JPS6355934B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an X-ray television apparatus that electrically rotates an image on a television receiver.

In X-ray television equipment, in order to accommodate the potential sense of direction during observation, the head side, or upper side, corresponds to the upper part of the television receiver surface, no matter what position the object to be examined, that is, the human body, is placed. It is essential to display. Therefore, if the placement of the subject is tilted, either move the subject to correct the tilt so that the orientation is maintained on the television receiver surface, or take measures to rotate the tilt of the image while leaving the subject as it is. It is necessary to correct it.

By the way, there are two methods for rotationally correcting the tilt of an image displayed on a television receiver: mechanically rotating the joint between the image intensifier output section and the television camera section, and an electrically rotating method on the television device side. There are two methods of electrical rotation: one that rotates the scanning electron beam of the image pickup tube of a television camera, one that rotates the scanning electron beam of the cathode ray tube of a television receiver, and one that rotates the scanning electron beam of the cathode ray tube of a television receiver. There is something that is put into memory and rotates by converting the read address from memory.

However, in any case, these mechanical or electrical rotation methods only correct the tilt of the image displayed on the television receiver; The inclination of the subject with the film holder and the X-ray diaphragm installed in the X-ray tube to limit the X-ray irradiation field is not corrected, resulting in tilted The drawback that the direction of the specimen and the direction of insertion of the X-ray diaphragm do not match cannot be overcome, and it is necessary to move the specimen in order to obtain an X-ray image without tilt or to match the direction of the X-ray diaphragm. There was no other way but to correct the tilt.

This invention was made in order to eliminate the above-mentioned drawbacks of the conventional ones.The film holder and the X-ray diaphragm are provided with a rotational drive device, and images are displayed on a television receiver using an electrical rotation method. An X-ray television that rotates the image and simultaneously corrects the rotation of the subject, the X-ray photograph, and the tilt of the X-ray diaphragm by supplying a control signal for this rotation to the rotation drive device. The purpose is to provide equipment.

An embodiment of the present invention shown in FIG. 1 will be described below with reference to the drawings. FIG. 1 is a block diagram of a device that uses a method of rotating a scanning electron beam of a cathode ray tube as a means for rotationally correcting an image displayed on a television receiver. In the figure, 1 is an X-ray controller;
is an X-ray tube that is controlled by this X-ray controller 1 to generate X-rays, 3 is an X-ray restrictor that limits the irradiation field of X-rays from the X-ray tube 2, 4 is a subject, and 5 is an X-ray Film holder for fixing film during photography, 6
is an image intensifier that converts the X-ray image of the subject 4 into an optical image; 7 is a television camera that captures the optical image; 8 is a cathode ray tube of the television receiver; 10 is a rotating scanning electron beam of the cathode ray tube 8. A scanning electron beam rotating coil 11 serves as an image rotation driving means for rotating the X-ray diaphragm 3.
The first one is tilted and rotated in a plane perpendicular to the direction of line incidence.
12 is a second rotational drive device that rotates the film holder 5 obliquely in a plane orthogonal to the X-ray incident direction; 9 is a rotational drive device for the above-mentioned rotating coil 10; the first rotational drive device 11; This is a rotation controller that supplies a control signal to the rotation drive device 12 to uniformly control the tilt rotation angle.

Next, the operation will be explained.

The X-rays generated from the X-ray tube 2 under the control of the X-ray controller 1 are irradiated to the subject 4 with the irradiation field limited by the X-ray diaphragm 3, and then passed through the film holder 5.
An X-ray photograph is taken on the film. Subject 4 photographed with Image Intensifier 6
By converting the X-ray image into an optical image and capturing this optical image with a television camera 7, the optical image is displayed on a cathode ray tube 8 of a television receiver.

By the way, in a state where the subject 4 is tilted to the upper left as shown in FIG. An image with the subject 4 tilted is displayed, but if a rotating coil 10 that can rotate the direction of the image is provided, the upper part of the subject 4 can be rotated to the upper part of the cathode ray tube surface, as shown in Figure b. You can move the screen and observe it.
However, the X-ray diaphragm 3' cannot be aligned with the direction of the subject 4, and in the film image of the X-ray photograph at that time, the subject 4 is forced to remain tilted as shown in FIG.

However, as in this embodiment, the X-ray diaphragm 3 is operated in conjunction with the rotating coil 10 that rotationally corrects the tilt of the image.
When the rotation drive devices 11 and 12 are provided for rotationally correcting the inclination of the film holder 5, the subject 4 can be seen in both the display image of the cathode ray tube 8 and the film image of the X-ray photograph, as shown in d and e of the same figure. It is possible to obtain an image in which the directions of the X-ray diaphragm 3' and the X-ray diaphragm 3' coincide with each other, and the upper part of the subject 4 is located on the cathode ray tube surface and the upper part of the film.

In the above embodiment, the control signal is transmitted to the rotating coil 10 of the television receiver and the film holder 5.
The explanation has been made regarding the case where the film holder is supplied in parallel to the rotary drive devices 11 and 12 of the X-ray diaphragm 3. For example, the correction operation of the film holder starts after the X-ray imaging switch is turned on, and after the X-ray imaging The correction may be canceled, or the correction operations of other parts may be controlled according to other conditions. Although FIG. 1 describes an example in which the scanning electron beam of a cathode ray tube is rotated, the same configuration can be used when rotating the scanning electron beam of an image pickup tube or converting memory addresses using each control signal. Can be done.

As described above, according to the X-ray television apparatus according to the present invention, it is possible to control the rotation of the image tilt of the television receiver as well as the rotation of the film holder and the X-ray diaphragm. Not only is it convenient to use, but it also has the effect of improving inspection efficiency and the quality of X-ray photographs.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an X-ray television apparatus according to an embodiment of the present invention, and FIG. 2 is an explanatory diagram of the operation of FIG. 1. 2... X-ray tube, 3... X-ray diaphragm, 4... Subject, 5... Film holder, 8... Braun tube,
9...Rotation controller, 10...Scanning electron beam rotation coil (image rotation drive means), 11...First rotation drive device, 12...Second rotation drive device.

Claims (1)

[Claims] 1. An X-ray tube that generates X-rays, an X-ray diaphragm that limits the irradiation field of the X-rays, and a film that irradiates the subject with the X-rays that limit the irradiation field and performs X-ray photography. a film holder for holding the image, a cathode ray tube for projecting the X-ray photograph, and an image rotation drive means for tilting and rotating the image on the cathode ray tube;
a first rotational drive device that rotates the X-ray diaphragm obliquely in a plane perpendicular to the X-ray incident direction; and a second rotational drive device that obliquely rotates the film holder in a plane orthogonal to the X-ray incident direction. An X-ray device comprising: a rotation controller for controlling the tilt rotation angle of the X-ray diaphragm and the tilt rotation angle of the film holder to be the same as the tilt rotation angle of the image on the cathode ray tube. television equipment.