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	Differential phase-contrast interior tomography
	Cong, Wenxiang ; Yang, Jiangsheng ; Wang, Ge
	2012
关键词	RAY TALBOT INTERFEROMETRY IMAGE-RECONSTRUCTION HILBERT TRANSFORM
英文摘要	Differential phase-contrast interior tomography allows reconstruction of a refractive index distribution over a region of interest (ROI) for visualization and analysis of structures inside a large biological specimen. In the imaging mode, x-ray scanning only targets an ROI in an object and a narrow beam passes through the object, allowing a significant reduction of both radiation dose and system cost. Inspired by recently developed compressive sensing theory, in a numerical analysis framework we show that accurate interior reconstruction can be achieved on an ROI from truncated differential projection data through the ROI via the total variation minimization, assuming a piecewise constant distribution of the refractive indices in the ROI. Then, we develop a practical iterative algorithm for such an interior reconstruction and perform numerical experiments to demonstrate the feasibility of the proposed approach.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000303677900007&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Engineering, Biomedical; Radiology, Nuclear Medicine & Medical Imaging; SCI(E); EI; 13; ARTICLE; 10; 2905-2914; 57
语种	英语
出处	EI ; SCI
出版者	物理学在医学与生物学中应用
内容类型	其他
源URL	[http://hdl.handle.net/20.500.11897/393372]
专题	数学科学学院
推荐引用方式 GB/T 7714	Cong, Wenxiang,Yang, Jiangsheng,Wang, Ge. Differential phase-contrast interior tomography. 2012-01-01.

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