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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: 2005-05-11
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 device 100 operates in several settings and reconstructs tomographic images from data output by the scanning gantry device 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 Hereinaf...

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PUM

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Abstract

In order to provide an aperture position adjustment mechanism of an X-ray CT system with low cost and high precision so as to stably reconstruct an X-ray tomographic image, the first shaft (23) is equipped with a bore (23a) at a position deviated from the central axis and is The base plate (20) perpendicular to the rail pair (21a, 21b) is rotatably supported. The second shaft (25) is accommodated and rotatably supported in a bore (23a) passing through the first shaft (23). As the second shaft (25) rotates eccentrically under the action of the motor (7) and follows the above-mentioned eccentric rotation, the first shaft (23) moves around the central axis of the bore (23a) in the direction opposite to the above-mentioned rotation direction. Rotating eccentrically, the aperture (6) moves along the guide rails (21a, 21b).

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 Patents(China)
IPC IPC(8): A61B6/03A61B6/06G01N23/04H05G1/02
CPCA61B6/035A61B6/06G01N23/046H05G1/02A61B6/4021G01N2223/419
Inventor 泉原彰
Owner GE MEDICAL SYST GLOBAL TECH CO LLC