JP2531229B2 - X-ray TV digital device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is used in the field of fluoroscopy.

The present invention relates to an X-ray TV digital apparatus, and more particularly to a V-ray TV digital apparatus applied to blood vessel treatment and provided with a recording device, and more particularly to improvement of image display thereof.

[Prior Art] Conventionally, in the process of advancing a catheter to a target site in the body of a patient, a contrast agent injection image is first recorded by a VDR (video disc recorder) or VTR (video tape recorder), and one of the recorded images is recorded. The frame is reproduced and displayed as a reference image (blood vessel map) on the dedicated monitor.

[Problems to be Solved by the Invention] When targeting a cardiovascular system such as a coronary artery dilatation, the movement cannot be grasped from the reference image of one frame, and the catheter operation is inconvenient.

In addition, since there is a dedicated monitor for each of the fluoroscopic image displayed in real time and the reconstructed reference image, the operator must compare these two monitors while advancing the catheter. There is an annoyance that cannot be watched.

An object of the present invention is to facilitate dynamic grasping of a cardiovascular map by using a plurality of reconstructed images, and to observe a fluoroscopic image and a reference image at the same time by one monitor so that a catheter can be easily operated. It is to provide an X-ray TV digital device as described above.

[Means for Solving the Problems] The above-mentioned object is, in an X-ray TV digital X-ray device provided with a recording device, a first frame memory for displaying an X-ray fluoroscopic image in real time, and reproduction of the recording device. A second frame memory having a fixed time capacity for an image;
An image reduction processing unit connected to the second frame memory, a combination processing unit of a real-time perspective image and a reproduction reduced image,
And a display for displaying the composite image.

[Operation] X with a semiconductor memory that stores TV images for a certain period
In a X-ray TV digital X-ray apparatus, a plurality of recorded and reproduced contrast agent injection images are stored in the memory, images of a specified period of the recorded images are repeatedly reproduced and reduced, and the reproduced images are displayed in real time. It is displayed on a part of the transparent image screen.

[Embodiment] A preferred embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of a main part configuration showing the first embodiment.
2 and 3 are exemplary screen displays according to the present invention.

In the drawing, 10 is an image intensifier (II) for converting a fluoroscopic image into a visible image, 12 is a TV camera head, 14 is its control unit or CCU, 16
Is an A / D converter, 18 is a frame memory for displaying in real time (real time), 20 is a frame memory for a composite image, 22 is a D / A converter, and 24 is a monitor. These are X for real time display. Configure a line TV digital device.

Next, 30 is a recording device, 38 is a plurality of frame memories,
Reference numeral 32 is a thinning interpolation circuit (image reduction processing unit), 34 is a buffer memory, and 36 is an image selector. Reference numeral 36 is an address control circuit for a processing unit that requires address specification.

As shown in the illustrated example, when the X-ray imaging signal that has passed through the II (luminance multiplier tube) 10, the camera head 12, and the CCU (camera control) 14 is recorded in the recording device (VTR or VDR) 30,
Simultaneously A / D converted, frame memory 18, pixel selector 3
6. Through the frame memory 20 and the D / A converter 22, it is displayed on the monitor 24 in real time as a perspective image.

On the other hand, as the reference image, the contrast image injection image recorded in the recording device 30 is immediately reproduced, the switch SW is switched to perform A / D conversion, and the reference image is stored in the frame memory 38 having a capacity for a fixed time.

When the display according to the present invention is performed, the perspective image is read from the frame memory 18, the reference image is simultaneously read from the frame memory 38, and the perspective image is directly input to the pixel selector 36, while the reference image is thinned out. After the image reduction operation is performed by the interpolation circuit 32 at an appropriate magnification and the image is stored in the buffer memory 34, address control is performed so that the image is displayed at a predetermined position (corner as shown in FIGS. 2 and 3). It is read out while being received and is input to the image selector 36.

The pixel selector 36 selects a perspective image and a reference image for each pixel. The selected composite image is passed through the frame memory 20 and D /
A converted and displayed on the monitor 24. Frame memory 38
The image is repeatedly reproduced continuously and repeatedly displayed at an appropriate position on the monitor 24.

In this way, the moving image reference image is displayed on the same screen as the real-time perspective image, and the blood vessel map is easily grasped.

The display position of the reference image is preferably at any of the four corners of the screen, but it is desirable to provide a display position selection function so that the reference image does not overlap the blood vessel running of the fluoroscopic image due to the right coronary artery, the left coronary artery, the fluoroscopic direction, or the like.

FIG. 2 shows each display example in the case of the right oblique of the right coronary artery, and FIG. 3 shows each display example in the case of the right oblique of the left coronary artery.

In addition, it is preferable to store one heartbeat of the contrast agent injection image in the frame memory 38.

Regarding screen usage, use a foot switch
The ON period is displayed as in the embodiment shown above, and when the foot switch is OFF, the reference image is displayed in full screen in synchronism with this, so that the perspective image display (foot switch O
N) If the reference image can be sufficiently observed before, the catheter operation becomes easier.

[Effect] According to the present invention, the recorded image can be used to dynamically grasp the blood vessel map, and since the perspective image and the reference image are displayed on the same screen, attention is focused on one screen to facilitate catheter operation. become.

[Brief description of drawings]

FIG. 1 is a block diagram showing the essential parts of an embodiment of the present invention, and FIGS. 2 and 3 are exemplary screen displays according to the present invention. 18 is a one-frame memory, 30 is a recording device, and 2 is thinning /
An interpolation circuit, 36 is a pixel selector, and 38 is a memory for a plurality of frames.

Claims (1)

(57) [Claims] 1. An X-ray TV digital X-ray device provided with a recording device, comprising: a first frame memory for displaying an X-ray fluoroscopic image in real time, and a capacity for a fixed time for a reproduced image of the recording device. A two-frame memory, an image reduction processing unit connected to the second frame memory, a combination processing unit of a real-time perspective image and a reproduction reduced image, and a display for displaying the combined image. Characteristic X-ray TV digital device.