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	A study on projection distribution of few-view reconstruction with total variation constraint - art. no. 69132W
	Zhang, Li ; Duan, Xinhui ; Xing, Yuxiang ; Chen, Zhiqiang ; Cheng, Jianping
	2010-05-10 ; 2010-05-10
会议名称	MEDICAL IMAGING 2008: PHYSICS OF MEDICAL IMAGING, PTS 1-3 ; Medical Imaging 2008 Conference ; San Diego, CA ; Web of Science
关键词	few-view imaging projection distribution computed tomography total variation Engineering, Biomedical Physics, Applied Imaging Science & Photographic Technology Radiology, Nuclear Medicine & Medical Imaging
中文摘要	In today's tomographic imaging, there are more incomplete data systems, such as few-view system. The advantage of few-view tomography is less x-ray dose and reduced scanning time. In this work, we study the projection distribution in few-view fan-beam imaging. It is one of the fundamental problems in few-view imaging because of its severe lack of projection data. The aim is to reduce data redundancy and to improve the quality of reconstructed images by research on projection distribution schemes. The reconstruction algorithm for few-view imaging is based on algebraic reconstruction techniques (ART) and total variation (TV) constraint approached by E. Sidky .et al in 2006. Study of few-view fan-beam projection distribution is performed mainly through comparison of several distribution types in projection space and reconstructed images. Results show that the distribution called short-scan type obtains the best image in five typical distributions.
会议录出版者	SPIE-INT SOC OPTICAL ENGINEERING ; BELLINGHAM ; 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/18659]
专题	清华大学
推荐引用方式 GB/T 7714	Zhang, Li,Duan, Xinhui,Xing, Yuxiang,et al. A study on projection distribution of few-view reconstruction with total variation constraint - art. no. 69132W[C]. 见:MEDICAL IMAGING 2008: PHYSICS OF MEDICAL IMAGING, PTS 1-3, Medical Imaging 2008 Conference, San Diego, CA, Web of Science.

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