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Proceedings Paper

An examination of phase retrieval algorithms as applied to phase contrast tomography using laboratory sources
Author(s): Robert S. Bradley; Andrew McNeil; Philip J. Withers
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Paper Abstract

Many objects relevant to materials science, biology and medicine are weakly absorbing to the hard energy x rays typically produced by laboratory sources. However, these samples can produce significant shifts in the phase of the x rays, which can be exploited using in-line phase contrast. This paper describes the work carried out to optimize phase contrast tomography using a polychromatic laboratory source. A variety of different phase retrieval algorithms are compared for two samples, one of uniformly low absorption contrast, the other comprising soft and hard materials, with a view to establishing basic guidelines for laboratory phase contrast tomography.

Paper Details

Date Published: 2 September 2010
PDF: 10 pages
Proc. SPIE 7804, Developments in X-Ray Tomography VII, 780404 (2 September 2010); doi: 10.1117/12.860536
Show Author Affiliations
Robert S. Bradley, The Univ. of Manchester (United Kingdom)
Andrew McNeil, The Univ. of Manchester (United Kingdom)
Philip J. Withers, The Univ. of Manchester (United Kingdom)

Published in SPIE Proceedings Vol. 7804:
Developments in X-Ray Tomography VII
Stuart R. Stock, Editor(s)

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