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Virtual Journal for Biomedical Optics

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  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 7, Iss. 2 — Feb. 1, 2012

Non-linear regularized phase retrieval for unidirectional X-ray differential phase contrast radiography

Thomas Thüring, Peter Modregger, Bernd R. Pinzer, Zhentian Wang, and Marco Stampanoni  »View Author Affiliations


Optics Express, Vol. 19, Issue 25, pp. 25545-25558 (2011)
http://dx.doi.org/10.1364/OE.19.025545


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Abstract

Phase retrieval from unidirectional radiographic differential phase contrast images requires integration of noisy data. A method is presented, which aims to suppress stripe artifacts arising from direct image integration. It is purely algorithmic and therefore, compared to alternative approaches, neither additional alignment nor an increased scan time is required. We report on the theory of this method and present results using numerical as well as experimental data. The method shows significant improvements on the phase retrieval accuracy and enhances contrast in the phase image. Due to its general applicability, the proposed method provides a valuable tool for various 2D imaging applications using differential data.

© 2011 OSA

OCIS Codes
(100.5070) Image processing : Phase retrieval
(110.7440) Imaging systems : X-ray imaging
(110.3010) Imaging systems : Image reconstruction techniques

ToC Category:
Image Processing

Virtual Issues
Vol. 7, Iss. 2 Virtual Journal for Biomedical Optics

Citation
Thomas Thüring, Peter Modregger, Bernd R. Pinzer, Zhentian Wang, and Marco Stampanoni, "Non-linear regularized phase retrieval for unidirectional X-ray differential phase contrast radiography," Opt. Express 19, 25545-25558 (2011)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=oe-19-25-25545


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