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Proceedings Paper

Improved reverse projection method for large refraction angle in grating-based x-ray phase contrast imaging
Author(s): Wenbin Wei; Zhao Wu; Chenxi Wei; Yue Hu; Gang Liu; Yangchao Tian
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Paper Abstract

Grating-based x-ray phase contrast imaging has attracted significant attentions in the past years due to its capability in achieving x-ray phase contrast imaging with low brilliance source. The reverse projection (RP) method is a novel fast and low dose information extraction approach, which bases on the linear approximation of the shifting curve around its half-slope. However, when the refraction angle is beyond the linear range of the shifting curve, the extracted information is no longer credible. In this paper, we present an improved retrieval method by calculating an inverse function. Compared with the original retrieval method, our method does not rely on the first order approximation, and thus is suitable for large refraction angle. Theoretical derivations and numerical simulations are performed to confirm the accuracy of the method.

Paper Details

Date Published: 8 March 2017
PDF: 7 pages
Proc. SPIE 10255, Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016, 102551O (8 March 2017); doi: 10.1117/12.2268413
Show Author Affiliations
Wenbin Wei, Univ. of Science and Technology of China (China)
Zhao Wu, Univ. of Science and Technology of China (China)
Chenxi Wei, Univ. of Science and Technology of China (China)
Yue Hu, Univ. of Science and Technology of China (China)
Gang Liu, Univ. of Science and Technology of China (China)
Yangchao Tian, Univ. of Science and Technology of China (China)


Published in SPIE Proceedings Vol. 10255:
Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016
Yueguang Lv; Jialing Le; Hesheng Chen; Jianyu Wang; Jianda Shao, Editor(s)

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