A method of reconstruction for X-ray phase contrast imaging with arbitrary Fresnel number

2018/03/23 by Palamodov, Victor
#78A45 78A46 #FOS: Mathematics #Numerical Analysis (math.NA)

paper · doi:10.48550/arxiv.1803.08938

Abstract

New lensless diffractive X-ray technic for micro-scale imaging of biological tissue is based on quantitative phase retrieval schemes. By incorporating refraction, this method yields improved contrast compared to purely absorption-based radiography but involves a phase retrieval problem since of physical limitation of detectors. A general method is proposed in this paper for one step reconstruction of the ray integral of complex refractive index of an optically weak object from intensity distribution of the hologram.

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