Zamir, A;
Diemoz, PC;
Vittoria, FA;
Hagen, CK;
Endrizzi, M;
Olivo, A;
(2017)
Edge illumination X-ray phase tomography of multi-material samples using a single-image phase retrieval algorithm.
Optics Express
, 25
(10)
pp. 11984-11996.
10.1364/OE.25.011984.
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Abstract
In this paper we present a single-image phase retrieval algorithm for multi-material samples, developed for the edge illumination (EI) X-ray phase contrast imaging method. The theoretical derivation is provided, along with any assumptions made. The algorithm is evaluated quantitatively using both simulated and experimental results from a computed tomography (CT) scan using the EI laboratory implementation. Qualitative CT results are provided for a biological sample containing both bone and soft-tissue. Using a single EI image per projection and knowledge of the complex refractive index, the algorithm can accurately retrieve the interface between a given pair of materials. A composite CT slice can be created by splicing together multiple CT reconstructions, each retrieved for a different pair of materials.
| Type: | Article |
|---|---|
| Title: | Edge illumination X-ray phase tomography of multi-material samples using a single-image phase retrieval algorithm |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1364/OE.25.011984 |
| Publisher version: | http://doi.org/10.1364/OE.25.011984 |
| Language: | English |
| Additional information: | Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. |
| Keywords: | Science & Technology, Physical Sciences, Optics, CODED-APERTURE, CONTRAST, RESOLUTION |
| 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/1549816 |
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