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System and method for scanning X-ray faultage by electronic computer

A technology of electronic computer and tomography, which is applied in the direction of material analysis using radiation, can solve the problems of low spatial resolution index and high technical difficulty, and achieve the effect of improving spatial resolution index and shortening length

Inactive Publication Date: 2013-06-26
CAPITAL NORMAL UNIVERSITY
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Problems solved by technology

In addition, it is also very difficult to directly modify the hardware such as detectors and ray sources on the existing CT system. Therefore, the spatial resolution index of the existing CT system is not high

Method used

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  • System and method for scanning X-ray faultage by electronic computer
  • System and method for scanning X-ray faultage by electronic computer
  • System and method for scanning X-ray faultage by electronic computer

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Embodiment Construction

[0043] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0044] figure 1 For the structural diagram of the electronic computer X-ray tomography (CT) system that the present invention proposes, as figure 1 As shown, the system includes: X-ray source 101, collimator 102, turntable 103, detector 104 and processor 105; wherein,

[0045] The X-ray source 101 includes a focal spot 1011 with a certain length for emitting X-rays and a ray outlet 1012 for emitting X-rays, where the focal spot 1011 can be linear and its length is more than 1 mm, for example, 6 mm. The collimator 102 includes a shielding part 1021 and a transmission part 1022; the turntable 103 includes the center of the turntable; the upper surface of the turntable 103 carries the object 106 to be measured, and th...

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Abstract

The invention relates to a system and a method for scanning an X-ray faultage by an electronic computer. The system comprises an X-ray source, a collimator, a turntable, a detector and a processor, wherein an X-ray source comprises focal spots with certain lengths and a ray outlet; the collimator comprises a shielding part and a transmitting part; a tested object is loaded at the upper surface of the turntable; a center shaft of the turntable passes through the center of the turntable; the detector comprises more than one detection unit which is arranged in a straight line; the collimator is arranged between the ray outlet and the tested object; the shielding part has shielding effect on the X ray emitted by a part of focal spots; the transmitting part has transmitting effect on the X ray emitted by another part of focal spots; each detection unit is connected with the processor; and a count value which is in direct proportion to the strength of the received X ray is transmitted to the processor as projection data; and a computerized tomography (CT) image of the tested object is built according to an adsorption parameter of the collimator and each projection data. The space resolution of the CT system can be improved by the invention.

Description

technical field [0001] The invention relates to the technical field of computerized X-ray tomography, in particular to a computerized X-ray tomography system and method. Background technique [0002] The spatial resolution of computer X-ray tomography (CT) images is an important performance index of the CT system. Wait for the decision. According to the definition of the effective beam (BW, Beam Width) in the United States ASTME 1441 (American Society of Tool Manufacturing Engineers), the relationship between BW and hardware parameters is [0003] BW = d 2 + [ a ( M - 1 ) ] 2 / M [0004] Wherein, d is the diameter of the detection unit, a is th...

Claims

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Application Information

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IPC IPC(8): G01N23/04
Inventor 张朋朱溢佞张慧滔
Owner CAPITAL NORMAL UNIVERSITY
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