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The effect of the spatial sampling rate on quantitative phase information extracted from planar and tomographic edge illumination x-ray phase contrast images

Hagen, CK; Diemoz, PC; Endrizzi, M; Olivo, A; (2014) The effect of the spatial sampling rate on quantitative phase information extracted from planar and tomographic edge illumination x-ray phase contrast images. J. Phys. D: Appl. Phys. , 47 (45) , Article 455401. 10.1088/0022-3727/47/45/455401. Green open access

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Abstract

The effect of the spatial sampling rate on the quantitative phase information that can be retrieved from planar and tomographic edge illumination (EI) x-ray phase contrast imaging (XPCi) with a laboratory-based prototype scanner is analysed. The study is conducted on simulated and experimental data from a custom-built phantom. Optimal sampling rates, i.e. the minimum ones allowing the unambiguous extraction of quantitative phase measurements from the acquired data, are identified for planar and tomographic imaging. One of the key outcomes of this study is the demonstration that the optimal sampling rate in tomographic EI XPCi is low, allowing the implementation of low-dose volumetric imaging without having to compromise on quantitative accuracy.

Type: Article
Title: The effect of the spatial sampling rate on quantitative phase information extracted from planar and tomographic edge illumination x-ray phase contrast images
Location: UK
Open access status: An open access version is available from UCL Discovery
DOI: 10.1088/0022-3727/47/45/455401
Publisher version: http://dx.doi.org/10.1088/0022-3727/47/45/455401
Language: English
Additional information: This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Keywords: tomography, x-ray imaging, phase contrast
UCL classification: UCL
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/1454063
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