JPH0749570Y2 - Image display device for medical diagnostic imaging device - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to a medical image diagnostic apparatus such as an X-ray CT apparatus, an ECT (emission computer tomography) apparatus or an MRI (imaging using nuclear magnetic resonance) apparatus, and more particularly to an image display apparatus thereof.

[Prior art]

A medical image diagnostic apparatus such as an X-ray CT apparatus not only collects image data of a large number of adjacent sections and displays an image of each section, but also collects the above-mentioned data along a predetermined section. Items are collected and arranged to create a new image. That is, if the transverse image data of a large number of adjacent cross sections is collected, it means that three-dimensional data is collected.
From those data, if you extract and arrange those along any cross section, coronal, sagittal, oblique,
You can create images such as double oblique.

[Problems to be solved by the device]

However, conventionally, when an arbitrary sectional image is created,
Since it is simply displayed, there is a problem that it is not easy to grasp the positional relationship. The difficulty increases especially when the newly created image is along a complicated cross section. It is an object of the present invention to provide an image display device for a medical image diagnostic device, which is improved so as to easily objectively grasp the positional relationship in a newly created arbitrary sectional image.

[Means for Solving the Problems]

In order to achieve the above object, in the image display device of the medical image diagnostic apparatus according to the present invention, data storage means for storing three-dimensional image data composed of two-dimensional image data regarding a large number of adjacent cross sections. And three-dimensional data stored in the above-mentioned data storage means, which data is stored in the above-mentioned data storage means by reading image data for one cross-section from the data storage means and displaying data at an arbitrary cross-section set on the displayed reference image. By extracting from various image data,
Means for creating a new image representing the set cross section, image display means for displaying the created image together with the reference image on one screen, and one of both the reference image and the created image. The mark position control means for arbitrarily moving the mark that is displayed and represents the position on the image, and the position on the other image corresponding to the mark position on the one image are set between the two images. When the mark displayed on one image moves in response to the operation of the mark position control means by displaying the other mark at the calculated position on the other image based on the positional correspondence relationship. It is characterized in that it is provided with a means for simultaneously moving other marks on the other image.

[Action]

Image data for one cross section is read out from the data storage means and displayed as a reference image. Then, the position / shape of an arbitrary cross section is set on this reference image. Then, the data located in the cross section is extracted from the three-dimensional image data stored in the data storage means, and a new image representing the cross section is created. This created image, along with the reference image,
It is displayed on one screen of the display means. Since a new image is created in this way, the data regarding the positional relationship between the created image and the reference image is already held at this time (when an arbitrary cross section is set, The positional relationship of each position on the arbitrary cross section to which position on the three-dimensional image data corresponds is obtained, and because the data regarding this positional relationship is used, the data to be positioned at each position of the cross section can be extracted. it can). Therefore, the reference image and the created image are displayed on one screen of the image display means, and a mark (cursor) is displayed on one of the images.
Is displayed and the position on the image is designated, it is possible to calculate which position on the other image the position corresponds to, based on the above-mentioned data regarding the positional relationship between the two images which is held in advance. As a result, it is possible to display a mark at a position on the other image corresponding to the mark position on one image and move the other mark at the same time while maintaining the correspondence of the positional relationship when moving the one mark. . In this way, the position on one image corresponds to the position on the other image is indicated by the marks on both images, and since they move at the same time, the position at consecutive multiple points It is possible to easily understand the relationship objectively.

【Example】

Next, an embodiment of the present invention will be described with reference to the drawings. In FIG. 1, it is assumed that the image data storage memory 1 stores data of transverse images regarding a large number of adjacent cross sections using, for example, an X-ray CT apparatus. Part 1 by the input device 4 such as a keyboard device
When one of the transverse images is selected, it is transferred as a reference image 8 to the image storage memory 3 via the CPU 2 and displayed on the screen of the CRT device 6 via the graphic display device 5. A curve 11 is set on the displayed reference image 8. For setting the curve 11, the input device 4 and the cursor position control device 7 such as a mouse or a trackball are used. This curve 11 represents a cross section, and in this example, it is a curve connecting the eyes of the human head. The CPU 2 extracts the data at the position corresponding to the curve 11 from the transverse image extracted as the reference image 8 stored in the image data storage memory 1 and a large number of transverse images adjacent thereto, and arranges them. Create an image of the cross section along curve 11. The created image 9 of the new cross section is transferred to the image storage memory 3, and passes through the graphic display device 5.
It is displayed on the screen of the CRT device 6. Here, it is assumed that the screen of the CRT device 6 is divided, for example, as shown in FIG. 2, and the reference image 8 and the created image 9 are displayed at the same time. At this time, the starting point of curve 11 showing the cross section
21 is displayed on the reference image 8 and the corresponding starting point 22 is also displayed on the created image 9. These are displayed as appropriate images such as round small dots. The reference image 8 is a transverse image and is located on the dotted line 12 in the created image 9 (this dotted line 12 is not displayed on the screen in this example). The cursor position control device 7 is operated to move the cursor 31 onto the curve 11 of the reference image 8.
When the cursor is placed, the cursor 32 appears also on the created image 9. This is because the CPU 2 calculates the position on the created image 9 corresponding to the position of the cursor 31 based on the positional relationship when the new image 9 is created from the curve 11 on the reference image 8 and moves the cursor to that position. This is because 32 is displayed. When the cursor 31 is moved onto the curve 11 by operating the cursor position control device 7, the CPU 2 calculates the corresponding position on the created image 9 each time and displays the cursor 32 at that position. When the cursor 31 moves on 11, the cursor 32 moves linearly on the created image 9 in accordance with the movement (moves on the straight line corresponding to the dotted line 12 which does not appear on the screen).
It will be. In this way, the two moving points 31 and 32 move at the same time, which makes it easy to objectively grasp the correspondence between the position of the reference image 8 on the curve 11 and the position of the created image 9. Since it is important to capture the correspondence between the position of the reference image 8 on the curve 11 and the position of the created image 9, the movement of the cursor 31 in the reference image 8 is limited to the curve 11, and the created image 9 However, since the movement of the cursor 32 is limited to the dotted line 12, for example, when one button provided on the mouse is pressed, the cursors 31 and 32 move simultaneously in the directions away from the starting points 21 and 22, and when the other button is pressed, the starting point It can also be configured to move back to 21, 22. Further, although the case where one created image is obtained from the reference image has been described above, it is applicable to a case where a created image is used as a reference image and a curve defining a cross section is set to create a new sectional image along the curve. The more effective it is. That is, in this case, it is more difficult to grasp the positional relationship between the plurality of created images, but the reference image and the plurality of created images are displayed at the same time, and the cursor is displayed at the corresponding position of each image. If the two are moved simultaneously, the objective positional relationship between the created images can be easily known.

[Effect of device]

According to the image display device of the medical image diagnostic apparatus of the present invention, the reference image and the created image are displayed on one screen of the image display means, and the cursor is displayed on each of those images to display those images. The position displayed on each of these is indicated, and the positions indicated by these cursors always correspond to each other, and if one is moved, the other moves simultaneously following it, so the reference displayed on this one screen By observing the image and the created image together with the movement of the cursors, the observer can easily understand the positional relationship between both images objectively.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a diagram showing an example of a display screen. 1 ... Image data storage memory, 2 ... CPU, 3 ... Image storage memory, 4 ... Input device, 5 ... Graphic display device, 6 ... CRT device, 7 ... Cursor position control device,
8 ... Reference image, 9 ... Created image, 11 ... Curve defining the cross section, 21, 22 ... Starting point, 31, 32 ... Moving point.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location G01N 23/04 G01T 1/161 Z 9014-2G

Claims (1)

[Scope of utility model registration request] 1. A data storage means for storing three-dimensional image data consisting of two-dimensional image data on a number of adjacent cross sections, and image data for one cross section read from the data storage means. A new image representing the set cross section is obtained by extracting the data located in the arbitrary cross section set on the displayed and displayed reference image from the three-dimensional image data stored in the data storage means. And an image display means for displaying the created image together with the reference image on one screen, and an image display means for displaying on one of the reference image and the created image. The mark position control means for arbitrarily moving the mark indicating the position and the position on the other image corresponding to the mark position on the one image are set to correspond to each other between the two images. On the other image when the mark displayed on one image moves in response to the operation of the mark position control means by displaying another mark at the calculated position on the other image. An image display device of a medical image diagnostic device, characterized in that it further comprises means for moving other marks at the same time.