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

Optics Express
Aimin YanHong Liu

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.

References

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Oct 8, 2003·Medical Physics·Edwin F DonnellyDavid R Pickens
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Mar 15, 2005·Optics Letters·Xizeng WuAimin Yan
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Aug 2, 2008·Applied Optics·Xizeng Wu, Hong Liu

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Citations

May 29, 2014·Journal of X-ray Science and Technology·Molly Donovan WongHong Liu
Sep 14, 2010·Medical Physics·Liberato De CaroRoberto Bellotti
Aug 10, 2013·Medical Physics·Jeffrey C HammondsEdwin F Donnelly
Jun 21, 2011·Tissue Engineering. Part B, Reviews·Alyssa AppelEric M Brey
Jun 25, 2009·Optics Express·Xizeng Wu, Aimin Yan
Jul 31, 2013·Journal of Instrumentation : an IOP and SISSA Journal·A YanH Liu
Jan 23, 2009·Optics Express·Wooshik Kim, Namhyun Kim

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