JP3249168B2 - Cassette-type X-ray fluoroscope - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the mounting of a cassette in a cassette type X-ray fluoroscopy table for performing normal imaging using a cassette.

[0002]

2. Description of the Related Art A conventional apparatus will be described with reference to FIGS. The X-ray fluoroscopy table captures an X-ray image of a subject placed on a top plate on a film or converts the X-ray image into an I.D. I. Into an optical image and observe it on a television monitor. At the time of photographing, the film is conveyed from a magazine loaded in a film take-out storage unit (not shown), and is loaded into a film holder 7 in the rapid-release case 4 for photographing.

However, the size of the film loaded in the film holder 7 is limited. For example, only a 10 × 10 ″ size film is used for a 1-channel, 1-size fluoroscope, and only a 10 × 10 ″, 11 × 14 ″, 14 × 14 ″ -size film is set for a 1-channel, 3 size fluoroscope. 7 can not be stored. For this reason, when using a film having a larger size, the cassette is loaded with the film and photographing is performed. This cassette is loaded into the cassette auxiliary frame, and the
The camera was mounted on the cassette rail 13 attached to the upper part of the inside for photographing.

[0004] In addition, when performing divided photographing, the divided mask 9 supported by the guide rail 8 on the upper surface of the photographing case 4 is moved into the irradiation field for photographing at the time of photographing, and the divided mask 9 is retracted when the cassette is used. The irradiation field was adjusted to match the film size in the cassette.

[0005]

On the X-ray fluoroscopy table, the distance between the top plate and the film must be as short as possible in order to obtain a photograph with high sharpness. Conventionally, shooting may be performed with a film having a size larger than the size accommodated in the film holder 7 in the snap-shot case 4. For this reason, a cassette capable of loading a large-size film into the snap-shot case 4 is mounted on a cassette rail. 13 was attached.

However, a space for the thickness of the cassette rail 13 has to be provided in the minute-speed photographing case 4. As a result, the cassette rail 13 was separated from the top plate 3 by 13 minutes at the time of quick shooting, and the sharpness was low.

Accordingly, an object of the present invention is to shorten the distance between the top plate and the film and obtain a photograph with high sharpness.

[0008]

In order to achieve the above-mentioned object, the present invention comprises a film holder for loading a film and performing a quick-shot photographing, and a divided mask which is moved and supported by a guide rail provided on an upper surface of the quick-shot case. In the cassette-type X-ray fluoroscopy table, a cassette auxiliary frame for loading a film cassette can be mounted on the guide rail for the divided mask.

[0009]

[Function] At the time of cassette photographing (normal photographing), since the divided mask used for quick shooting is not inserted into the irradiation field, the cassette is mounted on the guide rail of the divided mask for photographing. This eliminates the need for a cassette rail in the rapid-moving case, so that space can be omitted and the distance between the top plate and the film can be reduced.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a cross-sectional view showing a snapshot case of the present invention, FIG. 2 is a front view of an X-ray fluoroscopy table with a partial cross section, and FIG. 3 is a top view of the snapshot case with a divided mask attached. 1 is an X-ray tube device, 2 is a diaphragm device, 3 is a top plate on which an object is mounted, 4 is a snap-shot case, 5 is a gantry on which the snap-shot case 4 and the like are stored and the top plate 3 is mounted, and 6 is a gantry 5 Legs to be supported, 7 is a film holder for loading a photographic film, 8 is a guide rail used for divided photographing and cassette photographing, 9 is a divided mask to be mounted at the time of rapid photographing divided photographing, 11 is a cassette auxiliary frame for supporting the cassette 12, 12 Is a cassette.

Next, the case 4 of the present invention will be described in detail. A film holder 7 is housed inside the rapid-moving case 4. A guide wheel is attached to a lower portion of the film holder 7 and is guided and supported by a rail at a lower portion in the rapid-moving case 4. A guide rail 8 is mounted on the upper surface of the snapshot case 4, and a divided mask 9 is provided here.
Alternatively, the cassette 12 supported by the cassette auxiliary frame 11
Is attached.

First, the operation at the time of rapid photography will be described. First, a film (not shown) containing a non-photographed film in the gantry 5 is conveyed to the film holder 7, and the film is loaded into the film holder 7 to perform photographing. . Further, when performing divisional photographing at the time of quick shooting, photographing is performed by attaching a division mask 9 of a desired shape and size to the guide rail 8.

At the time of cassette photographing, an unphotographed film is mounted on the cassette 12, fitted to the cassette auxiliary frame 11, and then mounted on the guide rail 8 for photographing. Further, when performing divided photographing at the time of cassette photographing, photographing is performed with a divided mask (not shown) mounted on the upper portion of the cassette.

As described above, since the cassette 12 can be attached to the guide rail 8 used for the quick-shot division photographing, the cassette rail conventionally provided inside the quick-shot case 4 can be removed. Thereby, the position of the film holder 7 at the time of quick shooting can be made closer to the top plate 3, so that a photograph with high sharpness can be obtained. Also, the cost can be reduced by removing the cassette rail.

[0015]

According to the present invention, a cassette can be attached to a guide rail used for quick-shot division photography, and the guide rail is used for both cassette photography and rapid-shot division photography. There is no need to provide a supporting cassette rail. As a result, the distance between the top plate and the film can be reduced, and a photograph with high sharpness can be obtained. In addition, since the guide rail is shared, the number of parts used is reduced and the cost is reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view of a snapshot case of the present invention.

FIG. 2 is a front view of a partially sectioned X-ray fluoroscopy table;

FIG. 3 is a top view of the snapshot case with the divided mask attached.

FIG. 4 is a cross-sectional view of a conventional snapshot case.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 X-ray tube apparatus 2 Diaphragm apparatus 3 Top plate 4 Quick-shot case 5 Stand 6 Leg part 7 Film holder 8 Guide rail 9 Division mask 11 Cassette auxiliary frame 12 Cassette

Claims (1)

(57) [Claims] 1. A cassette type X-ray fluoroscopic table provided with a film holder loaded with a film and used for quick photography, and a divided mask movable and supported by a guide rail provided on an upper surface of a rapid photography case. A cassette auxiliary frame for loading a cassette can be mounted on the guide rail for the divided mask.
A fluoroscopy table.