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Tomograph

An X-ray and equipment technology, applied in the field of X-ray CT equipment, can solve problems such as taking a long time

Inactive Publication Date: 2005-07-20
HITACHI MEDICAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] It is known that the above-mentioned prior art requires a lot of time (20 minutes to about 1 hour) for image calculation processing after shooting and before it is displayed as an image on an image display device.

Method used

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Embodiment Construction

[0022] Preferred embodiments of the X-ray CT apparatus according to the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing the overall configuration of an X-ray CT apparatus according to the present invention, showing a partial cross-sectional configuration. figure 2 It is a partially enlarged view enlargedly displayed for easy understanding of the partial cross-sectional structure of FIG. 1 .

[0023] This X-ray CT equipment is composed of a fixed gantry 1 , a rotating arm 2 , an X-ray generator 3 , a two-dimensional X-ray detection device 4 , a first rotation system 6 , a second rotation system 5 , a chair 8 , and a headrest device 9 . The fixed stand 1 has an inverted L shape supported by a support 1a, and has a second rotation system 5 and a first rotation system 6 at its ends. The rotating arm 2 is suspended from the end of the fixed stand 1 . The first rotating system 6 maintains the rotating arm 2 in a suspended sta...

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Abstract

An X-ray CT apparatus takes a short time for image processings in irradiating a cone beam X-ray to the whole jaw, including a dental arc, and to a local region, and to obtain a panoramic image showing conditions of a dental row. The apparatus includes, a rotative arm suspended at one end of a support column, and an X-ray generating device and a two-dimensional X-ray detecting device oppositely fixed to respective ends of the rotative arm. The rotative arm is supported via a dual rotation system. An object to be examined sits on a chair which is movable upward and downward, and an examining region is adjusted to the height of the imaging center of the imaging apparatus. The object's head is fixed by a fine-adjustable head holder. Imaging is performed so that the distance between rotation centers of the two rotation systems substantially coincides with the object's dental arc.

Description

technical field [0001] The present invention relates to an X-ray CT apparatus that irradiates X-rays at a local position of an object and processes the projected image to take a tomographic image, etc., and particularly relates to an X-ray CT apparatus that can obtain Any CT tomographic image and panoramic image of this part are suitable for X-ray CT equipment for dental treatment and other photography. Background technique [0002] In dental treatment, the following methods are commonly used at present: the ordinary photography method of X-ray photography by placing the film against the back of the tooth, the panoramic photography method of taking photography by rotating the X-ray tube and the film at the same time, and the enlargement method. The distance between the X-ray tube and the film is used for cranial photography, etc. Dental X-ray panoramic photography is a method of photographing curved surface faults along the continuity of the dentition. It is a photographic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/51
CPCA61B6/548A61B6/14A61B6/0478A61B6/032A61B6/4085A61B6/51
Inventor 宫野严
Owner HITACHI MEDICAL CORP
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