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Tomographic reconstruction using tilted Laue analyser-based X-ray phase-contrast imaging

Citation

Chalmers, MC and Kitchen, MJ and Uesugi, K and Falzon, G and Quin, P and Pavlov, KM, Tomographic reconstruction using tilted Laue analyser-based X-ray phase-contrast imaging, Journal of Synchrotron Radiation, 28 pp. 283-291. ISSN 0909-0495 (2021) [Refereed Article]

Copyright Statement

Copyright 2021 International Union of Crystallography

DOI: doi:10.1107/S1600577520013995

Abstract

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.

Item Details

Item Type:Refereed Article
Keywords:phase-contrast imaging, phase-contrast tomography, analyser-based imaging, phase retrieval
Research Division:Physical Sciences
Research Group:Synchrotrons and accelerators
Research Field:Synchrotrons
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:Quin, P (Mr Peter Quin)
ID Code:147296
Year Published:2021
Deposited By:TIA - Research Institute
Deposited On:2021-10-25
Last Modified:2021-12-01
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