Optimization for limited angle tomography in medical image processing

CORC > 西安光学精密机械研究所 > 中国科学院西安光学精密机械研究所 > 光学影像学习与分析中心

	Optimization for limited angle tomography in medical image processing
	Lu, Xiaoqiang 2; Sun, Yi 2; Yuan, Yuan1
刊名	pattern recognition
	2011-10-01
卷号	44 期号:10-11 页码:2427-2435
关键词	Limited angle tomography Ill-posed inverse problem Total variation (TV)
ISSN号	0031-3203
英文摘要	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.
WOS标题词	science & technology ; technology
类目[WOS]	computer science, artificial intelligence ; engineering, electrical & electronic
研究领域[WOS]	computer science ; engineering
关键词[WOS]	exterior radon-transform ; x-ray tomography ; computed-tomography ; statistical inversion ; incomplete data ; beam ct ; reconstruction ; radiographs ; projections ; algorithms
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000292849000020
公开日期	2011-09-30
内容类型	期刊论文
源URL	[http://ir.opt.ac.cn/handle/181661/10569]
专题	西安光学精密机械研究所_光学影像学习与分析中心
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.