JP5426132B2 - X-ray diagnostic imaging equipment - Google Patents

Description

  The present invention relates to an X-ray image diagnostic apparatus, and in particular, reproduces and displays a reference still image (map image) on an image monitor.

  In the catheter procedure, a map image for advancing the catheter is used. For this map image, one frame is selected from an angiographic captured moving image or fluoroscopically collected moving image, and a still image is recorded (map image recording), and this map image is displayed on an image monitor.

  In order to advance the catheter, there are a plurality of imaging angles (X-ray tube support angle) determined to some extent in one examination, and a map image is recorded and displayed for each of these angles. It is like that.

  However, conventionally, in a busy procedure, the user manually selects a map image close to the current image from among a plurality of map images and displays it on the image monitor, which is troublesome.

  In addition, since the map image is created in a busy procedure, the map image may be forgotten. In such a case, a map image has to be created from the beginning, which is a heavy burden.

  The present invention has been made paying attention to the above circumstances, and the object of the present invention is to automatically display a matched map image when the current image matches the map image, and to create a map image. If the user has forgotten, an object of the present invention is to provide an X-ray diagnostic apparatus that facilitates the creation of a map image and assists the creation of the map image.

In order to solve the above-mentioned problems, an invention according to claim 1 is an X-ray imaging unit for imaging a subject with X-rays in an X-ray diagnostic imaging apparatus having a function of reproducing and displaying a reference still image on an image monitor. Variable means for changing the imaging angle of the X-ray imaging means, registration means for registering a plurality of desired imaging angles among the imaging angles changed by the variable means prior to imaging of the X-ray imaging means, A generating unit that generates an X-ray moving image of a blood vessel into which a contrast medium of a subject is injected at a plurality of registered angles registered by the registering unit, and a collection that collects the X-ray moving image generated by the generating unit Means, storage means for storing the registered angle for each X-ray moving image collected by the collecting means, and one frame from each of the plurality of X-ray moving images stored in the storing means. A selection means for selecting a reference still image, an operation means for adding the registered angle to the reference still image selected by the selection means and storing the registration angle in the storage means, and imaging by the X-ray imaging means Sometimes, it is determined whether or not the imaging angle is a registered angle registered in the registration means. If it is determined that the imaging angle is a registered angle, an X-ray moving image stored at the registered angle or a reference A message that searches for the presence or absence of a still image, displays it on the image monitor if a reference still image exists, and prompts the creation of a reference still image if no X-ray moving image or reference still image exists Control means for displaying on the image monitor.

According to a second aspect of the present invention, in an X-ray diagnostic imaging apparatus having a function of reproducing and displaying a reference still image on an image monitor, an X-ray imaging unit for imaging a subject with X-rays, and the X-ray imaging unit A variable means for changing the imaging angle, a registration means for registering a plurality of desired imaging angles among the imaging angles variable by the variable means prior to imaging by the X-ray imaging means, and a registration means registered by the registration means. A generating unit that generates an X-ray moving image of a blood vessel into which a contrast medium of a subject is injected at each of a plurality of registered angles, a collecting unit that collects an X-ray moving image generated by the generating unit, and a Storage means for storing the registered angle for each collected X-ray moving image, and a reference still image by selecting one frame from each of the plurality of X-ray moving images stored in the storing means. A selection means, an operation means for adding the registration angle to the reference still image selected by the selection means and storing the registration angle in the storage means, and the imaging angle at the time of imaging by the X-ray imaging means It is determined whether or not it is a registered angle registered in the means, and if it is determined that it is a registered angle, the presence or absence of a reference still image generated at the registered angle is searched, and a reference still image exists If the X-ray moving image exists, the X-ray moving image is automatically reproduced on the image monitor, and the reference still image is displayed. And a control means for displaying a message for prompting image recording on the image monitor.

According to a third aspect of the present invention, in an X-ray image diagnostic apparatus having a function of reproducing and displaying a reference still image on an image monitor, an X-ray imaging unit for imaging a subject with X-rays, and the X-ray imaging unit A variable means for changing the imaging angle, a registration means for registering a plurality of desired imaging angles among the imaging angles variable by the variable means prior to imaging by the X-ray imaging means, and a registration means registered by the registration means. Generating means for generating an X-ray moving image by injecting a blood vessel contrast medium into which a contrast medium of a subject is injected at each of a plurality of registration angles, and collecting means for collecting the X-ray moving image generated by the generating means A storage unit for storing the registration angle for each X-ray moving image collected by the collecting unit, and selecting one frame from each of the plurality of X-ray moving images stored in the storage unit. A selection unit for making a reference still image, an operation unit for adding the registered angle to the reference still image selected by the selection unit and storing the image in the storage unit, and at the time of imaging by the X-ray imaging unit It is determined whether or not the shooting angle is a registered angle registered in the registration unit. If it is determined that the shooting angle is a registered angle, the presence or absence of a reference still image generated at the registered angle is searched for and referenced. If there is a still image for display, the image is displayed on the image monitor, and there is no reference still image. However, if there is an X-ray moving image, a reference still image recording candidate is determined from the X-ray moving image. And a control means for automatically detecting a frame to be displayed on the image monitor as a candidate image for reference still image recording.

According to a fourth aspect of the present invention, in an X-ray image diagnostic apparatus having a function of reproducing and displaying a reference still image on an image monitor, an X-ray imaging unit for imaging a subject with X-rays, and the X-ray imaging unit A variable means for changing the imaging angle, a registration means for registering a plurality of desired imaging angles among the imaging angles variable by the variable means prior to imaging by the X-ray imaging means, and a registration means registered by the registration means. Generating means for generating an X-ray moving image by injecting a blood vessel contrast medium into which a contrast medium of a subject is injected at each of a plurality of registration angles, and collecting means for collecting the X-ray moving image generated by the generating means A storage unit for storing the registration angle for each X-ray moving image collected by the collecting unit, and selecting one frame from each of the plurality of X-ray moving images stored in the storage unit. A selection unit for making a reference still image, an operation unit for adding the registered angle to the reference still image selected by the selection unit and storing the image in the storage unit, and at the time of imaging by the X-ray imaging unit It is determined whether or not the shooting angle is a registered angle registered in the registration unit. If it is determined that the shooting angle is a registered angle, the presence or absence of a reference still image generated at the registered angle is searched for and referenced. If there is a still image for display, the image is displayed on the image monitor, and there is no reference still image. However, if there is an X-ray moving image, a reference still image recording candidate is determined from the X-ray moving image. And a control means for automatically detecting a frame and recording a reference still image.

  According to the present invention, it is always searched whether or not the current image matches the map image. If the current image matches, the map image is automatically displayed, so that the user's trouble can be saved.

  If you have forgotten to create a map image, you will be prompted to create a map image, automatically play back an X-ray moving image, or automatically detect a frame that is a candidate for map image recording from the X-ray moving image. Since it is displayed or automatically detected frames are recorded, the burden of creating a map image can be reduced.

  Hereinafter, embodiments of the present invention will be described in detail.

  FIG. 1 is a block diagram schematically showing a configuration of an X-ray diagnostic apparatus according to an embodiment of the present invention.

  In FIG. 1, reference numeral 1 denotes an X-ray tube as an X-ray imaging means, and this X-ray tube 1 is provided on the lower end side of a C-shaped supporter 11. An image intensifier 2 and a TV camera 3 are provided on the upper end side of the support 11 as generation means. The X-ray tube 1 and the image intensifier 2 are disposed to face each other with a top plate 13 interposed therebetween. The image intensifier 2 receives X-rays transmitted through the subject H on the top board 13 and converts them into light, and the TV camera 3 converts them into video signals.

  A high voltage generator 9 is connected to the X-ray tube 1, and an X-ray controller 10 is connected to the high voltage generator 9. A support device controller 12 as a variable means is connected to the support device 11, and the support device 11 is controlled to rotate in two directions orthogonal to each other by the support device controller 12. The imaging angle of the X-ray tube 1 is varied by the rotation of the support 11. The support controller 12 has a function of setting the rotation angle of the support 11 by an external input and a function of outputting the current rotation angle of the support 11 to the outside.

  A top panel controller 14 is provided on the lower surface of the top panel 13, and the current position of the top panel 13 in the vertical / longitudinal / lateral direction is externally output by the top panel controller 14.

  On the other hand, an A / D converter 4 for digitizing a video signal is connected to the TV camera 3. The A / D converter 4 is connected to a first image monitor 6 and an image memory 5 as an acquisition means. A second image monitor 8 is connected. The first image monitor 6 displays a digitized image as a still image or a moving image. The second image monitor 8 displays a digital image stored in an image disk 7 as storage means described later. It is displayed as a moving image / still image by a reproduction operation. An image disk 7 for storing an image digitized by the A / D converter 4 is connected to the image memory 5.

  The support controller 12 is connected to the image disk 7 via the interface 15 and the control bus 16 and the image memory 5, and the current rotation angle of the support 11, that is, the angle of the X-ray tube 1 can be stored in the image disk 7. It is like that. The top panel controller 14 is connected to the image disk 7 via the interface 17, the control bus 16 and the image memory 5 so that the current position of the top panel 13 can be stored in the image disk 7.

  Connected to the control bus 16 are a CPU 18 as control means, a data memory 19 as registration means, and a user device interface 20. A console 21 is connected to the user device interface 20.

  The console 21 is provided with a joystick 22 that transmits an operation signal to the support controller 12 of the support 11, and further stores the current position information of the support 11, that is, the current angle of the X-ray tube 1 in a data memory. An imaging angle registration SW 23 is provided for registration in the camera 19.

  In addition, the console 21 is provided with a seesaw SW 24 for switching and displaying the X-ray moving image stored in the image disk 7 on the second image monitor 8, and further displayed on the second image monitor 8. A jog shuttle 25 is provided as a selection means for selecting one frame of the X-ray moving image by changing the reproduction speed of the X-ray moving image or performing frame advance.

  Further, the console 21 is provided with a SW 26 for storing a map image as an operation means for storing one frame of the selected X-ray moving image as a map image on the image disk 7 together with a registration angle of the X-ray tube 1. A map image switching seesaw SW 27 for switching and displaying the map image stored in the image disk 7 on the second image monitor 8 is provided.

  In the above configuration, when the user performs an IVR procedure, prior to the IVR procedure, a plurality of angles of the X-ray tube 1 (an angle that requires a map image) suitable for advancing the catheter are registered in advance.

  That is, the joystick 22 of the console 21 is operated, the operation signal is transmitted to the support device controller 12 via the interface 15, and the support device 11 is rotated based on the transmitted operation signal. By repeating this operation a plurality of times and changing the rotational position of the supporter 11 to a desired position a plurality of times, the angle of the X-ray tube 1 is changed a plurality of times to a desired angle (an angle that requires a map image). Thus, every time the angle of the X-ray tube 1 is varied a plurality of times, the angle registration SW 23 is pressed. Thereby, a plurality of desired angles of the X-ray tube 1 are registered in the data memory 19 (the angles registered in the data memory 19 are hereinafter referred to as registered angles).

  After setting a plurality of registered angles of the X-ray tube 1 in this way, a map image corresponding to the registered angles is created. That is, the user operates the joystick 22 again to set the angle of the X-ray tube 1 a plurality of times again so as to be the above-mentioned registered angle, and injects a contrast medium for each of these settings, A linear motion image is generated and collected in the image memory 5. Then, the plurality of angiographic images collected at the plurality of registered angles are stored in the image disk 7 together with the registered angles. Thereafter, the user operates the seesaw SW 24 to switch and display the X-ray moving image stored in the image disc 7 on the second monitor 8. After this display, the jog shuttle 25 is operated to select one frame from the X-ray moving image, and after this selection, the map image recording SW 26 is operated. As a result, the selected one frame is recorded on the image disk 7 together with the registration angle as a reference image (map image).

  After recording the reference image (map image) in this way, the user performs fluoroscopy. That is, the IVR procedure is advanced while operating the joystick 22 and setting a shooting angle at which the procedure is easy to perform while viewing a perspective image on the first image monitor 6.

  At this time, the CPU 18 always checks whether or not the current shooting angle matches the registered angle registered in the data memory 19. If the current imaging angle and the registered angle in the data memory 19 coincide with each other, it is searched whether or not a map image or an X-ray moving image attached with the registered angle exists on the image disc 7. The As a result of this search, if there is a map image or X-ray moving image, it is displayed on the second image monitor 8, and if it does not exist, a message prompting the creation of a map image is displayed on the second monitor 8. Will be.

  As described above, according to this embodiment, it is always checked whether or not the current shooting angle matches the registered angle registered in the data memory 19, and the current shooting angle and the registered angle are determined. If they match, the map image corresponding to the current angle is automatically displayed on the second image monitor 8, so that the operation is remarkably performed as compared with the case where the map image is manually extracted as in the prior art. It becomes easy.

  In addition, even if the current shooting angle matches the registered angle, if there is no map image or X-ray moving image corresponding to the registered angle, a map image is displayed to prompt creation of the map image. The burden of creation can also be reduced.

  The present invention is not limited to the above-described embodiment, but may be as follows.

  That is, when the current imaging angle and the registered angle registered in the data memory 19 coincide with each other, the map image or the X-ray moving image attached with the registered angle as described above is stored in the image disc 7. It is searched whether or not it exists. However, at this time, there is no map image corresponding to the current angle, but there may be an X-ray moving image. In this case, the X-ray moving image may be automatically reproduced on the second monitor 8 and a message for prompting the recording of the map image may be displayed on the second monitor 8.

  Further, after the X-ray moving image is automatically reproduced on the second image monitor 8, a frame as a map image recording candidate is automatically detected from the X-ray moving image, and this is used as a map image recording candidate image. You may make it display on the 2nd monitor 8 automatically.

  Alternatively, after automatically detecting a frame as a map image recording candidate, the frame may be automatically recorded on the image disk 7 as a map image.

  In addition, as a method for automatically detecting a frame that is a candidate for map image recording, for example, a method of investigating a pixel value to detect an image that is most filled with a contrast agent, or a predetermined time from the start of injection of a contrast agent There is a method of detecting a later frame.

  According to these embodiments, it is possible to further reduce the burden of creating a map image.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

1 is a schematic configuration diagram showing an X-ray diagnostic apparatus according to an embodiment of the present invention.

Explanation of symbols

  H ... subject, 1 ... X-ray tube (X-ray imaging means), 2 ... image intensifier (generation means), 3 ... TV camera (generation means), 5 ... image memory (collection means), 7 ... image disc (Storage means), 8 ... image monitor, 12 ... support controller (variable means), 18 ... CPU (control means), 19 ... data memory (registration means), 25 ... juggle shuttle (selection means), 26 ... map SW for storing images (operation means).

Claims (5)

In an X-ray diagnostic imaging apparatus having a function of reproducing and displaying a reference still image on an image monitor,
X-ray imaging means for imaging a subject with X-rays;
Variable means for changing the imaging angle of the X-ray imaging means;
Registration means for registering a plurality of desired imaging angles among imaging angles varied by the variable means prior to imaging by the X-ray imaging means;
Generating means for generating an X-ray moving image of a blood vessel into which a contrast medium of a subject is injected at each of a plurality of registration angles registered by the registration means;
Collecting means for collecting the X-ray moving image generated by the generating means;
Storage means for accumulating and storing the registration angle for each X-ray moving image collected by the collection means;
Selection means for selecting one frame from each of the plurality of X-ray moving images stored in the storage means to be a reference still image;
Operation means for attaching each of the registered angles to the reference still image selected by the selection means and storing it in the storage means;
When imaging by the X-ray imaging unit, it is determined whether or not the imaging angle is a registered angle registered in the registration unit. If it is determined that the imaging angle is a registered angle, the X stored at the registered angle is determined. Search for presence or absence of linear moving image or reference still image. If there is a reference still image, display it on the image monitor. If there is no X-ray moving image or reference still image, use it as a reference. An X-ray diagnostic imaging apparatus comprising: control means for displaying a message for prompting creation of a still image on the image monitor. In an X-ray diagnostic imaging apparatus having a function of reproducing and displaying a reference still image on an image monitor,
X-ray imaging means for imaging a subject with X-rays;
Variable means for changing the imaging angle of the X-ray imaging means;
Registration means for registering a plurality of desired imaging angles among imaging angles varied by the variable means prior to imaging by the X-ray imaging means;
Generating means for generating an X-ray moving image of a blood vessel into which a contrast medium of a subject is injected at each of a plurality of registration angles registered by the registration means;
Collecting means for collecting the X-ray moving image generated by the generating means;
Storage means for accumulating and storing the registration angle for each X-ray moving image collected by the collection means;
Selection means for selecting one frame from each of the plurality of X-ray moving images stored in the storage means to be a reference still image;
Operation means for attaching each of the registered angles to the reference still image selected by the selection means and storing it in the storage means;
At the time of imaging by the X-ray imaging unit, it is determined whether or not the imaging angle is a registered angle registered in the registration unit. If it is determined that the imaging angle is a registered angle, a reference generated at the registered angle is determined. The presence or absence of a reference still image is searched for and displayed on the image monitor if there is a reference still image. If there is no reference still image but an X-ray moving image exists, the X-ray movie is displayed. An X-ray diagnostic imaging apparatus comprising: control means for automatically reproducing an image on the image monitor and further displaying on the image monitor a message prompting recording of a reference still image. In an X-ray diagnostic imaging apparatus having a function of reproducing and displaying a reference still image on an image monitor,
X-ray imaging means for imaging a subject with X-rays;
Variable means for changing the imaging angle of the X-ray imaging means;
Registration means for registering a plurality of desired imaging angles among imaging angles varied by the variable means prior to imaging by the X-ray imaging means;
Generating means for generating an X-ray moving image of a blood vessel into which a contrast medium of a subject is injected at each of a plurality of registration angles registered by the registration means;
Collecting means for collecting the X-ray moving image generated by the generating means;
Storage means for accumulating and storing the registration angle for each X-ray moving image collected by the collection means;
Selection means for selecting one frame from each of the plurality of X-ray moving images stored in the storage means to be a reference still image;
Operation means for attaching each of the registered angles to the reference still image selected by the selection means and storing it in the storage means;
At the time of imaging by the X-ray imaging unit, it is determined whether or not the imaging angle is a registered angle registered in the registration unit. If it is determined that the imaging angle is a registered angle, a reference generated at the registered angle is determined. The presence or absence of a reference still image is searched for and displayed on the image monitor if there is a reference still image. If there is no reference still image but an X-ray moving image exists, the X-ray movie is displayed. An X-ray diagnostic imaging apparatus comprising: control means for automatically detecting a frame as a reference still image recording candidate from an image and automatically displaying the frame as a reference still image recording candidate image on the image monitor. In an X-ray diagnostic imaging apparatus having a function of reproducing and displaying a reference still image on an image monitor,
X-ray imaging means for imaging a subject with X-rays;
Variable means for changing the imaging angle of the X-ray imaging means;
Registration means for registering a plurality of desired imaging angles among imaging angles varied by the variable means prior to imaging by the X-ray imaging means;
Generating means for generating an X-ray moving image of a blood vessel into which a contrast medium of a subject is injected at each of a plurality of registration angles registered by the registration means;
Collecting means for collecting the X-ray moving image generated by the generating means;
Storage means for accumulating and storing the registration angle for each X-ray moving image collected by the collection means;
Selection means for selecting one frame from each of the plurality of X-ray moving images stored in the storage means to be a reference still image;
Operation means for attaching each of the registered angles to the reference still image selected by the selection means and storing it in the storage means;
At the time of imaging by the X-ray imaging unit, it is determined whether or not the imaging angle is a registered angle registered in the registration unit. If it is determined that the imaging angle is a registered angle, a reference generated at the registered angle is determined. The presence or absence of a reference still image is searched for and displayed on the image monitor if there is a reference still image. If there is no reference still image but an X-ray moving image exists, the X-ray movie is displayed. An X-ray diagnostic imaging apparatus comprising: control means for automatically detecting a frame as a reference still image recording candidate from an image and automatically recording a reference still image.   In the case of automatically detecting an image that is a candidate for recording the reference still image from the X-ray moving image, the pixel value is examined to detect the most filled image of the contrast agent, or from the start of injection of the contrast agent The X-ray image diagnostic apparatus according to claim 3 or 4, wherein a frame after a certain time is detected.

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