JPH04200450A - Digital X-ray imaging device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (b) Industrial application fields INDUSTRIAL APPLICATION This invention is utilized in the field of X-ray photography.

The present invention relates to a digital X-ray imaging apparatus, and more particularly to a digital X-ray imaging apparatus in which data such as setting conditions for X-ray imaging can be used at a later date.

(b) Prior art When performing X-ray imaging, it is necessary to use a drive device to align the subject and the imaging device, and the three-dimensional position information of these mechanisms and the X-ray conditions regarding X-ray irradiation, Furthermore, the technician records the image acquisition conditions, such as the number of images per second, in the irradiation record, and performs X-rays again under the same conditions later.
When radiography needs to be performed, the technician manually sets these past conditions while looking at the radiation record.

(c) Problems to be Solved by the Invention X-ray photography is performed for a single patient in order to first diagnose the patient. After that, at the stage of treatment and follow-up, it becomes necessary to take X-rays again at the same location and under the same conditions as when the images were first taken. In this case, in order to reproduce the previous condition settings, it is necessary to take the troublesome steps described above.

An object of the present invention is to provide a digital X-ray system that records radiography condition setting data together with the XvA fluoroscopic image at the time of the first radiography in order to perform X-ray radiography again under the same radiography conditions at a later date, and allows the data to be read out if necessary. The purpose of the present invention is to provide a photographing device.

(d) Means for solving the problem The above purpose is to provide a mechanical drive controller that controls the positions of the X-ray tube, image intensifier, and top plate, and an X-ray controller that sets the X-ray conditions. a controller;
A recording device for recording respective data from the mechanical drive controller and the X-ray controller together with digital plane image data of an X-ray fluoroscopic image, and means for reproducing and reading the data recorded in the recording device. This is achieved by

(e) At the time of collecting the working X-ray fluoroscopic image, the three-dimensional position information of the mechanism generated in the drive unit that was necessary for the image collection, the X-ray conditions regarding X-ray irradiation, the number of images collected per second, etc. It also records all condition setting data, such as the imaging conditions, and when the image file of the pot is read out later, all the previous imaging conditions are automatically reproduced and set automatically.

For this purpose, the system controller of the digital X-ray imaging device is used to communicate with the X-ray high voltage control device and the X-ray imaging mechanical device, and collect data set from each. Also, when recording an image, it is recorded in the same or different recording device in association with this.

(f) Example A preferred embodiment of the invention will be explained based on the drawings.

FIG. 1 is a configuration block diagram showing an embodiment of the invention.
This will be explained below using X-ray digital subtraxylon angiography as an example.

X-ray conditions are set by the X-ray controller 10, and a voltage is applied by the X-ray high voltage device 9 based on the X-ray tube 2. The X-ray tube 2 generates X-rays, and the X-rays pass through the subject 1. II
(image intensifier) 3 and
The image is taken by a line TV camera (X-TV) 4, passed through a camera control unit (CCU) 5, A/D converted by an A/D converter 11, image processed by an image processing unit 12, and D The signal is D/A converted by the /A converter 13 and displayed on the TV monitor 14.

Further, digital image data is read from the frame memory in the image processing section 12 and recorded onto the magnetic disk 15 and the digital VTR 16.

On the other hand, the X-ray tubes 2 and II3 are held by a C-arm 7, and the subject 1 is placed on a top plate 6, and their respective positions are controlled by a mechanical drive controller 8.

Furthermore, the mechanical drive controller 8 and the X-ray control device 10 are able to communicate with a system controller 14, and the system controller 14 controls the entire system.

Now, X-ray photography is performed on the subject 1 for diagnosis. The image at this time is recorded as a file on the magnetic disk 15 or digital VTR.

At the same time, the scrap of C-arm 7 and the X-ray tube 2-11
3 distance (FID), X-ray tube 2 - subject 2 open plane ml (
FOD), setting data such as the height and position of the top plate 6, and the field of view of II3 are sent from the mechanical drive controller 8, and X-ray conditions such as tube voltage, tube current, and imaging time are sent from the X-ray controller 10 to the system controller 14. Sent.

Additionally, the system controller 14 maintains configuration data regarding image acquisition, such as an image acquisition rate per second determined by the X-ray irradiation mode, eg, continuous or pulsed mode.

When an image is recorded on the magnetic disk 15 or digital VTR 16, these conditions and image collection conditions (including the recording mode) are simultaneously recorded in the file directory.

The management data file regarding the above-mentioned condition settings can be stored in the same recording device 15 or 16, or in another recording device N.
18 may be recorded.

Suppose that at a later date, this subject 1 is treated or it becomes necessary to take X-rays again for follow-up observation. At this time, the previously photographed image data is read out from the magnetic disk 15 or digital VTR 16 for comparison.

At the same time, the mechanical position information, X-ray conditions, and acquisition conditions are also read from the previously recorded management file. At this time, in order to compare the previous image data and the current situation, the subject 1 must be photographed from the same angle with the photographing device and under the same X-ray conditions. Therefore, by operating keys on the console 17, the system controller 14 sends commands to the mechanical drive controller 8 and the X-ray controller 10 based on the previously recorded mechanical position information, X-ray conditions, and acquisition conditions. X-ray photography is performed by reproducing the conditions under which the image was taken, automatically making settings.

Incidentally, the present invention can also be applied to XTV-DR in the same manner as in the above-mentioned embodiment.

(g) Effects The position information of the drive unit, the X-ray conditions, and the acquisition conditions when X-ray photography is taken are simultaneously recorded in the image file, so the conditions at that time can be reproduced automatically at a later date. Can be set. This saves the X-ray technician the troublesome work of recording and setting the above-mentioned condition data, and also eliminates recording errors.

[Brief explanation of the drawing]

Figure @1 is a configuration block diagram showing one embodiment of the present invention. ■ is the subject, 2 is the X-ray tube, 3 is II, 4 is the X-ray television,
5 is a camera control unit, 6 is a top plate, 7 is a C-arm, 8 is a mechanical drive controller, 9 is an X-ray high voltage generator, 10 is an X-ray side @ device, 11 is an A/D converter, 12 is! ! 13 is a D/A converter; 14 is a system controller; 15, 16, and 18 are recording devices; and 17 is a console.

Claims (1)

[Claims] 1. A mechanical drive controller that controls the positions of the X-ray tube, image intensifier, and top plate, an X-ray controller that sets the X-ray conditions, and from the mechanical drive controller and the X-ray controller. A recording device for recording each data together with digital image data of an X-ray fluoroscopic image, and a means for reproducing and reading the data recorded in the recording device.
Digital X-ray imaging device.