Combined analyser-based and propagation-based phase-contrast imaging of weak objects

Nesterets, Yakov; Gureyev, Timur; Pavlov, Konstantin M; Paganin, David; Wilkins, S W

doi:10.1016/j.optcom.2005.08.055

Author(s)

Nesterets, Yakov

Gureyev, Timur

Pavlov, Konstantin M

Paganin, David

Wilkins, S W

Publication Date

2006

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.

Citation

Optics Communications, 259(1), p. 19-31

ISSN

1873-0310

0030-4018

Link

https://hdl.handle.net/1959.11/3474

Language

en

Publisher

Elsevier BV

Title

Combined analyser-based and propagation-based phase-contrast imaging of weak objects

Type of document

Journal Article

Entity Type

Publication

Author(s)	Nesterets, Yakov Gureyev, Timur Pavlov, Konstantin M Paganin, David Wilkins, S W
Publication Date	2006
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.
Citation	Optics Communications, 259(1), p. 19-31
ISSN	1873-0310 0030-4018
Link	https://hdl.handle.net/1959.11/3474
Language	en
Publisher	Elsevier BV
Title	Combined analyser-based and propagation-based phase-contrast imaging of weak objects
Type of document	Journal Article
Entity Type	Publication

Combined analyser-based and propagation-based phase-contrast imaging of weak objects

Files: