JP2572557Y2 - Digital X-ray equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention is used in the field of radiography. The present invention relates to a digital X-ray imaging apparatus, specifically, displays a real-time X-ray fluoroscopic image of an affected part on one TV monitor, and reproduces and displays the previously recorded X-ray fluoroscopic image on the other TV monitor, In particular, the present invention relates to a digital radiography apparatus for performing interventional radiology (IVR) of a circulatory system.

[0002]

2. Description of the Related Art For example, IVR is a technique in which a blocked blood vessel in the treatment of myocardial infarction or the like is displayed on a TV monitor by X-ray fluoroscopy, and at the same time, blood is supplied by operating a catheter or the like. It is a treatment method performed by X-ray fluoroscopy.

At the time of executing such an IVR, the previously recorded image is reproduced for reference and displayed on another TV monitor. First, the image of the first frame of the recorded image file is displayed. You.

[0004]

When an operator performs an IVR, an image to be displayed as a reference image during the operation is an image filled with a contrast agent. However, in the related art, as described above, when the image file is read, the first frame is displayed, so that it is necessary to proceed from there to the phase full of the contrast agent, which takes time. Also, since the first frame is usually an image when no contrast agent is contained, it is difficult even to determine at which angle the image file is a file taken at an angle.

[0005] The purpose of the present invention is to perform IVR,
An object of the present invention is to provide a digital X-ray imaging apparatus capable of displaying the most necessary reference image first among many images recorded beforehand.

[0006] The object described above is to provide a digital image recording medium and at least two TV monitors in an X-ray TV apparatus, one of which displays a real-time fluoroscopic image, and the other of which monitors on a recording medium. In the digital radiography apparatus for displaying the reference image of the designated file, the digital image of the X-ray fluoroscopic image is continuously obtained after the contrast agent is injected into the patient until the contrast agent fills the subject and flows away. Means for recording a single file on the digital image recording medium for each single radiographing operation, and means for recording a reference image such as when the imaging agent is filled with the contrast agent from the start of the radiographing at the time of recording. Elapsed time setting means, scanning time setting means for one frame of an image at the time of recording, and a digital image recording medium based on the set two time data. Means for designating a file of the above reference image.

[0007]

[Effect] It is known that a time period from the start of injection of the contrast medium to the time when the affected area is filled with the contrast medium is approximately 2.1 to 2.5 seconds, and the elapsed time data is set in advance. Since the scanning time per frame is 1/30 second, the number of the image file to be referred to can be found by the calculation. This is designated first, reproduced and displayed on the TV monitor.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a configuration block diagram of the first embodiment.

First, before the execution of the IVR, the recording of the X-ray fluoroscopic image is performed. Each time a contrast is performed on the patient 2, the operator holds the hand switch 4 and performs X-ray imaging. Specifically, when the hand switch 4 is gripped, a high pressure is applied to the X-ray tube 6 from the X-ray high-voltage generator 3, and an X-ray fluoroscopic image transmitted through the patient 2 on the top 1 is displayed as an I.D. I. (Image intensifier) 7, TV camera 8, CCU
(Camera control unit) 9, digitized by an A / D converter 10, digitally processed by an image processing unit 11, converted to analog by D / A converters 12 and 13, and sent to TV monitors 14 and 15. Is displayed. At the same time, one contrast 1 on the magnetic disk (digital image recording medium) 16
It is recorded as an image file. This is C arm 1
The photographing is repeated at various angles of the affected part while moving 9.

Next, when the fluoroscopic foot switch 5 is depressed during X-ray image fluoroscopy for performing IVR, real-time (real-time) X-ray fluoroscopy is performed on the fluoroscopy monitor 14 through the same path as in the above-described imaging and recording. The image is displayed.

[0011] It is desirable to view an image previously taken and recorded as a reference image during the IVR operation. The reference image necessary for the treatment that is desired to be seen is a recorded image such as a time phase when the contrast agent is filled in the subject. For example, it has been found from the actual experience that the elapsed time from the injection of the contrast agent through the end opening of the catheter to the filling of the blood vessel of the test site with the contrast agent is approximately 2.1 to 2.5 seconds. It is also known that the scanning time of one TV image screen is 1/30 second.

[0012] Therefore, the operator needs to set the console 1 in advance.
8 to input and set the two data,
For example, if data of 2.1 seconds is set as the elapsed time of the reference image to be displayed first, when the foot switch 5 is depressed and an appropriate key of the console 18 is pressed at the same time, the calculation function of the CPU 17 Is reproduced, and the recorded image is reproduced according to an instruction from the CPU 17 and displayed on the TV monitor 15.

An arbitrary recorded image is read out by selecting or changing an image file from the magnetic disk 16 based on the elapsed time data set as described above.

[0014]

According to the present invention, when a magnetic file is read out, an image at the time when the contrast medium is first filled is displayed, so that it is possible to save the trouble of selecting a reference image necessary for the IVR. In addition, since the image at the time when the contrast agent is full is displayed as soon as the file is selected, it is possible to immediately determine at which angle the file has been shot.

[0015]

[Brief description of the drawings]

FIG. 1 is a configuration block diagram showing an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Top board 4 Hand switch 5 Foot switch 8 TV camera 16 Magnetic disk (digital image recording medium) 18 Console 19 C arm

Claims (1)

(57) [Scope of request for utility model registration] An X-ray TV apparatus is provided with a digital image recording medium and at least two TV monitors. One TV monitor displays a real-time fluoroscopic image, and the other TV monitor displays a real-time fluoroscopic image.
In a digital X-ray imaging apparatus for displaying a reference image of a specified file on a recording medium on a monitor, an X-ray fluoroscopic image is obtained after a contrast medium is injected into a patient until the contrast medium is filled into a subject and flows away. Digital images continuously and 1
A means for recording a single file on a digital image recording medium for each photographing, and setting of an elapsed time from the start of the photographing at the time of recording to the time of photographing of a reference image such as when a contrast agent is filled in a part to be examined. Means, a scanning time setting means for one frame of an image at the time of recording, and means for designating a file of a reference image on a digital image recording medium based on the set two time data. A digital radiography apparatus characterized by the above-mentioned.