Article

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

Optics Express (Impact Factor: 3.55). 07/2004; 12(13):2960-5. DOI: 10.1364/OPEX.12.002960
Source: PubMed

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.

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