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Opt Express. 2004 Jun 28;12(13):2960-5.

X-ray phase imaging: Demonstration of extended conditions for homogeneous objects.

Abstract

We discuss contrast formation in a propagating x-ray beam. We consider the validity conditions for linear relations based on the transport-of-intensity equation (TIE) and on contrast transfer functions (CTFs). From a single diffracted image, we recover the thickness of a homogeneous object which has substantial absorption and a phase-shift of --0.37 radian.

PMID:
19483813
[PubMed]
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