Refraction angle extracting strategy for fan-beam differential phase contrast CT

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

	Refraction angle extracting strategy for fan-beam differential phase contrast CT
	Ye, Renzhen 1; Tang, Yi 2; Lu, Xiaoqiang3
刊名	neurocomputing
	2014-10-02
卷号	141 期号:si 页码:160-169
关键词	Phase-contrast image X-ray imaging Fan-beam CT PI-line Gratings interferometer
ISSN号	0925-2312
英文摘要	in this paper, the fan-beam differential phase contrast computed tomography (dpc-ct) reconstruction method is studied. we first present a new vision of how to implement the reverse-projection (rp) method to extract the refraction-angle data efficiently in fan-beam geometry, and then provide a katsevich-type formula for fan-beam dpc-ct reconstruction. the proposed method has two key properties. first, it is essentially a filtered back projection (fbp) reconstruction formula. second, it can deal with incomplete data sets. the main contributions of this paper lie in the following three aspects: first, the physical principle of the bent-grating based fan-beam dpc imaging is discussed and the rp-method is extended to the fan-beam case. second, an implementation strategy of katsevich algorithm for fan-beam dpc-ct is proposed. third, a semi-quantitative research on the influence of the approximation errors introduced by the rp-method is carried out by using several numerical simulations. it should be pointed out that the rp-method will certainly introduce some errors. the effect of these errors on our reconstruction algorithm is discussed by several numerical simulations. (c) 2014 elsevier b.v. all rights reserved.
WOS标题词	science & technology ; technology
类目[WOS]	computer science, artificial intelligence
研究领域[WOS]	computer science
关键词[WOS]	truncated hilbert transform ; hard x-rays ; image-reconstruction ; computed-tomography ; grating interferometer ; inversion algorithm ; minimum data ; retrieval
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000338403800018
公开日期	2015-03-18
内容类型	期刊论文
源URL	[http://ir.opt.ac.cn/handle/181661/22396]
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.Huazhong Agr Univ, Coll Sci, Wuhan 430074, Hubei, Peoples R China 2.Yunnan Univ Nationalities, Sch Math & Comp Sci, Kunming 650500, Yunnan, Peoples R China 3.Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Ctr OPT IMagery Anal & Learning, Xian 710119, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Ye, Renzhen,Tang, Yi,Lu, Xiaoqiang. Refraction angle extracting strategy for fan-beam differential phase contrast CT[J]. neurocomputing,2014,141(si):160-169.
APA	Ye, Renzhen,Tang, Yi,&Lu, Xiaoqiang.(2014).Refraction angle extracting strategy for fan-beam differential phase contrast CT.neurocomputing,141(si),160-169.
MLA	Ye, Renzhen,et al."Refraction angle extracting strategy for fan-beam differential phase contrast CT".neurocomputing 141.si(2014):160-169.