Local tomography based on grey model

doi:10.1016/j.neucom.2012.06.006

OPT OpenIR > 光谱成像技术研究室

	Local tomography based on grey model
	Ye, Renzhen 2; Lu, Xiaoqiang1 ; Liu, Haihua
	2013-02-04
发表期刊	NEUROCOMPUTING
卷号	101 页码:10-17
摘要	This paper studied region-of-interest (ROI) problem of computed tomography. It is necessary to use almost local projection data to reduce radiation exposure or time in medical imaging when only a small part of the patient's body needs to be viewed. Improving the quality of reconstructed ROI and reducing radiation exposure are our aims. However, the traditional local tomography algorithm has difficulty in reconstructing the ROI due to significant truncation artifacts. In this paper, a new grey model based method is reported for ROI image reconstruction from truncated projection data. By using grey model, the proposed method can extrapolate the truncated projection data, and reconstruct the ROI from a set of its projections. As a result, about 75% of full projection data are saved, as compared with other traditional approachs, in reconstructing a local region of 32 pixels in radius in an image of 256 x 256 pixels. Experimental results show that the proposed method exhibits more saving in exposure as compared with other local tomography algorithms and results in better quality of the reconstructed image. (C) 2012 Elsevier B.V. All rights reserved.
文章类型	Article
关键词	Computed Tomography Region Of Interest (Roi) Grey Model Filter Matrices Wavelet
WOS标题词	Science & Technology ; Technology
DOI	10.1016/j.neucom.2012.06.006
收录类别	SCI ; EI
关键词[WOS]	OF-INTEREST TOMOGRAPHY ; RADON-TRANSFORM ; IMAGE-RECONSTRUCTION ; REGION ; PROJECTIONS
语种	英语
WOS研究方向	Computer Science
WOS类目	Computer Science, Artificial Intelligence
WOS记录号	WOS:000312171100002
引用统计	被引频次：5[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/181661/23437
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.Huazhong Agr Univ, Coll Sci, Wuhan 430074, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Ye, Renzhen,Lu, Xiaoqiang,Liu, Haihua. Local tomography based on grey model[J]. NEUROCOMPUTING,2013,101:10-17.
APA	Ye, Renzhen,Lu, Xiaoqiang,&Liu, Haihua.(2013).Local tomography based on grey model.NEUROCOMPUTING,101,10-17.
MLA	Ye, Renzhen,et al."Local tomography based on grey model".NEUROCOMPUTING 101(2013):10-17.

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