SU1484343A1 - X-ray apparatus - Google Patents

Abstract

This invention relates to the field of medical radiotechnology. The purpose of the invention is to expand the diagnostic capabilities by obtaining simultaneous and geometrically conjugated images in the x-ray and visible spectral ranges. For this purpose with the optical center of the x-ray emitter, the camera is optically coupled to the protective cover. cameras. The optical wedge of the viewfinder sharpness was used as a marker of the central axis of the X-ray beam. Perimet The radiography and light-contrast marks are fixed on the subject table on the subject table. f-ly, 2 ill.

Description

This invention relates to medical x-ray technology.

The purpose of the invention is to expand the diagnostic capabilities by obtaining simultaneous and geometrically conjugated images in the x-ray and visible spectral ranges.

FIG. 1 shows the radiographic apparatus, a general view; in fig. 2- subject table, top view.

The radiographic apparatus contains a monoblock having a steel case 1 mounted on a movable stand 2. Inside the case 1 are a high-voltage transformer (not shown) and an X-ray tube

3. Case 1 is lined with lead from the inside and filled with transformer oil.

4. To exit the X-rays in the monoblock case 1, there is a window 5, mechanically connected to the diaphragm

6. The latter case has an inlet 7, an outlet 8 and a lateral 9 hole. Inside the housing wall of the diaphragm 6 are lined with lead. The opening angle of the x-ray beam is determined by the opening width of the lead shutters 10 and 11. In the center of the diaphragm 6 at an angle of 45 ° to the central axis F0 of the x-ray beam there is an x-ray mirror 12 having a plane-parallel glass base and an outer mirror coating on its lower plane. The side wall of the diaphragm 6 on the side of the opening 9 is adjacent a box-shaped casing 13, the inner walls of which are lined with lead. Inside the housing 13, a mirror-mounted camera 14 is mounted to the base of the housing 13 by means of a screw 15. The lens 16 of the camera 14

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has an anterior S and a posterior S anchor points.

Through the lens 16, an image of the object is formed on the film 17. Between the lens 16 and the film 17 is a jumping mirror 18, which at the time of the shooting is deflected upward (dotted line in Fig. 1), and during sighting it is rotated at an angle of 45 to the optical axis of the lens 16 as shown in FIG. 1. In this position of the mirror 18, an image of the object appears on the ground glass 19, observed through a viewfinder containing a lens 20, a pentaprism 21 and an eyepiece 22. The camera 14 is mounted so that its optical axis ii passes perpendicular to the central axis F0 of the x-ray beam the central point C of the mirror 12. In this case, the front nodal point S of the lens 16 is separated from the point C at a distance equal to the distance from the focal spot F of the X-ray tube 3 to the point C (). The object of study (not shown) is placed on the plane of the subject table 23 in the K field and can be recorded simultaneously with X-rays on the X-ray cassette 24 installed in the cassette holder 25 and the camera 14 on the film 17. To center the object of study in the field

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The deck of the subject table 23 and the camera is charged with photographic film 17. The object of study, such as the patient’s hand, is placed on the plane of the subject table 23 in the shooting area K and is oriented along the image of the wedges of the optical centralizer with the electric light 26 turned on.

Shooting of the object of study is performed simultaneously with the x-ray tube 3 on the x-ray cassette 24 and the camera 14 on the film 17.

On the radiograph, an image of the hand and an image of four radiopaque marks 27 are obtained. On the photograph, an image of the hand and the light-contrast marks are obtained.

The combination of geometrically conjugated images obtained on the proposed radiographic apparatus allows the physician to establish the relationship between the pathology of the internal organs and external changes occurring in soft tissues and skin.

Claims (2)

1. A radiographic apparatus containing a table mounted on a tripod with an x-ray cassette holder and an x-ray emitter equipped with a diaphragm with 40 45 A optical wedge 35 is used by an optical centralizer having a sharpness mark on the viewfinder of camera 14, applied in the center of ground glass 19, which is projected into the center of the shooting zone by an electric lamp 26 installed in front of the ocular 22 of the camera viewfinder 14. female shots. The geometrical X-ray photograph and the photograph of the object differ only in the scale of the image. Images are brought to the same scale on a phototransformer or photographic enlarger by combining the image of radiopaque and opaque contrast marks 27 installed on the plane of the subject table 23 at the corners of the shooting floor K. The radiographic apparatus operates as follows. An X-ray cassette 24 charged with X-ray film is installed in the cassette holder 25 under 50 the central axis of the x-ray beam, an x-ray transparent mirror installed at an angle of 45 to the central axis, and a source of light, which, in order to expand diagnostic capabilities by obtaining simultaneous and geometrically conjugate images in the x-ray and visible spectral ranges, A camera mounted in a protective casing is introduced, the optical axis of which passes perpendicular to the central axis of the x-ray beam through the center of the X-ray transparent mirror, and the distance between the front node The left point of the camera lens and the center of the radiolucent mirror are equal to the distance between the focus of the x-ray emitter and the center of the radiolucent mirror, and the radiopaque and contrast marks are fixed on the plane of the object table around the perimeter of the shooting floor. an optical centralizer having mar the central axis of the x-ray beam, an x-ray transparent mirror installed at an angle of 45 to the central axis, and a source of light, which, in order to expand diagnostic capabilities by obtaining simultaneous and geometrically conjugate images in the x-ray and visible spectral ranges, A camera mounted in a protective casing is introduced, the optical axis of which passes perpendicular to the central axis of the x-ray beam through the center of the X-ray transparent mirror, and the distance between the front node The left point of the camera lens and the center of the radiolucent mirror are equal to the distance between the focus of the x-ray emitter and the center of the radiolucent mirror, and radiopaque and opaque labels are fixed on the plane of the object table along the perimeter of the shooting floor. 514843436 2. The device pop. 1, distinguished as a marker of the central axis of the axis and the fact that the light source used the optical wedge of the optical centralizer pickup was set by the sharpness of the camera's viewfinder, the camera's viewfinder red "I 21 22 26 FIG. Have 23 P 21 C7 SOD / G.2 27 I h I P Uj