Inclusion of coherence in Monte Carlo models for simulation of x-ray phase contrast imaging

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Cipiccia, Silvia and Vittoria, Fabio and Weikum, Maria and Olivo, Alessandro and Jaroszynski, Dino (2014) Inclusion of coherence in Monte Carlo models for simulation of x-ray phase contrast imaging. Optics Express, 22 (19). 23480–23488. ISSN 1094-4087 (https://doi.org/10.1364/OE.22.023480)

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Abstract

Interest in phase contrast imaging methods based on electromagnetic wave coherence has increased significantly recently, particularly at X-ray energies. This is giving rise to a demand for effective simulation methods. Coherent imaging approaches are usually based on wave optics, which require significant computational resources, particularly for producing 2D images. Monte Carlo (MC) methods, used to track individual particles/photons for particle physics, are not considered appropriate for describing coherence effects. Previous preliminary work has evaluated the possibility of incorporating coherence in Monte Carlo codes. However, in this paper, we present the implementation of refraction in a model that is based on time of flight calculations and the Huygens-Fresnel principle, which allow reproducing the formation of phase contrast images in partially and fully coherent experimental conditions. The model is implemented in the FLUKA Monte Carlo code and X-ray phase contrast imaging simulations are compared with experiments and wave optics calculations.

ORCID iDs

Cipiccia, Silvia, Vittoria, Fabio, Weikum, Maria ORCID logoORCID: https://orcid.org/0000-0003-2324-078X, Olivo, Alessandro and Jaroszynski, Dino ORCID logoORCID: https://orcid.org/0000-0002-3006-5492;
  • Item type:Article
    ID code:49375
    Dates:
    Date
    Event
    18 September 2014
    Published
    7 August 2014
    Accepted
    Notes:This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/OE.22.023480. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Technology and Innovation Centre > Advanced Science and Technology
    Depositing user: Pure Administrator
    Date deposited:26 Sep 2014 09:11
    Last modified:11 Nov 2024 10:48
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/49375
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