A phase retrieval algorithm for polychromatic x-ray in-line phase contrast imaging

Xue-jun Guo; Xiao-lin Liu; Mu Gu; Chen Ni; Bo Liu; Shi-ming Huang

doi:10.1117/12.917606

15 November 2011 A phase retrieval algorithm for polychromatic x-ray in-line phase contrast imaging

Xue-jun Guo, Xiao-lin Liu, Mu Gu, Chen Ni, Bo Liu, Shi-ming Huang

Proceedings Volume 8335, 2012 International Workshop on Image Processing and Optical Engineering; 833510 (2011) https://doi.org/10.1117/12.917606
Event: 2012 International Workshop on Image Processing and Optical Engineering, 2012, Harbin, China

Abstract

In-line phase contrast imaging using micro-focus x-ray source is an important diagnostic tool in medicine, biology and materials science. The phase retrieval enables us to obtain material information from the gray of the phase-contrast image. A phase retrieval algorithm based on phase-attenuation and Fourier-wavelet regularization was proposed, which only need one single projection image and can deal with the case of large Fresnel propagator corresponding to high spatial resolution imaging. And the energy response function of detector and x-ray spectral density distribution of source were considered in this algorithm. The effectiveness of the proposed approach was tested by experimental image of silica aerogel.

Citation Download Citation

Xue-jun Guo, Xiao-lin Liu, Mu Gu, Chen Ni, Bo Liu, and Shi-ming Huang "A phase retrieval algorithm for polychromatic x-ray in-line phase contrast imaging", Proc. SPIE 8335, 2012 International Workshop on Image Processing and Optical Engineering, 833510 (15 November 2011); https://doi.org/10.1117/12.917606

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