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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 17 — Aug. 18, 2008
  • pp: 13330–13341

An attenuation-partition based iterative phase retrieval algorithm for in-line phase-contrast imaging

Aimin Yan, Xizeng Wu, and Hong Liu  »View Author Affiliations


Optics Express, Vol. 16, Issue 17, pp. 13330-13341 (2008)
http://dx.doi.org/10.1364/OE.16.013330


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Abstract

For medical applications of the in-line phase-contrast x-ray imaging, phase retrieval is a crucial step for quantitative imaging such as reconstructing the 3-D distribution of tissue linear attenuation coefficients and refraction indices. The conventional phase retrieval algorithms, such as the transport of intensity equation (TIE) based algorithms, are not robust against the quantum noise that appears in acquired images due to the radiation dose constraints in medical imaging. In this work a new attenuation-partition based iterative phase retrieval algorithm is proposed. This new algorithm takes advantage of the correlation between the attenuation and phase-shift, and is much robust against noise in acquired images. Phase retrieval results from experimental images show that this new iterative algorithm is fast and robust, and it has good potential for medical x-ray imaging applications.

© 2008 Optical Society of America

OCIS Codes
(030.1670) Coherence and statistical optics : Coherent optical effects
(340.7440) X-ray optics : X-ray imaging

ToC Category:
X-ray Optics

History
Original Manuscript: June 2, 2008
Revised Manuscript: July 31, 2008
Manuscript Accepted: August 5, 2008
Published: August 14, 2008

Virtual Issues
Vol. 3, Iss. 10 Virtual Journal for Biomedical Optics

Citation
Aimin Yan, Xizeng Wu, and Hong Liu, "An attenuation-partition based iterative phase retrieval algorithm for in-line phase-contrast imaging," Opt. Express 16, 13330-13341 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-17-13330


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