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Title: Tomographic reconstruction using tilted Laue analyser-based X-ray phase-contrast imaging
Contributor(s): Chalmers, M C (author); Kitchen, M J (author); Uesugi, K (author); Falzon, G  (author)orcid ; Quin, P  (author); Pavlov, K M  (author)orcid 
Publication Date: 2021
DOI: 10.1107/S1600577520013995
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Analyser-based phase-contrast imaging (ABPCI) is a highly sensitive phase-contrast imaging method that produces high-contrast images of weakly absorbing materials. However, it is only sensitive to phase gradient components lying in the diffraction plane of the analyser crystal [i.e. in one dimension (1-D)]. In order to accurately account for and measure phase effects produced by the wavefield-sample interaction, ABPCI and other 1-D phase-sensitive methods must achieve 2-D phase gradient sensitivity. An inclined geometry method was applied to a Laue geometry setup for X-ray ABPCI through rotation of the detector and object about the optical axis. This allowed this traditionally 1-D phase-sensitive phase-contrast method to possess 2-D phase gradient sensitivity. Tomographic datasets were acquired over 360° of a multi-material phantom with the detector and sample tilted by 8°. The real and imaginary parts of the refractive index were reconstructed for the phantom.

Publication Type: Journal Article
Source of Publication: Journal of synchrotron radiation, 28(1), p. 283-291
Publisher: Wiley-Blackwell Publishing Ltd
Place of Publication: United Kingdom
ISSN: 1600-5775
Fields of Research (FoR) 2020: 3002 Agriculture, land and farm management
Socio-Economic Objective (SEO) 2020: tbd
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
Appears in Collections:Journal Article
School of Environmental and Rural Science
School of Science and Technology

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