JP6804491B2 - X-ray diagnostic equipment - Google Patents

Description

Embodiments of the present invention relate to an X-ray diagnostic apparatus.

The X-ray diagnostic device is a device that irradiates a subject such as a patient with X-rays by an X-ray irradiation unit, detects X-rays transmitted through the subject by an X-ray detector, and obtains an X-ray image of the subject. Is. The X-ray diagnostic apparatus includes, for example, an X-ray irradiation unit, a C-arm that holds the X-ray detector in a facing state, and the X-ray irradiation unit and the X-ray detector at the imaging position of the subject on the bed. An X-ray diagnostic device has been developed that moves an X-ray image of a region of interest of a subject and displays it on a monitor.

In the above-mentioned X-ray diagnostic apparatus, in addition to the normal radiography mode, an X-ray irradiation called a fluoroscopic mode in which a small amount of X-rays are continuously irradiated from the X-ray irradiation unit to continuously display an X-ray image of the subject. There is a mode. The X-ray image captured in this fluoroscopic mode is generally referred to as a fluoroscopic image (perspective image). In particular, a region of interest (ROI) is set in the mask image which is an X-ray image, and X-rays are irradiated only to the set region of interest to obtain a fluoroscopic image (moving image) of the region of interest. A technique (for example, a spot photography method) for displaying a moving image by superimposing it on a mask image (still image) has also been proposed.

An X-ray diagnostic apparatus capable of capturing a fluoroscopic image in this way is used, for example, when treating an aneurysm. As a treatment method for aneurysms, there is stent graft placement under fluoroscopy. In this stained graft placement, a transparent sheet is attached to the monitor screen during fluoroscopic image display, and a pen or the like is used on the transparent sheet in order to grasp the position of the branched blood vessel when the operator places the stent graft. The mark is written by hand.

Japanese Unexamined Patent Publication No. 2003-265449

However, as described above, when a mark is handwritten on the transparent sheet on the monitor screen, the mark on the transparent sheet becomes meaningless when the imaging position is changed, so that a plurality of imaging positions (for example, imaging angles) If you try to confirm from, it will be necessary to replace the transparent sheet and fill in the mark by hand every time you change the imaging position, which is troublesome. Further, even when utilizing a perspective roadmap that superimposes perspective images in real time, it takes time and effort to perform confirmation at a plurality of angles because the above-mentioned rework is required.

An object to be solved by the present invention is to provide an X-ray diagnostic apparatus capable of improving the work efficiency of a user.

The X-ray diagnostic apparatus according to the embodiment has an imaging unit that captures an X-ray image of a subject, an input unit that accepts an operation of inputting a figure indicating a blood vessel wall to the X-ray image, and an X-ray image. A storage unit that stores the device position information of the imaging unit at the time and a figure indicating the blood vessel wall input by the input unit in association with each other, a fluoroscopic image captured by the imaging unit, and a blood vessel input via the input unit. The control unit is provided with a control unit that performs a process of displaying a figure indicating a wall on the display unit in an overlapping manner, and the control unit is a perspective image captured by the image pickup unit in a state where the image pickup unit is positioned at a position based on the device position information. When the image and the figure indicating the blood vessel wall managed in association with the position are superimposed and displayed on the display unit, and the enlargement ratio of the display of the perspective image displayed on the display unit is changed. The display state of the figure showing the blood vessel wall is changed so as to follow the change in the enlargement ratio of the display.

It is a figure which shows the schematic structure of the X-ray diagnostic apparatus which concerns on one Embodiment. It is a flowchart which shows the flow of the reproduction process performed by the X-ray diagnostic apparatus shown in FIG. It is explanatory drawing for demonstrating an example of a mask image and annotation information (additional information). It is explanatory drawing for demonstrating another example of a mask image and annotation information. It is explanatory drawing for demonstrating storage of a mask image, annotation information and apparatus position information.

An embodiment will be described with reference to the drawings.

As shown in FIG. 1, the X-ray diagnostic apparatus 1 according to the embodiment includes a sleeper 2 on which a subject P such as a patient is placed, an imaging unit 3 that images the subject P on the sleeper 2, and a unit thereof. It includes a holding device 4 for holding an imaging unit 3, an image collecting device 5 for collecting X-ray images, a display unit 6 for displaying various images such as X-ray images, and a control device 7 for controlling each unit. ..

The bed 2 includes a rectangular top plate 2a on which the subject P is placed, and a top plate driving unit 2b that supports the top plate 2a and moves the top plate 2a in the horizontal direction and the vertical direction. The top plate drive unit 2b has a mechanism for moving the top plate 2a, a drive source for the movement, and the like. This drive source is electrically connected to the control device 7, and its drive is controlled by the control device 7. The bed 2 moves the top plate 2a to a desired height by the top plate driving unit 2b, and further moves the top plate 2a in the horizontal direction to move the subject P on the top plate 2a to a desired position. Such a bed 2 functions as a moving mechanism for relatively moving the subject P (top plate 2a) and the imaging unit 3.

The imaging unit 3 includes an X-ray irradiation unit 3a that irradiates the subject P on the top plate 2a with X-rays, and an X-ray detector 3b that detects the X-rays that have passed through the subject P. .. The imaging unit 3 is provided so as to be movable around the top plate 2a, and images an X-ray image of the subject P on the top plate 2a from a desired imaging position. Examples of this X-ray image include a fluoroscopic image of the heart of the region of interest, a mask image, and the like.

The X-ray irradiation unit 3a narrows down the X-ray tube 3a1 that emits X-rays and the X-rays emitted from the X-ray tube 3a1 and adjusts the X-ray irradiation field (irradiation range). It includes an X-ray high voltage generator 3a3 that generates a high voltage to be supplied to the wire tube 3a1. The X-ray irradiation unit 3a supplies a high voltage to the X-ray tube 3a1 by the X-ray high voltage generation unit 3a3, emits X-rays by the X-ray tube 3a1, and further emits the X-rays to the X-ray filter 3a2. The subject P on the top plate 2a is irradiated with the X-ray tube.

Here, as the X-ray diaphragm 3a2, various types of X-ray diaphragms can be used. For example, the position of a window formed by combining four X-ray blocking members such as lead in a grid shape, moving the X-ray blocking members in the direction of contact and separation from each other, and being surrounded by each X-ray blocking member. And an X-ray squeezer whose size is appropriately changed may be used. The window portion serves as a passage region through which X-rays pass, and each X-ray blocking member other than the window serves as a shielding region that absorbs and shields X-rays.

The X-ray detector 3b is provided in the holding device 4 so as to face the X-ray tube 3a1 and is formed so as to be movable in the contacting / separating direction with respect to the facing X-ray tube 3a1. The X-ray detector 3b is electrically connected to the control device 7, and transmits the detected X-ray dose, that is, an X-ray image signal to the control device 7. As the X-ray detector 3b, for example, an image intensifier, an X-ray plane detector (FPD), or the like can be used, and a direct conversion method for directly converting X-ray projection information into an electric signal. It is also possible to use an X-ray plane detector.

The holding device 4 rotates a holding arm 4a that holds the X-ray tube 3a1 and the X-ray detector 3b facing each other, an arm support portion 4b that supports the holding arm 4a so as to be slidable, and the arm support portion 4b. It is equipped with a support column 4c that supports it movably. The holding device 4 has a mechanism for movement, a drive source for the movement, and the like. This drive source is electrically connected to the control device 7, and its drive is controlled by the control device 7. Such a holding device 4 functions as a moving mechanism for relatively moving the subject P (top plate 2a) and the imaging unit 3.

The holding arm 4a is, for example, a C-shaped C arm, and is provided on the arm support portion 4b so as to be slidable in the direction in which the arm extends. X-ray tubes 3a1 and X-ray detectors 3b are individually provided at both ends of the holding arm 4a in the longitudinal direction. Further, the arm support portion 4b holds the holding arm 4a so as to be slidable, and is rotatably provided on the support column 4c. The support column 4c rotatably supports the arm support portion 4b and is erected on the floor surface.

The image collecting device 5 includes an image processing unit 5a that performs a process of generating an X-ray image based on the X-ray dose detected by the X-ray detector 3b, and an image storage unit 5b that stores the generated X-ray image. ing.

The image processing unit 5a generates an X-ray image of the subject P by various image processing based on the X-ray dose, and transmits the generated X-ray image to the image storage unit 5b. The image storage unit 5b stores the X-ray image transmitted from the image processing unit 5a. As the image storage unit 5b, for example, a magnetic disk device, a semiconductor disk device (flash memory), or the like can be used.

The display unit 6 is a display device that displays various images such as an X-ray image transmitted from the image collection device 5. As the display unit 6, for example, a liquid crystal display, a CRT (Cathode Ray Tube) display, or the like can be used.

The control device 7 is input by a system control unit 7a that controls each part of the system, an X-ray control unit 7b that controls an X-ray high voltage generation unit 3a3, and an operator (user) such as a doctor, an assistant, or an engineer. It is provided with an input unit 7c to be input.

The system control unit 7a controls each unit based on various stored programs and various data. In particular, the sleeper 2, the imaging unit 3, the holding device 4, etc., depending on the input operation of the operator to the input unit 7c, etc. A control unit 7a1 for controlling the above, an acquisition unit 7a2 for acquiring device position information of the sleeper 2 and the holding device 4 (top plate 2a and the imaging unit 3), and a management unit 7a3 for managing various information are provided.

The control unit 7a1 controls the movement of each unit such as the bed 2, the image pickup unit 3, and the holding device 4, and further controls the opening degree of the X-ray diaphragm 3a2 and the display of the display unit 6. For example, when obtaining an X-ray image of the region of interest of the subject P, the opening degree of the X-ray diaphragm 3a2 is set to the aperture for capturing an X-ray image of the region of interest.

The acquisition unit 7a2 acquires device position information such as the bed 2 and the holding device 4 when the X-ray image is captured. For example, the acquisition unit 7a2 can obtain the position information of the top plate 2a based on the output value from the position detection unit (for example, the encoder) provided in the drive source (for example, the servomotor) of the bed 2. Is. Further, the acquisition unit 7a2 receives position information (for example, arm) of the holding arm 4a based on an output value from a position detecting unit (for example, an encoder) provided in a drive source (for example, a servomotor) of the holding device 4. It is possible to obtain the angle, horizontal position of the arm, etc.). From the position information of the bed 2 and the holding device 4, it is possible to grasp the relative position of the subject P on the top plate 2a and the imaging unit 3. In addition, the acquisition unit 7a2 opens the X-ray diaphragm 3a2 based on the output value from the position detection unit (for example, the encoder) provided in the drive source (for example, a servomotor) of the X-ray diaphragm 3a2. It is possible to obtain degree information (for example, position information of an X-ray blocking member).

The management unit 7a3 has a storage unit for storing various types of information, and stores and manages the mask image, annotation information, and device position information in association with the storage unit. As the storage unit, for example, a ROM, RAM, a magnetic disk device, a semiconductor disk device (flash memory), or the like can be used.

Here, the annotation information (additional information) is incidental information that refers to all the information that can be attached to the image. The annotation information includes additional information having coordinates on the display screen and additional information having no coordinates on the display screen. Additional information with coordinates on the display screen includes arrows drawn by the user to indicate a specific object, hand-drawn blood vessel walls, and comments on them. Further, as additional information having no coordinates on the display screen, mechanical information (for example, fusion information) necessary for fusion (fusion) with a certain X-ray image can be mentioned. The mechanical information includes the position and angle of the holding device 4 and the bed 2 (top plate 2a), SID (Source Image Distance: distance between the X-ray tube focus and the image receiving surface), and FOV (Field Of View:). Effective field of view), Zoom (magnification) and the like.

The system control unit 7a outputs various instructions such as image processing execution to the image processing unit 5a of the image collecting device 5. In response to this, the image processing unit 5a will execute the required processing. Each part such as the system control unit 7a and the image processing unit 5a may be configured by hardware such as an electric circuit, or may be configured by software such as a program that executes these functions. Further, it may be composed of a combination of both of them.

The X-ray control unit 7b generates a desired X-ray by the X-ray tube 3a1 in response to the control by the system control unit 7a. Control various conditions. In response to this control, the X-ray high voltage generation unit 3a3 boosts and rectifies the voltage, and supplies the voltage to the X-ray tube 3a1.

The input unit 7c is an operation unit that receives input operations from operators such as doctors, assistants, and technicians. As the input unit 7c, for example, an input device such as a joystick, a keyboard, a mouse, a foot switch, or a touch panel can be used. As an example, the operator inputs and operates the input unit 7c to move the imaging unit 3, that is, the X-ray tube 3a1 and the X-ray detector 3b to desired imaging positions.

Next, the reproduction process performed by the above-mentioned X-ray diagnostic apparatus 1 will be described.

As shown in FIG. 2, the mask image is captured and displayed by the display unit 6 (step S1), and it is determined whether or not the annotation information has been input (step S2). This determination is repeated until the annotation information is input (NO in step S2).

Here, a user such as a doctor or an assistant operates an input unit 7c such as a mouse, a keyboard, or a touch panel while visually recognizing the mask image displayed by the display unit 6 to input annotation information such as a mark or a comment. It will be.

For example, as shown in FIG. 3, when the mask image A is displayed by the display unit 6, the doctor draws a blood vessel wall (see the thick line in FIG. 3) as a mark A, draws an arrow, and makes a comment A. Fill out. Further, as shown in FIG. 4, even when the mask image B (an image captured from an imaging position different from the above-mentioned mask image A) is displayed by the display unit 6, the doctor can use the blood vessel wall (as a mark B) as a mark B. Draw an arrow (see the thick line in FIG. 4) and enter comment B. The comments include, for example, "arteries can be seen well" and "branched blood vessels can be seen well", and can be freely entered.

If it is determined in step S2 that the annotation information has been input (YES in step S2), it is determined whether or not to register the current device position in the button (step S3). At this time, for example, when the button for instructing registration is pressed by a user such as a doctor, the control unit 7a1 determines that the current device position is registered in the button.

In step S3, when it is determined that the current device position is registered in the button (YES in step S3), the current device position is registered in the button in response to the pressing of the button (step S4), and the annotation information is the mask image and It is associated with the device position information and saved by the management unit 7a3 (step S5). On the other hand, if it is determined that the current device position is not registered in the button (NO in step S3), the annotation information is associated with the mask image and the device position information and saved by the management unit 7a3 without registering the button (step S3). S5).

Here, in step S4, when a button such as a function button is pressed by a user such as a doctor, the current device position is registered in the button, and the button and the current device position information are linked. That is, different buttons are registered for each device position when the mask image is captured. For example, when the device position of the mask image A is registered in the button 1, the device position of the mask image B is registered in the button 2. After that, when the registered button is pressed by the user, the top plate 2a and the holding device 4 are automatically moved to the device position at the time of registration based on the device position information linked to the button. Become.

Further, in step S5, the annotation information is associated and saved together with the mask image and the device position information. For example, as shown in FIG. 3, when annotation information (mark A and comment A) is entered in the mask image A, the annotation information (mark A and comment A) is entered as shown in FIG. The mask image A is stored in association with the device position information (position information a1, a2, ... Of the top plate 2a and the holding device 4) when the mask image A is captured. Similarly, as shown in FIG. 4, when the annotation information (marker B and comment B) is entered in the mask image B, the annotation information (marker B and comment B) is provided as shown in FIG. The mask image B is stored in association with the device position information (position information b1, b2, ... Of the top plate 2a and the holding device 4) when the mask image B is imaged. The position information includes, for example, coordinate information such as a two-dimensional position and a three-dimensional position (including an angle).

After the processing of step S5, it is determined whether or not the imaging of the mask image is completed (step S6). At this time, for example, when the button for instructing the end of imaging is pressed by a user such as a doctor, it is determined that the imaging of the mask image is completed. On the other hand, if the button for instructing the end of imaging is not pressed and the input unit 7c is operated to move the top plate 2a and the holding device 4, the imaging of the mask image is continued.

If it is determined in step S6 that the imaging of the mask image has not been completed (NO in step S6), the process returns to step S1, the imaging of the next mask image is started, and the above-mentioned process is repeated. In this way, annotation information is entered for each mask image, and the annotation information is associated and stored together with the mask image and the device position information when the mask image is imaged.

On the other hand, in step S6, when it is determined that the imaging of the mask image is completed (YES in step S6), any one of button pressing, annotation information selection, mask image selection, and position instruction of the sleeper and the holding device. It is determined whether or not one has been performed (step S7). Hereinafter, these judgments will be described in sequence.

<1. Button press>
If it is determined in step S7 that the button has been pressed (YES in step S7), the sleeper 2 and the holding device 4 (top plate 2a and image pickup unit 3) automatically reach the device position registered in the button. Further, the mask image and annotation information associated with the corresponding device position information are read out and displayed by the display unit 6 (step S8).

When pressing a button, the user operates an input unit 7c such as a mouse or a touch panel, and presses a desired button from a plurality of buttons. The device positions are individually registered in the plurality of buttons such as the function buttons in step S4 described above.

Here, as an example, when the device position when the mask image A is imaged is registered in the button 1, when the button 1 is pressed, the device position information corresponding to the button 1 (top plate 2a and The top plate 2a and the holding device 4 move to a position based on the position information a1, a2, ...) Of the holding device 4. Further, the mask image A and the annotation information (marker A and comment A) associated with the above-mentioned device position information are read from the management unit 7a3 (see FIG. 5) and displayed by the display unit 6 (see FIG. 3).

Further, when the device position when the mask image B is imaged is registered in the button 2, when the button 2 is pressed, the device position information corresponding to the button 2 (top plate 2a and holding device 4) The top plate 2a and the holding device 4 move to a position based on the position information b1, b2, ...). Further, the mask image B and the annotation information (marker B and comment B) associated with the above-mentioned device position information are read from the management unit 7a3 (see FIG. 5) and displayed by the display unit 6 (see FIG. 3). In this way, it is possible to reproduce the device position and further reproduce the display of the mask image and the annotation information (marks and comments) simply by pressing each of the registered buttons.

<2. Selection of annotation information>
If it is determined in step S7 that the annotation information has been selected (YES in step S7), the selected annotation information, and the mask image and device position information associated with the annotation information are displayed. After being read, the sleeper 2 and the holding device 4 (top plate 2a and imaging unit 3) are automatically moved to the device position based on the read device position information, and further, the read mask image and annotation. The information is displayed by the display unit 6 (step S8).

In the selection of annotation information, annotation information, for example, comment information is listed and displayed by the display unit 6 (list display). In the list, not only the comment but also the mask image may be reduced and displayed as thumbnails. The user operates the input unit 7c such as a mouse or a touch panel, and selects desired annotation information from the list.

Here, as an example, when the comment A is selected from the list, the mask image A associated with the annotation information including the comment A and the device position information (position information a1, a2, of the top plate 2a and the holding device 4). (・ ・) Is read from the management unit 7a3 (see FIG. 5), and the top plate 2a and the holding device 4 are automatically moved to a position based on the device position information. Further, the annotation information including the selected comment A and the read mask image A are displayed by the display unit 6 (see FIG. 3).

Further, when the comment B is selected from the list, the mask image B associated with the annotation information including the comment B and the device position information (position information b1, b2, ... Of the top plate 2a and the holding device 4) are added. It is read from the management unit 7a3 (see FIG. 5), and the top plate 2a and the holding device 4 automatically move to a position based on the device position information. Further, the annotation information including the selected comment B and the read mask image B are displayed by the display unit 6 (see FIG. 4). In this way, it is possible to reproduce the device position and further reproduce the display of the mask image and the annotation information (marks and comments) simply by selecting the annotation information.

<3. Selection of mask image>
If it is determined in step S7 that the mask image has been selected (YES in step S7), the selected mask image, and the annotation image and device position information associated with the mask image are displayed. After being read, the sleeper 2 and the holding device 4 (top plate 2a and imaging unit 3) are automatically moved to the device position based on the read device position information, and further, the read mask image and annotation. The information is displayed by the display unit 6 (step S8).

In the selection of the mask image, the mask image is thumbnailed and displayed by the display unit 6 (thumbnail display). The user operates the input unit 7c such as a mouse or a touch panel, and selects a desired mask image from the thumbnail. The display at this time is not limited to the thumbnail display.

Here, as an example, when the mask image A is selected from the list, the annotation information (mark A and comment A) associated with the mask image A and the device position information (position information a1 of the top plate 2a and the holding device 4). , A2, ...) Are read from the management unit 7a3 (see FIG. 5), and the top plate 2a and the holding device 4 are automatically moved to a position based on the device position information. Further, the selected mask image A and the read annotation information (marker A and comment A) are displayed by the display unit 6 (see FIG. 3).

When the mask image B is selected from the list, the annotation information (marker B and comment B) associated with the mask image B and the device position information (position information b1, b2, of the top plate 2a and the holding device 4) ... (・ ・) Is read from the management unit 7a3 (see FIG. 5), and the top plate 2a and the holding device 4 are automatically moved to a position based on the device position information. Further, the selected mask image B and the read annotation information (marker B and comment B) are displayed by the display unit 6 (see FIG. 4). In this way, it is possible to reproduce the device position and further reproduce the display of the mask image and the annotation information (marks and comments) simply by selecting the mask image.

<4. Position indication of holding device and bed>
If it is determined in step S7 that the position of the sleeper 2 and the holding device 4 has been instructed (YES in step S7), the sleeper 2 and the holding device 4 (YES in step S7) reach the position based on the instructed device position information. The top plate 2a and the imaging unit 3) are automatically moved (auto-positioning), and the mask image and annotation image associated with the device position information are read, and the read mask image and annotation information are read out. It is displayed by the display unit 6 (step S8).

In the position instruction, the user operates an input unit 7c such as a mouse or a touch panel to specify a position such as an angular position of the holding device 4. Not limited to auto-positioning, the holding device 4 may be manually moved to the same desired imaging position.

Here, as an example, when the top plate 2a and the holding device 4 move to a desired imaging position 1, the device position information corresponding to the imaging position 1 (position information a1, a2 of the top plate 2a and the holding device 4 ... The mask image A and annotation information (marker A and comment A) associated with) are read from the management unit 7a3 (see FIG. 5) and displayed by the display unit 6 (see FIG. 3).

Further, when the top plate 2a and the holding device 4 move to the desired imaging position 2, they are associated with the device position information (position information b1, b2, ... Of the top plate 2a and the holding device 4) corresponding to the imaging position 2. The mask image B and annotation information (marker B and comment B) are read from the management unit 7a3 (see FIG. 5) and displayed by the display unit 6 (see FIG. 4). In this way, it is possible to reproduce the display of the mask image and the annotation information (marks and comments) only by reproducing the positions of the top plate 2a and the holding device 4 (imaging unit 3). In the case of manual operation, when the holding device 4 comes to a position based on the device position information, the mask image and annotation information corresponding to the position are displayed.

After the processing of step S8 as described above, it is determined whether or not the inspection is completed (step S9). At this time, for example, when a button for instructing the end of the examination is pressed by a user such as a doctor, it is determined that the examination has been completed. When it is determined that the inspection is completed (YES in step S9), the process is completed. On the other hand, if the inspection end button is not pressed and it is determined that the inspection has not been completed (NO in step S9), the process returns to step S7, and the determination in step S7 is repeated.

According to such a reproduction process, by selecting any one of the mask image, the annotation information, and the device position information, the mask image and the annotation information can be displayed, and the sleeper 2 and the sleeper 2 when the mask image is imaged can be displayed. The positions of the holding device 4, that is, the top plate 2a and the imaging unit 3, can be easily reproduced. As a result, the load on the user is reduced, the work efficiency of the user is improved, and the operation time can be shortened. In addition, since it is easy to confirm from multiple positions, it is possible to improve the success rate of stent graft placement, and it is possible to accurately reproduce mask images at multiple imaging positions. Since it is not necessary to perform unnecessary imaging, it is possible to reduce the exposure dose and the amount of contrast medium used.

As described above, according to the above-described embodiment, the X-ray image obtained by imaging the subject P on the top plate 2a by the imaging unit 3 and the top plate 2a when the X-ray image is imaged. And the device position information with the imaging unit 3 and the annotation information (additional information) added to the X-ray image are associated and managed by the management unit 7a3. As a result, the X-ray image, the device position information, and the annotation information are managed in association with each other. Therefore, by selecting any one of the X-ray image, the device position information, and the annotation information, the other information can be managed by the management unit 7a3. It is possible to read from and use it. That is, by selecting any one of them, the display of the X-ray image and the annotation information, and the device positions of the top plate 2a and the imaging unit 3 when the X-ray image is imaged can be easily reproduced. Therefore, the work efficiency of the user can be improved.

When the annotation information is displayed by the display unit 6, the top plate 2a and the imaging unit 3 are moved to a position based on the device position information associated with the annotation information to be displayed by the moving mechanism (sleeper 2 or holding device 4). The control unit 7a1 performs a process of relatively moving the X-ray image associated with the annotation information of the display target by the display unit 6 together with the annotation information of the display target. As a result, by simply selecting the annotation information, in addition to the annotation information, the display of the X-ray image related thereto, and the device positions of the top plate 2a and the imaging unit 3 when the X-ray image is imaged can be easily obtained. It can be reproduced.

Further, when the X-ray image is displayed by the display unit 6, the top plate 2a and the imaging unit 3 are moved to a position based on the above-mentioned device position information associated with the X-ray image to be displayed by a moving mechanism (sleeper 2 or The holding device 4) performs a relative movement process, and the control unit 7a1 performs a process of displaying the annotation information associated with the X-ray image to be displayed by the display unit 6 together with the X-ray image to be displayed. As a result, by simply selecting an X-ray image, in addition to the X-ray image, annotation information related to the X-ray image can be displayed, and the positions of the top plate 2a and the imaging unit 3 when the X-ray image is imaged can be easily positioned. Can be reproduced in.

Further, when the top plate 2a and the imaging unit 3 are relatively moved by the moving mechanism (sleeper 2 or holding device 4) to the position based on the above-mentioned device position information, the X-ray image and annotation information associated with the device position information are displayed. The control unit 7a1 performs the process of displaying by the display unit 6. Thereby, the display of the X-ray image and the annotation information associated with the position can be easily reproduced only by reproducing the position of the top plate 2a and the holding device 4.

The annotation information added to the X-ray image is not limited to the annotation information added to the X-ray image itself, and can be associated with the annotation information added to other images. For example, the annotation information (fusion information) of the X-ray image and other CT images and the position angle of the holding device 4 are linked. The X-ray image is aligned and fused with the CT image α at an angle a. After that, when the angle a is changed to the angle b, the fusion between the X-ray image and the CT image is canceled at this point. When the angle b is returned to the angle a, refusion is automatically performed at that angle a.

Further, when the display state of the X-ray image displayed by the display unit 6 changes, the display state of the annotation information displayed superimposed on the X-ray image is changed according to the change in the display state. You may. In this case, for example, the display of the annotation information is changed according to the change of the display state such as zoom. As a result, the display state of the annotation information displayed overlaid on the fluoroscopic image as an X-ray image follows changes such as zoom and FOV, so that the annotation information is displayed at the correct position in an easily visible state. You can continue.

Further, the fluoroscopic image captured by the imaging unit 3 and the annotation information managed by the management unit 7a3 are superimposed and displayed by the display unit 6, and the mask image associated with the annotation information to be displayed and the imaging unit 3 display it. A process of superimposing the captured fluoroscopic image and displaying it on the display unit 6 may be performed. As a result, a user such as a doctor can simultaneously display the first image of the fluoroscopic image and the annotation information and the second image (transparent roadmap display) of the fluoroscopic image and the mask image. Further, two display units 6 may be provided, and the first image and the second image may be individually displayed on the display units 6.

Although some embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, 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, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

1 X-ray diagnostic device 2 Sleeper 2a Top plate 3 Imaging unit 4 Holding device 6 Display unit 7a1 Control unit 7a2 Acquisition unit 7a3 Management unit 7c Input unit P Subject

Claims (8)

An imaging unit that captures an X-ray image of the subject,
An input unit that accepts an operation for inputting a figure indicating a blood vessel wall for the X-ray image,
A storage unit that stores the device position information of the imaging unit when the X-ray image is imaged and a figure indicating the blood vessel wall input by the input unit in association with each other.
A control unit that performs a process of superimposing a fluoroscopic image captured by the imaging unit and a figure indicating a blood vessel wall input via the input unit on the display unit.
With
The control unit
In a state where the imaging unit is positioned at a position based on the device position information, the fluoroscopic image captured by the imaging unit and the figure showing the blood vessel wall managed in association with the position are superimposed and displayed. Perform the process of displaying on the part
When the imaging unit moves, the figure showing the blood vessel wall associated with the device position information of the imaging unit after the movement is read out from the storage unit and superimposed on the fluoroscopic image captured by the imaging unit. Performs the process of displaying on the display unit
When the magnification of the fluoroscopic image displayed on the display unit is changed, the display state of the figure showing the blood vessel wall is changed so as to follow the change of the magnification of the display, X-ray diagnosis. apparatus. The X-ray diagnostic apparatus according to claim 1, wherein the control unit changes the display state of a figure showing the blood vessel wall so as to follow a change in zoom. The X-ray diagnostic apparatus according to claim 1, wherein the control unit changes the display position of a figure showing the blood vessel wall so as to follow a change in zoom. The X-ray diagnostic apparatus according to claim 1, wherein the control unit changes the display state of the figure showing the blood vessel wall so as to follow the change of the FOV. The X-ray diagnostic apparatus according to claim 1, wherein the control unit changes the display position of the figure showing the blood vessel wall so as to follow the change of the FOV. The X-ray diagnostic apparatus according to any one of claims 1 to 5, wherein the operation of inputting the figure indicating the blood vessel wall is a hand-drawn operation. The X-ray diagnostic apparatus according to any one of claims 1 to 6, wherein the figure showing the blood vessel wall is composed of a line. A moving mechanism for moving the imaging unit and
An acquisition unit that acquires device position information of the imaging unit when an X-ray image is imaged based on an output from a position detecting means provided in a drive source of the moving mechanism.
With more
The X-ray diagnosis according to any one of claims 1 to 7, wherein the storage unit stores the device position information of the imaging unit acquired by the acquisition unit in association with a figure indicating the blood vessel wall. apparatus.