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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 |
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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 |
Downloads: | 0 |
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