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Proceedings Paper

Comparison of the phase and absorption contrast tomographic reconstruction
Author(s): Mehdi Toumi; Wei Zhou; Jovan G. Brankov
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Paper Abstract

Analyzer-based Imaging (ABI) belongs to a broader family of phase-contrast (PC) X-ray techniques. PC measures X-ray deflection phenomena when interacting with tissue, which is known to provide higher contrast images of soft tissue than other X-ray methods. This has a very important interest in the medical field, specially for mammogram applications. This paper presents a simulation study to compare the sensitivity of filtered back projection of absorption based imaging (implemented by FDK - a method usually used in the conventional X-ray computed tomography) and the phase contrast tomographic imaging. These results are based on previously proposed simulation tool for a table-top ABI systems using a conventional polychromatic X-ray source. In our experiments we evaluated images obtained under different errors in reconstruction parameters namely: the detector’s offset in position, the distance source to the detector (DSD) or source to the object (DSO).

Paper Details

Date Published: 16 March 2020
PDF: 7 pages
Proc. SPIE 11312, Medical Imaging 2020: Physics of Medical Imaging, 1131250 (16 March 2020); doi: 10.1117/12.2549754
Show Author Affiliations
Mehdi Toumi, Illinois Institute of Technology (United States)
Wei Zhou, Illinois Institute of Technology (United States)
Jovan G. Brankov, Illinois Institute of Technology (United States)

Published in SPIE Proceedings Vol. 11312:
Medical Imaging 2020: Physics of Medical Imaging
Guang-Hong Chen; Hilde Bosmans, Editor(s)

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