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Aperture position regulating mechanism and method for computerized X-ray tomographic system

A technique for adjusting mechanisms and tomography, which is applied in computer tomography scanners, X-ray equipment, diaphragms for radiation diagnosis, etc., and can solve problems such as increased costs

Inactive Publication Date: 2003-02-26
GE MEDICAL SYST GLOBAL TECH CO LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this will cause other problems, such as increased costs and the need to strictly align the two ball screws during assembly.

Method used

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  • Aperture position regulating mechanism and method for computerized X-ray tomographic system
  • Aperture position regulating mechanism and method for computerized X-ray tomographic system
  • Aperture position regulating mechanism and method for computerized X-ray tomographic system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] Embodiments will be described in detail below with reference to the drawings.

[0031] FIG. 1 is a block diagram showing the configuration of an X-ray CT system of an embodiment. As shown in the figure, the system includes: a scanning gantry device 100 for irradiating an irradiated object with X-rays and detecting the X-rays penetrating the irradiated object; The apparatus 100 operates in several settings and reconstructs tomographic images from data output by the scanning gantry apparatus 100 for display.

[0032] The scanning gantry device 100 includes a main controller 1 for controlling the entire device 100 and various components which will be discussed below.

[0033]Reference numeral 2 denotes an interface communicating with the control console 200, and reference numeral 3 denotes a scanning gantry, which has a cavity for carrying an irradiation subject (patient) lying on the platform 11 (in a direction perpendicular to the plane of the drawing, the direction He...

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PUM

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Abstract

In order to provide an aperture position adjusting mechanism in an X-ray CT system with low cost and high accuracy to enable stable reconstruction of X-ray tomographic images, a first shaft (23) is provided with a bore (23a) at a position offset from a center axis, and is rotatably supported by a base plate (20) orthogonally to a pair of rails (21a, 21b). A second shaft (25) is received and is rotatably supported within the bore (23a) through the first shaft (23). The aperture (6) is moved along the rails (21a, 21b) as the second shaft (25) is eccentrically rotated by a motor (7) and, following the eccentric rotation and in a direction opposite to that of the rotation, the first shaft (23) is eccentrically rotated around the center axis of the bore (23a).

Description

technical field [0001] The invention relates to an aperture position adjustment mechanism, a scanning gantry device and a control method of an X-ray CT (Computerized Tomography) system for obtaining X-ray tomographic images of an X-ray irradiated object. Background technique [0002] The main function of the X-ray CT system is to collect the projection data obtained by the X-rays penetrating the irradiated object, and then reconstruct the X-ray tomographic image according to the projection data. Specifically, the following steps are taken: firstly, the subject to be irradiated is laid on a platform-type device, and then it is sent to the cavity portion of the scanning gantry device. Then, the rotating part of the scanning gantry device (on which the X-ray tube and the X-ray detector are integrally fixed) rotates. The X-rays strike the irradiated object from different angles, and the rays of different angles penetrate the irradiated object and are detected by the detector re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/03A61B6/06G01N23/04H05G1/02
CPCH05G1/02A61B6/035A61B6/4021A61B6/06G01N23/046G01N2223/419
Inventor 泉原彰
Owner GE MEDICAL SYST GLOBAL TECH CO LLC