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Retrieval of weak x-ray scattering using edge illumination

Maughan Jones, C; Vittoria, FA; Olivo, A; Endrizzi, M; Munro, PRT; (2018) Retrieval of weak x-ray scattering using edge illumination. [Letter]. Optics Letters , 43 (16) pp. 3874-3877. 10.1364/OL.43.003874. Green open access

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Abstract

X-ray phase contrast imaging provides additional modes of image contrast compared to conventional attenuation-based x-ray imaging, thus providing additional structural and functional information about the sample. The edge-illumination (EI) technique has been used to provide attenuation, refraction, and scattering contrast in both biological and non-biological samples. However, the retrieval of low scattering signals by fitting a single Gaussian remains problematic, principally due to the inability of the EI system to achieve perfect dark-field illumination. We present a new retrieval method that fits three Gaussians, which successfully overcomes this limitation, and provide examples of the retrieval of such signals in highly absorbing, weakly scattering samples.

Type: Article
Title: Retrieval of weak x-ray scattering using edge illumination
Open access status: An open access version is available from UCL Discovery
DOI: 10.1364/OL.43.003874
Publisher version: https://doi.org/10.1364/OL.43.003874
Language: English
Additional information: © 2018 The Optical Society. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License (https://creativecommons.org/licenses/by/4.0/).
Keywords: X-ray imaging, X-ray imaging, X-ray coded apertures, Scattering measurements, Phase retrieval
UCL classification: UCL
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/10052407
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