arranged according to the angle, the second arm 105b to be arranged according to the first shooting angle, and the second shooting angle. A second determination is performed to determine whether or not the first arm 105a can be arranged accordingly. The determination function 34b may use a predetermined first shooting angle and a second shooting angle instead of the first shooting angle and the second shooting angle received by the reception function 34a.

Next, the output function 34d outputs information indicating the results of the first determination and the second determination to the X-ray diagnostic apparatus 10. For example, the output function 34d determines the allocation of the first arm 105a and the second arm 105b to the first shooting angle and the second shooting angle based on the results of the first determination and the second determination. .. As an example, the display control function 34c displays the results of the first determination and the second determination on the display 32. Next, the output function 34d receives an input operation from the operator who has referred to the results of the first determination and the second determination, so that the first arm 105a with respect to the first imaging angle and the second imaging angle And the allocation of the second arm 105b is determined. Then, the output function 34d outputs the determined allocation to the X-ray diagnostic apparatus 10 as information indicating the results of the first determination and the second determination.

To give another example, the output function 34d outputs the results of the first determination and the second determination to the X-ray diagnostic apparatus 10 as information indicating the results of the first determination and the second determination. .. In this case, the control function 110a in the X-ray diagnostic apparatus 10 has a second imaging angle with respect to the first imaging angle and the second imaging angle based on the results of the first determination and the second determination received from the medical information processing apparatus 30. The allocation of the first arm 105a and the second arm 105b is determined. As an example, the display control function 110d displays the results of the first determination and the second determination on the display 108. Then, the control function 110a receives an input operation from the operator who has referred to the results of the first determination and the second determination, so that the first arm 105a and the first arm 105a with respect to the first imaging angle and the second imaging angle The allocation of the second arm 105b is determined.

The word "processor" used in the above description means, for example, a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), an application specific integrated circuit (ASIC), or a programmable logic device (for example, a programmable logic device). It means a circuit such as a simple programmable logic device (SPLD), a complex programmable logic device (CPLD), and a field programmable gate array (FPGA). The processor realizes the function by reading and executing the program stored in the memory 107 or the memory 33.

In addition, in FIG. 1 and FIG. 7, it has been described that a single memory 107 or memory 33 stores a program corresponding to each processing function. However, a plurality of memories 107 may be distributed and arranged, and the processing circuit 110 may be configured to read a corresponding program from the individual memories 107. Similarly, a plurality of memories 33 may be distributed and arranged, and the processing circuit 34 may be configured to read a corresponding program from the individual memories 33. Further, instead of storing the program in the memory 33 and the memory 107, the program may be directly incorporated in the circuit of the processor. In this case, the processor realizes the function by reading and executing the program embedded in the circuit.

Further, the processing circuit 110 and the processing circuit 34 may realize the functions by utilizing the processor of the external device connected via the network NW. For example, the processing circuit 110 reads a program corresponding to each function from the memory 107 and executes it, and also uses a server group (cloud) connected to the X-ray diagnostic apparatus 10 via the network NW as a computational resource. , Each function shown in FIG. 1 is realized.

Each component of each device according to the above-described embodiment is a functional concept, and does not necessarily have to be physically configured as shown in the figure. That is, the specific form of distribution / integration of each device is not limited to the one shown in the figure, and all or part of the device is functionally or physically dispersed / physically distributed in arbitrary units according to various loads and usage conditions. It can be integrated and configured. Further, each processing function performed by each device can be realized by a CPU and a program analyzed and executed by the CPU, or can be realized as hardware by wired logic.

Further, the medical information processing method described in the above-described embodiment can be realized by executing a medical information processing program prepared in advance on a computer such as a personal computer or a workstation. This medical information processing program can be distributed via a network such as the Internet. Further, this medical information processing program is recorded on a non-transient recording medium such as a hard disk, a flexible disk (FD), a CD-ROM, an MO, or a DVD that can be read by a computer, and is read from the recording medium by the computer. It can also be done by.

According to at least one embodiment described above, the degree of freedom in setting the imaging angle can be improved in the biplane X-ray diagnostic apparatus.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention as well as the invention described in the claims and the equivalent scope thereof.

1 Medical information processing system 10 X-ray diagnostic apparatus 102a First X-ray tube 102b Second X-ray tube 105a First arm 105b Second arm 106a First X-ray detector 106b Second X-ray detector 110 Processing circuit 110a Control function 110b Reception function 110c Judgment function 110d Display control function 30 Medical information processing device 34 Processing circuit 34a Reception function 34b Judgment function 34c Display control function 34d Output function

Claims (10)

A first arm that holds the first X-ray generator and the first X-ray detector,
A second arm that holds the second X-ray generator and the second X-ray detector,
A first determination for determining whether or not it is possible to arrange the first arm according to the first photographing angle and the second arm according to the second photographing angle, and the first determination. The second arm is arranged according to the shooting angle of 1, and the second determination of determining whether or not the first arm can be arranged according to the second shooting angle is executed. An X-ray diagnostic device including a judgment unit. The X-ray diagnostic apparatus according to claim 1, further comprising a display control unit that displays the results of the first determination and the second determination. When the display control unit is determined to be possible in both the first determination and the second determination, and when it is determined to be possible in either the first determination and the second determination. The X-ray diagnostic apparatus according to claim 2, wherein the case where it is determined that it is not possible in both the first determination and the second determination is identifiablely displayed. The display control unit is further determined to be possible in the first determination and not possible in the second determination, and is determined not to be possible in the first determination, and the second determination. The X-ray diagnostic apparatus according to claim 3, wherein the case where it is determined to be possible in the determination is displayed so as to be distinguishable. The X-ray diagnostic apparatus according to claim 1, wherein the determination unit executes the second determination when it is determined that the determination is not possible in the first determination. The X-ray diagnostic apparatus according to claim 5, further comprising a display control unit that displays the results of the first determination and the second determination. The display control unit determines that it is not possible in the first determination and that it is possible in the second determination, and that it is not possible in both the first determination and the second determination. The X-ray diagnostic apparatus according to claim 6, wherein the case is identifiable. A reception unit that accepts input operations for the first shooting angle and the second shooting angle is further provided.
Any of claims 1 to 7, wherein the determination unit executes the first determination and the second determination based on the first imaging angle and the second imaging angle received by the reception unit. The X-ray diagnostic apparatus according to item 1. It also has a display control unit that rotatably displays a three-dimensional medical image of the subject.
The X-ray diagnostic apparatus according to claim 8, wherein the reception unit accepts an operation of selecting a display angle of the three-dimensional medical image as an input operation of the first imaging angle and the second imaging angle. The first determination of determining whether or not it is possible to arrange the first arm according to the first shooting angle and the second arm according to the second shooting angle, and the first determination described above. A determination unit that executes a second determination for arranging the second arm according to a shooting angle and determining whether or not the first arm can be arranged according to the second shooting angle. When,
A medical information processing apparatus including an output unit that outputs information indicating the results of the first determination and the second determination to the first arm and the X-ray diagnostic apparatus including the second arm. ..

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