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	Quantitative grating-based x-ray dark-field computed tomography
	Wang, Zhen-Tian ; Kang, Ke-Jun ; Huang, Zhi-Feng ; Chen, Zhi-Qiang
	2010-10-12 ; 2010-10-12
关键词	MULTIPLE-IMAGE RADIOGRAPHY TALBOT INTERFEROMETRY Physics, Applied
中文摘要	Grating-based x-ray dark-field computed tomography is a functional method that utilizes the scattering contrast mechanism to explore the inaccessible spatially resolved internal structure of the sample. In this letter, we show that the second moment of the scattering angle distribution can be expressed as the minus logarithm of the visibility degradation of the oscillation curve in grating-based imaging. According to the conclusion of Khelashvili et al. [Phys. Med. Biol. 51, 221 (2006)], the minus logarithm of the visibility ratio fulfills the line integral condition; consequently the scattering information can be reconstructed quantitatively by conventional computed tomography algorithms. Results from a computer simulation and from an actual experiment both validate our deduction. c 2009 American Institute of Physics. [DOI: 10.1063/1.3213557]
语种	英语 ; 英语
出版者	AMER INST PHYSICS ; MELVILLE ; CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/78891]
专题	清华大学
推荐引用方式 GB/T 7714	Wang, Zhen-Tian,Kang, Ke-Jun,Huang, Zhi-Feng,et al. Quantitative grating-based x-ray dark-field computed tomography[J],2010, 2010.
APA	Wang, Zhen-Tian,Kang, Ke-Jun,Huang, Zhi-Feng,&Chen, Zhi-Qiang.(2010).Quantitative grating-based x-ray dark-field computed tomography..
MLA	Wang, Zhen-Tian,et al."Quantitative grating-based x-ray dark-field computed tomography".(2010).

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