Simultaneous wavefront and 3D tomographic reconstructions for phase imaging using Hartmann sensor

Emile Barjou; Francesca Mastropietro; Benjamin Barbrel; Ombeline De La Rochefoucauld; Aboubakr Bakkali; Benoit Recur; Pascal Desbarats

doi:10.1117/12.2654208

3 April 2023 Simultaneous wavefront and 3D tomographic reconstructions for phase imaging using Hartmann sensor

Emile Barjou, Francesca Mastropietro, Benjamin Barbrel, Ombeline De La Rochefoucauld, Aboubakr Bakkali, Benoit Recur, Pascal Desbarats

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Proceedings Volume 12464, Medical Imaging 2023: Image Processing; 124642T (2023) https://doi.org/10.1117/12.2654208
Event: SPIE Medical Imaging, 2023, San Diego, California, United States

Conference Poster

Abstract

X-ray absorption imaging is used in the medical field since a long time, but recent advance in phase-contrast imaging made it feasible in a clinical setup. X-ray Phase-contrast imaging technique using a Hartmann sensor allows extracting the absorption and phase information in a single acquisition, allowing to extract a phase-shift information with a minimal exposition and deposited dose. An iterative wavefront reconstruction (IR-WF) algorithm is necessary to extract the phase and absorption values from an acquired image. Our method consists of merging the wavefront reconstruction with a computed tomographic iterative reconstruction (IR-CT) to ensure that all images converge to the same result, improving the final 3D volume.

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Emile Barjou, Francesca Mastropietro, Benjamin Barbrel, Ombeline De La Rochefoucauld, Aboubakr Bakkali, Benoit Recur, and Pascal Desbarats "Simultaneous wavefront and 3D tomographic reconstructions for phase imaging using Hartmann sensor", Proc. SPIE 12464, Medical Imaging 2023: Image Processing, 124642T (3 April 2023); https://doi.org/10.1117/12.2654208

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