JPH01218432A - X-ray tv digital device - Google Patents

Abstract

PURPOSE:To facilitate a catheter operation by storing plural contrast medium injection image to be store-reproduced into a memory, repeatedly successive- reproduce-reading the image in a designated period among the recorded images, and displaying it on one part of a perspective image screen to be displayed in a real time. CONSTITUTION:The perspective image is read from a frame memory 18, a referring image is simultaneously read from a frame memory 38, and the perspective image is inputted to a picture element selector 36 as it is. On the other hand, the referring image is image-reduction-operated at a proper magnification by an interpolating circuit 32, stored into a buffer memory 34, thereafter, read in being address-controlled so as to be displayed in a prescribed position on the screen, and inputted to the image selector 36. The picture element selector 36 selects the perspective image and referring image for each picture element. A synthetic image to be selected is D/A-converted through a frame memory 20 and displayed on a monitor 24. The image of the frame memory 38 is repeatedly successive-reproduced and repeatedly displayed in the proper position of the monitor 24.

Description

[Detailed description of the invention] [Industrial application field] The invention is utilized in the field of X&II fluoroscopy.

The present invention relates to an X1Jlt TV digital device,
The present invention relates to an X-ray TV digital device applied to vascular treatment and equipped with a recording device, and more particularly to improvements in its image display.

[Conventional technology] Conventionally, in the process of advancing a catheter to the target site in the patient's body, the contrast agent injection image was first recorded on a VDR (video disc recorder) or VTR (video tape recorder).
One frame of the recorded image is reproduced and displayed on a dedicated monitor as a reference image (blood vessel map).

[Problems to be Solved by the Invention] When performing cardiovascular surgery such as coronary artery dilation, movements cannot be grasped using the frame reference image, making catheter operation inconvenient.

In addition, since there are dedicated monitors for the fluoroscopic image displayed in real time and the reproduced reference image, the surgeon must compare these two monitors while advancing the catheter, and only the fluoroscopic image is displayed. There is a sense of inconvenience in not being able to pay close attention to the situation.

An object of the present invention is to facilitate dynamic understanding of a cardiac canal map using a plurality of reproduced images, and to simultaneously observe a fluoroscopic image and a reference image on one monitor, thereby facilitating catheter operation. An object of the present invention is to provide an X-ray TV digital device.

[Means for Solving the Problems] The above object is to provide a first frame memory for displaying an X-ray fluoroscopic image in real time in an X-ray TV digital X-ray apparatus equipped with a recording device, and a playback function of the recording device. a second frame memory having a certain time capacity for images;
an image reduction processing unit connected to the second frame memory; a synthesis processing unit for combining the real-time perspective image and the reproduced reduced image;
This is achieved by including a display device for displaying the composite image.

[Function] X that has a semiconductor memory that stores TV images for a certain period of time
In the X-ray TV digital X-ray device, a plurality of recorded and reproduced contrast medium injection images are stored in the memory, images of a specified period of the recorded images are repeatedly reproduced and reduced in size, and the reproduced images are displayed in real time. displayed on a part of the perspective image screen.

[Example] A preferred embodiment of the invention will be explained based on the drawings.

FIG. 1 is a block diagram of the main part configuration showing one embodiment, and FIGS. 2 and 3 are diagrams illustrating screen displays according to the present invention.

In the drawing, 10 is an image intensifier (1, 1,) that converts an X-ray fluoroscopic image into a visible image, and 12 is T
V camera head, 14 its control unit or CCU, 16 A/D converter, 18 real time (
20 is a frame memory for composite images, 22 is a D/A converter, and 24 is a monitor, which constitute an X-ray TV digital device for real-time display.

Next, 30 is a recording device, 38 is a plurality of frame memories, 32 is a thinning interpolation circuit (image reduction processing section), 34 is a buffer memory, and 36 is a pixel selector. In addition, 3
Reference numeral 6 represents an address control circuit for a processing section requiring address specification.

As in the illustrated example, 1.1. (Brightness multiplier tube) 10, camera head 12, C, C, U (camera control)
14, the X-ray image signal is sent to a recording device (VTR or VCR).
When recorded on DR) 30, the A/D! The image is then displayed as a perspective image on the monitor 24 in real time through the frame memory 18, pixel selector 36, frame memory 20, and D/A converter 22.

On the other hand, the reference image is obtained by reproducing the contrast image injection image that has been recorded in the recording device 30, and by changing the switch SW.
The data is converted into D and stored in a frame memory 38 having a certain capacity.

When displaying according to the present invention, the perspective image is read out from the frame memory 18, the reference image is read out simultaneously from the frame memory 38, and the perspective image is directly transferred to the pixel selector 3.
6, and on the other hand, the reference image is subjected to an image reduction operation at an appropriate magnification by a thinning and interpolation circuit 32, and then stored in a buffer memory 34.
After being stored in , the image is read out and input to the image selector 36 under address control so as to be displayed at a predetermined position on the screen (a corner as shown in FIGS. 2 and 3).

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

In this way, a real-time fluoroscopic image and a moving image reference image are displayed on one screen, making it easier to understand the blood vessel map.

The display position of the reference image is preferably one 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 course of the fluoroscopic image depending on the right coronary artery, the left coronary artery, the fluoroscopic direction, etc.

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

Further, it is preferable that the frame memory 38 stores contrast agent injection images for one heartbeat.

Regarding the use of the screen, a foot switch is used, and its ON period is displayed as in the previous embodiment, and when the foot switch is OFF, a reference image is displayed on the screen in synchronization with this. If the reference image can be sufficiently observed before displaying the fluoroscopic image (turning on the foot switch), catheter operation will become easier.

[Effects] According to the present invention, it is possible to dynamically understand a blood vessel map using recorded images, and since a fluoroscopic image and a reference image are displayed on the same screen, catheter operation is facilitated by concentrating attention on one screen. become.

[Brief explanation of the drawing]

FIG. 1 is a block diagram illustrating an embodiment of the present invention, and FIGS. 2 and 3 are diagrams illustrating screen displays according to the present invention. 18 is a memory for one frame, 30 is a recording device, 2 is a thinning/interpolation circuit, 36 is a pixel selector, and 38 is a memory for multiple frames. Patent applicant: Shimadzu Corporation Figure 1

Claims (1)

[Claims] 1. X-ray TV equipped with a recording device In a digital X-ray device, a first frame memory for displaying an X-ray fluoroscopic image in real time, and a second frame memory having a capacity for a certain amount of time for images reproduced by the recording device. , an image reduction processing section connected to the second frame memory, a synthesis processing section for synthesizing the real-time perspective image and the reproduced reduced image, and a display for displaying the synthesized image. , X-ray TV digital equipment.