Adjacent dual-X-ray source CT imaging system and application thereof

A CT imaging and system application technology, applied in computed tomography scanners, echo tomography, etc., can solve problems such as eliminating motion artifacts, increasing cardiac imaging radiation dose, and ineffective use of X-ray projection data.

Inactive Publication Date: 2015-04-29
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The problem with this gating technique is that some of the X-ray projection data is not used effectively, greatly increasing the radiati

Method used

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  • Adjacent dual-X-ray source CT imaging system and application thereof
  • Adjacent dual-X-ray source CT imaging system and application thereof
  • Adjacent dual-X-ray source CT imaging system and application thereof

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Embodiment 1

[0047] Such as figure 2 As shown, an adjacent double X-ray source CT imaging system includes an X light source and a detector; the X light sources are adjacent double X light sources S1 and S2, and the adjacent double X light sources are directly opposite to the detector set up.

[0048] The photon doses emitted by the adjacent double X light sources are the same.

[0049] The adjacent double X light sources are parallel to the rotation plane.

[0050] The X light source is an X-ray light source;

[0051] The center of the detector is located at the center of rotation;

[0052] The rotation center refers to the center where adjacent double X light sources and detectors rotate synchronously.

[0053] The detector is an arc detector.

[0054] A separation and reconstruction algorithm for processing projection images obtained by the above-mentioned adjacent dual X-ray source CT imaging system comprises the following steps:

[0055] (1) Assume that the Nth projection under ...

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Abstract

The invention belongs to the technical field of CT imaging systems, and particularly discloses an adjacent dual X-ray source CT imaging system and application thereof. The adjacent dual X-ray source CT imaging system comprises X light sources and a detector; the X light sources are adjacent dual X light sources; and the adjacent dual X light sources and the detector are oppositely arranged. The doses of photons emitted by the adjacent dual X light sources are the same. The adjacent dual X light sources are parallel to a rotation panel. According to the adjacent dual X-ray source CT imaging system, the adjacent dual X light sources work at the same time; on one hand, the operating power of the light sources can be reduced, so that the service life of a ray tube is accordingly prolonged; on the other hand, motion artifact of images can be effectively reduced. The adjacent dual X-ray source CT imaging system is low in implementation cost; and large structure improvements on an existing CT device are not needed. The adjacent dual X-ray source CT imaging system can be applied to the medical treatment CT or the industrial CT with the large radiation exposure dose.

Description

【Technical field】 [0001] The invention belongs to the technical field of CT imaging, and in particular relates to a CT imaging system with adjacent double X-ray sources and its application. 【Background technique】 [0002] Since Hounsfield invented the first CT machine in 1972, CT technology has had a revolutionary impact on medical diagnosis and industrial non-destructive testing. CT has become one of the important detection methods in medical, biological, aerospace, defense and other industries. [0003] In 2005, Siemens launched the world's first dual-source CT (DSCT) system - SOMATOM Definition at the Radiology Congress of North America (RSNA). Based on the mature SOMATOM Sensation64 technology and Straton zero mega metal tube, Two sets of 64-layer image data acquisition systems are integrated in the frame so that a high-quality image can be obtained after the entire frame is rotated by 90°. It takes 0.33s for the gantry to rotate a circle, but the image acquisition can ...

Claims

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Application Information

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IPC IPC(8): A61B6/03
Inventor 安谋张翠李荣茂谢耀钦
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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