Distributed Light Source CT Image Reconstruction Method and System

A distributed light source, CT image technology, applied in the field of radiation imaging, can solve the problems of high mechanical strength, overlapping projection data, and spatial resolution, and achieve redundant overlapping, fast scanning speed, and high spatial resolution. Effect

Active Publication Date: 2021-08-31
TSINGHUA UNIV
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Problems solved by technology

[0002] In traditional CT, the object needs to be rotated during imaging, and slip rings are usually used, resulting in high noise and vibration. The mechanical strength requirements for X-ray machines, high-voltage modules, detectors and other components are high, and the scanning speed is not good enough. Meet the needs of use
[0003] In addition, the existing CT also has problems such as missing projection data angles, overlapping projection data, poor spatial resolution, and poor reconstruction effects.

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  • Distributed Light Source CT Image Reconstruction Method and System
  • Distributed Light Source CT Image Reconstruction Method and System
  • Distributed Light Source CT Image Reconstruction Method and System

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[0039] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0040] The present invention proposes a CT image reconstruction system with distributed light sources, including: N segments of linear distributed light sources for emitting rays; and N segments of linear distributed detectors for obtaining N segments of scanning projection data, where N≥2; , the distributed light source CT image reconstruction system acquires reconstructed images by using the N-segment scanning projection data.

[0041] Compared with traditional CT, this system adopts linear distributed light source and detector array, and when imaging, the object does not need to rotate. At the same time, the linear light source array and linear detector array are static, avoiding the use of slip rings, not only It redu...

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Abstract

The present invention provides a distributed light source CT image reconstruction method and system. The distributed light source CT image reconstruction system includes: N-segment linear distributed light sources for emitting rays; and N-segment linear distributed detectors for Acquire N segments of scanning projection data, N≥2; wherein, the distributed light source CT image reconstruction system uses the N segments of scanning projection data to obtain reconstructed images. The distributed light source CT image reconstruction method and system of the present invention have higher spatial resolution and imaging speed, and can obtain accurate object reconstruction images.

Description

technical field [0001] The invention belongs to the technical field of radiation imaging, and in particular relates to a distributed light source CT image reconstruction method and system. Background technique [0002] In traditional CT, the object needs to be rotated during imaging, and slip rings are usually used, resulting in high noise and vibration. The mechanical strength requirements for X-ray machines, high-voltage modules, detectors and other components are high, and the scanning speed is not good enough. To meet the needs of use. [0003] In addition, the existing CT also has problems such as missing projection data angles, overlapping projection data, poor spatial resolution, and poor reconstruction effects. Contents of the invention [0004] (1) Technical problems to be solved [0005] The present invention provides a distributed light source CT image reconstruction method and system to at least partly solve the above existing technical problems. [0006] (2...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B6/03
CPCA61B6/032A61B6/4014
Inventor 陈志强张丽高河伟邢宇翔张涛
Owner TSINGHUA UNIV
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