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A simplified approach to quantitative coded aperture X-ray phase imaging

Munro, PRT; Hagen, CK; Szafraniec, MB; Olivo, A; (2013) A simplified approach to quantitative coded aperture X-ray phase imaging. OPTICS EXPRESS , 21 (9) 11187 - 11201. 10.1364/OE.21.011187. Green open access

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Abstract

We recently demonstrated how quantitative X-ray phase contrast imaging may be performed with laboratory sources using the coded aperture technique. This technique required the knowledge of system parameters such as, for example, the source focal spot size and distances between elements of the imaging system. The method also assumes that the absorbing regions of the apertures are perfectly absorbing. In this paper we demonstrate how quantitative imaging can be performed without knowledge of individual system parameters and with partially absorbing apertures. We also show that this method is analogous to that employed in analyser based imaging which uses the rocking curve of an analyser crystal.

Type: Article
Title: A simplified approach to quantitative coded aperture X-ray phase imaging
Open access status: An open access version is available from UCL Discovery
DOI: 10.1364/OE.21.011187
Publisher version: http://dx.doi.org/10.1364/OE.21.011187
Language: English
Additional information: © 2013 OSA. This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/OE.21.011187. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law. PubMed ID: 23669976
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/1392311
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