JPH0439113B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a medical image diagnostic apparatus, and more particularly to an improvement in an apparatus for displaying a plurality of two-dimensional images on the same screen.

(Prior Art) Medical image diagnostic equipment such as CT (Computer Tomography) captures two-dimensional images of many adjacent slice planes from the same subject, and then displays these multiple images on the same screen. May be observed. In that case, since there is no display between each image of an axis common to the slices or a passing point of a straight line set in three-dimensional space that commonly passes through each image, such an axis or straight line is There was a problem in that it was not possible to fully understand how the images passed through the images or the mutual positional relationship between the images.

The present invention has been made in view of the above problems, and
The purpose is to display multiple images of many slices on the same screen, by specifying two points in three-dimensional space and setting a straight line that commonly passes through each slice. An object of the present invention is to provide a medical image diagnostic device that displays passing points of a straight line.

(Means for Solving the Problems) The present invention, which solves the above-mentioned problems, provides an image that can reduce images of a plurality of slice planes of an object in a three-dimensional space and synthesize them on the same screen for display. In a display device, a setting device for setting a starting point and an ending point and inputting information for setting a virtual straight line in the object, a passing position calculation device for calculating a passing point of this straight line in the image, and a passing point that is found. The present invention is characterized by comprising a control device that overwrites and displays a mark indicating each image on each image.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of a main part of a medical image diagnostic apparatus according to the present invention. In the figure, reference numeral 1 denotes an image storage device that can store a plurality of captured image data. The apparatus of the present invention may be a part of a CT apparatus, for example, and in that case, the image data provided is two-dimensional image data of each slice plane arranged three-dimensionally. Reference numeral 2 denotes an image reduction device that reduces the image provided from the image storage device 1 to an image of an arbitrary size (reduces the image to a predetermined size in order to display a plurality of images on the same display screen). 3 is an image composition device for arranging a plurality of reduced images on the same screen. 4 is a display device that displays the created composite image. 5 is a setting device that can set two points at arbitrary positions in each of two arbitrary images, and 6 is a passing point (position) in each image of a straight line connecting the two set points.
This is a passing position calculation device that can calculate the following.
Reference numeral 7 denotes a control device that appropriately controls each of the above devices. Note that under the control of the control device 7, the display device 4 can display not only a plurality of images (composite images) but also comments such as appropriate figures and characters.

The operation in such a configuration will be explained below with reference to FIG.

(1) When a command to display multiple images on the same screen is given, the setting device 5 enables image selection. As shown in FIG. 2B, a three-dimensional object 10
A large number of slice planes 11 are selected. Two-dimensional images #1 to #n of each slice plane are already stored in the image storage device 1.

(2) The selected images are taken into the image reduction device 2 one by one and reduced to a predetermined magnification.

(3) Every time a reduced image is created, it is stored in the image synthesis device 3, and after all image reduction processing is completed, the images are synthesized so as to be arranged on one screen.

(4) Display the composite image on the same screen on the display device 4 (FIG. 2C).

(5) Using the setting device 5, determine a straight line passing through the desired position within the subject. The linear position is determined by specifying two arbitrary points within the subject.

(6) The passing point calculation device 6 calculates the passing point in each image (in the reduced image). The coordinates of the passing point (coordinates on the same screen) are sent to the control device 7.

(7) The control device 7 overwrites the displayed images and displays the passing points of each image, for example, with + marks, as shown in FIG. 2D.

(8) If the processing related to the passing point has not been completed, execute again from (5) above.

By the above procedure, it is possible to obtain a clear display of the passing position of the straight line.

Note that the number of straight lines is not limited to one, but may be multiple. In the case of multiple lines, it is desirable that the passing point marks be different marks that can be identified in relation to each straight line.

Further, the present invention is not limited to medical image diagnostic apparatuses, but is applicable to all image data processing apparatuses having three-dimensional spatial coordinate information. Furthermore, display devices are not limited to CRT display devices, but also color
Graphic display devices such as CRT, liquid crystal display, plasma display, etc. can be used.

(Effects of the Invention) As described above, the present invention has the following effects. That is, in the medical diagnostic apparatus, it is possible to easily grasp the relationship of the passing positions of straight lines with respect to each image of the composite image. In addition, it is important to accurately know the location of the affected area in the living body, and various methods have been attempted to contact the affected area as a medical procedure, such as biopsy, drug injection tube, fiberscope. etc., but
In this case, by displaying the passing point to the target tissue with a straight line, it can be used as a guide for the insertion tube,
It becomes possible to perform more accurate treatment techniques.

In particular, according to the present invention, since the operator can arbitrarily set a certain passing point at a plurality of locations, there is an advantage that an easier and more accurate treatment technique can be established.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of the main parts of a medical image diagnostic apparatus according to the present invention, and FIG. 2 is an explanatory diagram for explaining the operation. 1... Image storage device, 2... Image reduction device, 3
. . . image synthesis device, 4 . . . display device, 5 . . . setting device, 6 .

Claims (1)

[Claims] 1. In an image display device that can reduce images of multiple slice planes of an object in three-dimensional space and display them on the same screen, a starting point and an ending point are set, and a virtual straight line is set in the object. The present invention is equipped with a setting device for inputting information, a passing position calculation device for determining the passing point of this straight line in each image, and a control device for overwriting and displaying a mark indicating the found passing point on each image. Characteristic image display device.