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Proceedings Paper

A study on projection distribution of few-view reconstruction with total variation constraint
Author(s): Li Zhang; Xinhui Duan; Yuxiang Xing; Zhiqiang Chen; Jianping Cheng
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Paper Abstract

In today's tomographic imaging, there are more incomplete data systems, such as few-view system. The advantage of few-view tomography is less x-ray dose and reduced scanning time. In this work, we study the projection distribution in few-view fan-beam imaging. It is one of the fundamental problems in few-view imaging because of its severe lack of projection data. The aim is to reduce data redundancy and to improve the quality of reconstructed images by research on projection distribution schemes. The reconstruction algorithm for few-view imaging is based on algebraic reconstruction techniques (ART) and total variation (TV) constraint approached by E. Sidky et al in 2006. Study of few-view fan-beam projection distribution is performed mainly through comparison of several distribution types in projection space and reconstructed images. Results show that the distribution called short-scan type obtains the best image in five typical distributions.

Paper Details

Date Published: 18 March 2008
PDF: 8 pages
Proc. SPIE 6913, Medical Imaging 2008: Physics of Medical Imaging, 69132W (18 March 2008); doi: 10.1117/12.769779
Show Author Affiliations
Li Zhang, Tsinghua Univ. (China)
Xinhui Duan, Tsinghua Univ. (China)
Yuxiang Xing, Tsinghua Univ. (China)
Zhiqiang Chen, Tsinghua Univ. (China)
Jianping Cheng, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 6913:
Medical Imaging 2008: Physics of Medical Imaging
Jiang Hsieh; Ehsan Samei, Editor(s)

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