JPH01204041A - Roentgenographic diagnosing device - Google Patents

Abstract

PURPOSE:To accurately reproduce the image of roentgenoscopy because a roentgenoparent image is effectively stored and kept with a roentgenographic image by recording and displaying the roentgenoparent image with the roentgenographic image. CONSTITUTION:Usually, the roentgenoparent image is used for monitoring and continuously recorded in a digital VTR 10. At the time of generating the roentgenographic image, said image is recorded in the VTR 10 instead of the roentgenoparent image in the same system as a moving picture after performing buffering and dividing into blocks by an input image buffer 8 in order to adjust the roentgenographic image to the recording system of the VTR 10. At such a time, an identification code is added with a retrieval ID. At the time of reproducing the image, a reproduction control part 11 retrieves and reads the image data from the VTR 10 according to the retrieval and display systems of the image designated by an integration control part 5. The kind of image is transferred to buffers 15 and 13 by a code recognition part 12 and displayed on devices 14 and 16. It is transmitted to a printer 17 to form a film 18 when required.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an X-ray imaging diagnostic apparatus capable of influencing both fluoroscopic and imaging images.

[Conventional technology]

In general, X-ray imaging diagnostic equipment uses fluoroscopic images, which have a low radiation dose per image, and photographed images, which have a high radiation dose per image, and the image quality of the latter is several steps higher than that of the former. Fluoroscopic images are used to recognize the area to be imaged and to determine the timing of imaging, and since long-term monitoring is required, the irradiation dose per image is approximately This is due to the fact that it is as low as 1 μR/image.

On the other hand, the captured images are used by doctors for interpretation and diagnosis, and high-quality images are required. Therefore, by increasing the irradiation dose to several mR/image and improving the spatial resolution, the number of images to be taken is limited accordingly.

In conventional X-ray imaging diagnostic equipment, for example,
As described in No. 900, there is a document related to recording captured images, but in many cases, fluoroscopic images are not recorded or reused at all because the image quality is poor and there is no practical image filing device that can record for a long time. It had been thrown away without a trace.

However, with recent advances in X-ray imaging technology,
Improved spatial resolution in fluoroscopic images has been achieved, and the medical utility of fluoroscopic images has attracted attention.

[Problem to be solved by the invention]

Conventionally, no consideration has been given to reproducing XIIA imaging diagnosis, and there has been a problem in that X-ray fluoroscopic images showing the progress of imaging are not recorded, reproduced, or displayed in a manner that supports efficient interpretation.

An object of the present invention is to record and store X-ray fluoroscopic images used for shadow 'I3 monitoring together with photographed images, and to enable reproduction of images useful for the progress of X-ray photography and diagnosis during interpretation.

[Means to solve the problem]

The above purpose is to use a digital VTR as an image storage device, divide the input image into blocks according to the recording/reproduction synchronization signal and the recording position m, and make it possible to record images in different formats, as well as to write an identification code of the image type. This is achieved by establishing and recording the information.

Here, images of different formats refer to images with different image capacities and image generation specifications.

[Effect]

Since the recording/playback speed of a digital VTR is faster than the average data generation speed of fluoroscopic images and photographed images, the input image data is divided into blocks and recorded in accordance with the recording/playback synchronization signal of the digital VTR. At this time, an identification code is added to the recorded data so that the fluoroscopic image and the captured image can be identified during image reproduction. As a result, in addition to being able to record both of the above-mentioned images, it is also possible to selectively reproduce and display individual images by recognizing the identification code.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1, 2, and 3.

FIG. 1 is an overall configuration diagram of an X-ray diagnostic apparatus according to the present invention. 1 is an X-ray tube, 2 is an imaging unit that detects xIil & transmission amount and converts it into an image, 3 is an X-ray generation control unit that controls the X-ray tube 1, 4 is a comprehensive control unit that comprehensively controls each function, 5 1 is a user operation console that instructs the general control unit 4 to set the fluoroscopy mode, photographing mode, etc., 6 is a fluoroscopic image signal, 7 is a photographed image signal, and 8 is a temporary storage of the photographed image signal, and the image data is stored in accordance with the recording format of the digital VTR. 9 is an input image buffer that divides the image into blocks and outputs them; 9 is a part that performs image processing and controls recording according to the recording format of the digital VTR;
10 is a digital VTR for recording and storing image data. Further, 11 is a reproduction control unit that reads image data from the VTR 10, 12 is a transfer control unit that recognizes the identification code of the reproduced image and transfers one image data to a predetermined image output unit, 13 is a display buffer for perspective images, and 14 15 is a display buffer for photographed images; 16 is a display device for photographed images (such as CRT); 17
1 is a film printer that converts photographed images into film, and 18 is an output film.

The operation in the above configuration will be explained. X to the subject
When performing radiographic influence, first perform X-ray fluoroscopy, and while monitoring the fluoroscopic image, confirm the target area and the timing of imaging.
Select the optimal conditions and perform X-ray photography. At this time, if the fluoroscopic images for monitoring with a small amount of X-ray irradiation are recorded as continuous moving images (30 images/second), real-time images can be obtained although the resolution is low. Furthermore, the perspective image is similar to a normal television image and can be recorded/played back on the digital VTR 10 in the same format as a normal television image.

The input time for captured images with many X-ray irradiation scenes is 2661118
Although it is long at 8e, it can provide high-resolution and high-definition images. However, this image has a huge capacity of more than 2048" words (8 Mb). Since fluoroscopy is interrupted during imaging, both do not occur at the same time. For this reason, 1. is continuously recorded on a digital VTR while being used for monitoring, and when a photographed image is generated, the photographed image is buffered and divided into blocks by an input image buffer 8 in order to match the recording format of the digital VTR, instead of a fluoroscopic image. The video is recorded on a digital VTR in the same format as the moving image.At this time, an identification code is added along with the search ID so that it can be determined whether the captured image is a fluoroscopic image when the recorded image is replayed.

On the other hand, when replaying, the reproduction control section 11 searches and reads image data from the digital VTR l0 in accordance with the image search and display format instructed by the integrated control section 5. Then, the code recognition unit 12 transfers the image type to the buffers 15 and 13, and displays it on the device 14.16. moreover.

Photographed images or fluoroscopic images are sent to the printer 17 as necessary.
A feed film 18 is created.

The contents of the above operation will be explained as follows using the time chart of FIG.

Reference numeral 19 indicates the generation timing of the fluoroscopic image, and a1 to a5 each represent one screen of the fluoroscopic image. 20 is the generation timing of the photographed image, and bl and b2 are each for one screen of the photographed image. Reference numeral 21 indicates an image data recording position on the medium of the digital VTR. f1 to fio indicate one frame of the television display screen.

Reference numeral 22 indicates the display contents of each screen of the CRT 14. Reference numeral 23 indicates display contents for each side of the CRT 16. Based on this time chart, the photographed image is divided into n parts (f3 to fe) and recorded between recordings of the fluoroscopic images. During reproduction 2 display, during the period when there is no image data, both sides of the previous display are held and displayed as they are.

FIG. 3 shows the contents of block division and the addition of image identification codes.

In this embodiment, the photographed image has 40,962 words, and one word has a maximum of 16 bits. FIG. 3(a) shows the structure 19 of the input image buffer 8 and the output procedure. As shown in this figure, the photographed image 7 is divided into upper 8 bits and lower 8 bits in pixel units, and are sequentially recorded in separate buffers 19a and 19b that are accessed by byte. Then, when it becomes possible to record on the digital VTR10, the contents of 19 are transferred to the digital VTR10.
The capacity obtained by subtracting 4 bytes from the user data recording unit is defined as one block, and B is written in the order of 19a and 19b. Oe 1
3oo' t B10... is output to the recording control section 1.

FIG. 3(b) shows the relationship between identification codes and image blocks for recording. The identification code is composed of an image identification code (2 bytes) that distinguishes the image itself and a code (2 bytes) that indicates the divided block number of the image. The recording control unit generates and updates the identification code 22, and each time it receives a block divided output, it adds the previous identification code 22 to the beginning of the block output, and further adds the previous identification code 22 to the beginning of the block divided output.
A TR-specific recording/playback control code is added to the final recording data, which is then sent to a digital VTR.

Note that it is also possible to adopt a method of displaying both of the above-mentioned images by time-sharing or screen-dividing using one display screen.

Furthermore, by using an appropriate intermediate buffer and a pause function of the digital VTR, intermittent fluoroscopy/photography can be efficiently recorded, and still image display can be easily controlled.

〔Effect of the invention〕

According to the present invention, it is possible to efficiently store and save both fluoroscopic images, which were not Pied in the past, together with the captured image, so that the X-ray examination can be accurately reproduced when re-interpreting the image at a later date or referring to it for research purposes. This has the effect of making it possible to understand the background in which the photographed image was taken.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an apparatus according to an embodiment of the present invention, and FIG. 2 shows image generation and recording. The time chart regarding display and FIG. 3 are explanatory diagrams regarding the recording method of image signals. 3... X-ray control unit, 4... General control unit, 6... Fluoroscopic image data, 7... Captured image data, 9... Recording control unit. 10... Digital VTR, 11... Playback control section,
12...Identification code recognition unit. ¥x'fB Nop 3rd Old

Claims (1)

[Claims] 1. An X-ray diagnostic device consisting of a part that obtains and displays an X-ray fluoroscopic image, and a part that uses this image to confirm the imaging time, performs X-ray photography, and records and displays this image. An X-ray imaging diagnostic apparatus characterized in that it is capable of recording and displaying a fluoroscopic image together with an X-ray imaging image. 2. X according to claim 1, characterized in that in the image storage section, an identification code for identifying a fluoroscopic image and a photographed image is added to each recorded image so that it can be selectively reproduced.
Radiography diagnostic equipment. 3. The X-ray imaging diagnostic apparatus according to claim 1, wherein the image storage section is capable of reproducing and displaying a fluoroscopic image and a photographed image simultaneously or individually.