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Article Dans Une Revue Physics in Medicine and Biology Année : 2021

Evaluation of simulators for x-ray speckle-based phase contrast imaging

Résumé

X-ray phase contrast imaging (PCI) denotes a group of highly sensitive imaging techniques that permits imaging at scales ranging from nanoscopic to the medical. Recently introduced, speckle-based imaging has seen a rapid development because of its experimental simplicity and its capability to retrieve the refraction, the scattering and the absorption of a sample using a conventional X-ray set-up. Precise simulation would permit to optimise the imaging setups for different applications, but until now works on simulation of X-ray speckle-based phase contrast imaging have been very few. In this work we evaluate different simulation codes, based on Monte-Carlo, analytical ray-tracing and wave-optics Fresnel propagation. The simulation results are compared to both synchrotron and conventional imaging experiments to permits their validation. We obtain a strong similarity between simulated and experimental data. We discuss the validity and applicability of each approach.

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Imagerie
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Dates et versions

hal-03329939 , version 1 (28-10-2021)

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Laurene Quenot, Emmanuel Brun, Jean Michel Létang, Max Langer. Evaluation of simulators for x-ray speckle-based phase contrast imaging. Physics in Medicine and Biology, 2021, 66 (17), pp.1--12. ⟨10.1088/1361-6560/ac1f38⟩. ⟨hal-03329939⟩
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