JPH0267686A - Image diagnosing device - Google Patents

Abstract

PURPOSE:To quickly display a necessary image out of plural recorded images by dividedly displaying plural images recorded in a memory and displaying a switch number corresponding to the image simultaneously with the display of the image. CONSTITUTION:Image data photographed by a TV camera 1 are processed by an image processing unit 3 through an A/D converter 2, recorded in a frame memory (1) 4 and displayed on a TV monitor 9 through a multiplexer 7 and a D/A converter 8. A necessary image is selected from the displayed images, a button with a switch number corresponding to a switch is depressed to register the image in a frame memory (2) 10 and the image is displayed by depressing the button.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to DSA (digital subtraction
The present invention relates to an image diagnostic apparatus suitable for PTCA (percutaneous coronary angioplasty).

[Conventional technology]

In recent years, cardiovascular examinations have come to be performed using DSA devices. By using DSA, it is possible to view the photographed image immediately after photographing, and through image processing, it is possible to enhance edges and determine the stenosis rate. On the other hand, PTCA, in which a balloon catheter is inserted into a narrowed part of a cardiovascular blood vessel and expanded to cure the narrowed part, has been performed in recent years.

To do this, an X-ray image of the stenosis is taken before PTCA, and the balloon catheter is advanced to the stenosis while viewing the image. Therefore, it is necessary to display the captured image immediately after shooting, and it is necessary to take X-rays again to confirm the effect after PTCA and compare it with the image before PTCA. It is necessary to quickly display images of various types as needed. FIG. 2 shows a block diagram of a conventional DSA device. The X-ray image taken by the television camera 1 is digitized by the A/D converter 2, processed by the image processing unit 3, and recorded in the frame memory (1) 4.
The A converter 8 converts the signal into analog and displays it on the television monitor 9. In order to immediately display the previously captured image during PTCA, a frame memory (2) 10 is provided independently of frame memory (1) 4, and a memory controller 11
An arbitrary image is selected and displayed by switching the multiplexer 7.

After photographing, an arbitrary image is selected and input into the frame memory (2) 10. Magnetic disk 5 as an image recording device
Although there is an optical disk 6, it cannot be used as a substitute for the memory (2) 10 because it requires data transfer time. When shooting, PT
Look at the images recorded in frame memory (1) 4 when shooting before CA, select the necessary image, select the switch corresponding to each frame memory (2) 10, and record it in that memory. When viewing an image recorded after PTCA during PTCA, pressing the switch immediately displays the image.

[Problem to be solved by the invention]

The above conventional technology does not take into account the image selection speed when the number of recorded images increases, and it becomes difficult to remember which image is in which button, making it impossible to quickly display the required image. There was a problem with it disappearing.

An object of the present invention is to quickly display a necessary image from among a plurality of recorded images.

[Means to solve the problem]

The above purpose is to divide the images recorded in multiple memories and display them on the screen, and at the same time display the button numbers corresponding to the divided images.
By pressing the button for the desired image, it is possible to quickly display it.

[Effect]

By providing a display memory, compressing multiple images, displaying them separately, numbering the images at the same time, making the numbers correspond to the switch numbers, and displaying the switch numbers at the same time as the images, you can You can quickly select images.

〔Example〕

An embodiment of the present invention will be explained with reference to FIG. FIG. 1 is a block diagram showing one embodiment of the present invention.

This is a diagram in which a display memory 12 is added to FIG. 2.

The image data taken by the TV camera 1 is transferred to the A/D converter 2.
The image is digitized by the image processing unit 3, and processed by the image processing unit 3.
Frame memory (1) At the same time as recording in 4, the data is converted into analog data by a D/A converter via a multiplexer 7 and displayed on a television monitor 9. Captured frame memory (1
) Select the required image from the images recorded in step 4, and
The button 13 of the switch 15 as shown in the figure is pressed to register the image. For example, press the button A to display the image showing the minutes.
Press 13 to register, and record the registered image data in frame memory (2) 10.

After recording Otori 4, press button A13 to display the image. A multi-button 14 is installed in this switch 15, and when this button is pressed, all the images A to ■ are displayed together with the numbers. A display example is shown in FIG. By looking at this image, you can quickly find the image you need. Display memory 12 is used to perform this processing. The display memory 12 has a recording capacity for one image, and in the case of this embodiment, it can record the image divided into nine parts. It is necessary to reduce the image data in frame memory (2) 10 to 1/9.

FIGS. 5 and 6 are diagrams for explaining a method of reducing image data to 1/9. FIG. 5 shows a method of using the data of one pixel out of nine pixels using the memory controller 11.

FIG. 6 shows a method of creating one pixel data by averaging data of nine pixels. In this way, the image data is reduced to 1/9 and recorded in the display memory 12.

In this embodiment, the number of divisions is nine, but as long as there is a plurality, any number of doses may be used, and the number of divisions may be switched depending on whether the number of registered sheets is small or large.

In this embodiment, it is divided into frame memory (1) 4 and frame memory (2) 10, but a series of memory spaces may be divided and used, and the memory other than PTCA may be switched as a normal frame memory.

Further, in this embodiment, although the frame memory (1) 4 is registered in the frame memory (2) 10, past data may be registered from the magnetic disk 5 or the optical disk 6.

〔Effect of the invention〕

According to the present invention, during PTCA, the image of the blood vessel that was previously seen, that is, the image of the part to be expanded can be displayed at the same time, so the balloon catheter can be easily advanced in the blood vessel, and the switch can be By displaying the number corresponding to the image at the same time as the image, the desired image can be quickly selected and displayed.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a block diagram showing a conventional system, and FIG. 3 is a front view of a switch for registering arbitrary images and selecting display.
FIG. 4 is a diagram showing a 9-image multi-display image in this embodiment, and FIGS. 5 and 6 are diagrams showing a method of converting image data to 1/9. 1...TV camera, 2...A/D converter, 3...
・Image processing unit, 4...frame memory (1),
5... Magnetic disk, 6... Optical disk, 7...
Multiplexer, 8...D/A converter, 9...TV monitor, 10...frame memory (2), 11...
・Memory controller, 12... Display memory, 13... Button, 14... Multi button, 15.
··switch. Early Old Funeral Order No.■ No.

Claims (1)

[Claims] 1. Television camera and A for digitizing video signals
In an image diagnostic apparatus comprising a /D converter, an image processing unit, a frame memory for recording image data, a D/A converter, and a television monitor for displaying images,
Image data for N images recorded in the frame memory (N
is an integer), the display memory is provided with a display memory for compressing and storing 1/N of N
An image diagnostic apparatus characterized in that image data for images can be simultaneously displayed on the television monitor as N images. 2. Number the N images, display the number along with the image when displaying the N images, provide a switch corresponding to the number, and select any image by selecting the switch. An image diagnostic apparatus according to claim 1, characterized in that the image diagnostic apparatus can perform the following functions.