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Title: Combined analyser-based and propagation-based phase-contrast imaging of weak objects
Contributor(s): Nesterets, Yakov  (author); Gureyev, Timur  (author)orcid ; Pavlov, Konstantin M  (author)orcid ; Paganin, David (author); Wilkins, S W (author)
Publication Date: 2006
DOI: 10.1016/j.optcom.2005.08.055
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Abstract: A new theoretical method combining analyser-based and propagation-based hard X-ray phase-contrast imaging is investigated. Unlike the previous theoretical model of the combined imaging method constructed under the assumption of slow variation of the individual transfer functions (large Fresnel numbers), a new model proposed in this paper uses the assumption of a weak scatterer (analogous to the first Born approximation). Consequently, the results are not limited to the case of short propagation distances or low-resolution imaging. An explicit expression for the combined transfer function is derived and analytical and numerical examples solving related inverse imaging problems are presented.
Publication Type: Journal Article
Source of Publication: Optics Communications, 259(1), p. 19-31
Publisher: Elsevier BV
Place of Publication: Amsterdam, The Netherlands
ISSN: 0030-4018
Field of Research (FOR): 020504 Photonics, Optoelectronics and Optical Communications
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
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