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Method and system for recognizing pseudo-dual-energy under-sampling substance

An under-sampling and pseudo-dual energy technology, applied in the field of radiation imaging, can solve the problems of high cost and difficult popularization, and achieve the effects of reducing system cost, improving recognition speed, and high market application potential

Active Publication Date: 2012-06-27
TSINGHUA UNIV +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, since the pseudo dual-energy system requires two layers of detectors to collect simultaneously, the cost is very expensive compared to the one-layer detector of the true dual-energy system, and it is not easy to popularize

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  • Method and system for recognizing pseudo-dual-energy under-sampling substance
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  • Method and system for recognizing pseudo-dual-energy under-sampling substance

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Embodiment Construction

[0044] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components, although shown in different drawings. For clarity and conciseness, detailed descriptions of known functions and constructions incorporated herein will be omitted since they would otherwise obscure the subject matter of the present invention.

[0045] The pseudo-dual-energy undersampling substance identification system according to the embodiment of the present invention is a system and method using a CT image-based dual-energy projection undersampling substance identification method, such as Figure 3A with 5 As shown, it uses the projection data scanned by the first layer of detectors to reconstruct the CT image of the detected object, and uses the region image segmentation method to segment and mark the tomographic image according to the a...

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Abstract

The invention discloses a method and a system for recognizing a pseudo-dual-energy under-sampling substance. According to the system, a double-energy projection under-sampling substance recognition method based on CT (Computed Tomography) images is utilized, a small quantity of detectors are only used in a second detector layer to carry out double-energy data sampling, the part for solving an equation set, in the method, is optimized, and thus, the low-cost and high-speed double-energy substance recognition imaging is effectively realized. The method and the system have the potentials in the fields of safety check, nondestructive examination, medical diagnosis and the like.

Description

[0001] This application is a divisional application of the No. 200910085924.5 invention patent application titled "Pseudo-Dual Energy Undersampling Substance Identification System and Method" submitted to the China Patent Office on May 27, 2009. technical field [0002] The invention relates to the technical field of radiation imaging, in particular to a pseudo-dual-energy undersampling material identification system and an optimization method, which can perform the imaging process in material identification quickly and at low cost, saving time and cost for security inspection and other fields. Background technique [0003] In recent years, due to the fact that dual-energy CT imaging technology can obtain the best detection accuracy, effectively reconstruct the detected object and carry out material identification, it has very important significance in the fields of safety inspection, non-destructive testing, medical diagnosis and so on. [0004] At present, there are two mai...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/04
Inventor 张丽陈志强刘圆圆邢宇翔赵自然
Owner TSINGHUA UNIV