Optimization for limited angle tomography in medical image processing

doi:10.1016/j.patcog.2010.12.016

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	Optimization for limited angle tomography in medical image processing
	Lu, Xiaoqiang 2; Sun, Yi 2; Yuan, Yuan1
作者部门	光学影像分析与学习中心
	2011-10-01
发表期刊	PATTERN RECOGNITION
ISSN	0031-3203
卷号	44 期号:10-11 页码:2427-2435
摘要	This paper aims to reduce the problems of incomplete data in computed tomography, which happens frequently in medical image process and analysis, e.g., when the high-density region of objects can only be penetrated by X-rays at a limited angular range. As the projection data are available only in an angular range, the incomplete data problem can be attributed to the limited angle problem, which is an ill-posed inverse problem. Image reconstruction based on total variation (TV) reduces the problem and gives better performance on edge-preserving reconstruction: however, the artificial parameter can only be determined through considerable experimentation. In this paper, an effective TV objective function is proposed to reduce the inverse problem in the limited angle tomography. This novel objective function provides a robust and effective reconstruction without any artificial parameter in the iterative processes, using the TV as a multiplicative constraint. The results demonstrate that this reconstruction strategy outperforms some previous ones. (C) 2011 Published by Elsevier Ltd.
文章类型	Article
关键词	Limited Angle Tomography Ill-posed Inverse Problem Total Variation (Tv)
WOS标题词	Science & Technology ; Technology
DOI	10.1016/j.patcog.2010.12.016
收录类别	SCI ; EI
关键词[WOS]	EXTERIOR RADON-TRANSFORM ; X-RAY TOMOGRAPHY ; COMPUTED-TOMOGRAPHY ; STATISTICAL INVERSION ; INCOMPLETE DATA ; BEAM CT ; RECONSTRUCTION ; RADIOGRAPHS ; PROJECTIONS ; ALGORITHMS
语种	英语
WOS研究方向	Computer Science ; Engineering
WOS类目	Computer Science, Artificial Intelligence ; Engineering, Electrical & Electronic
WOS记录号	WOS:000292849000020
引用统计	被引频次：30[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.opt.ac.cn/handle/181661/10569
专题	光谱成像技术研究室
作者单位	1.Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Ctr OPT IMagery Anal & Learning OPTIMAL, Xian 710119, Shaanxi, Peoples R China 2.Dalian Univ Technol, Dept Elect Engn, Sch Elect & Informat Engn, Dalian, Peoples R China
推荐引用方式 GB/T 7714	Lu, Xiaoqiang,Sun, Yi,Yuan, Yuan. Optimization for limited angle tomography in medical image processing[J]. PATTERN RECOGNITION,2011,44(10-11):2427-2435.
APA	Lu, Xiaoqiang,Sun, Yi,&Yuan, Yuan.(2011).Optimization for limited angle tomography in medical image processing.PATTERN RECOGNITION,44(10-11),2427-2435.
MLA	Lu, Xiaoqiang,et al."Optimization for limited angle tomography in medical image processing".PATTERN RECOGNITION 44.10-11(2011):2427-2435.

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