Semi-classical Monte Carlo algorithm for the simulation of X-ray grating interferometry.
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
15 02 2022
15 02 2022
Historique:
received:
22
09
2021
accepted:
12
01
2022
entrez:
16
2
2022
pubmed:
17
2
2022
medline:
17
2
2022
Statut:
epublish
Résumé
Traditional simulation techniques such as wave optics methods and Monte Carlo (MC) particle transport cannot model both interference and inelastic scattering phenomena within one framework. Based on the rules of quantum mechanics to calculate probabilities, we propose a new semi-classical MC algorithm for efficient and simultaneous modeling of scattering and interference processes. The similarities to MC particle transport allow the implementation as a flexible c++ object oriented extension of EGSnrc-a well-established MC toolkit. In addition to previously proposed Huygens principle based transport through optics components, new variance reduction techniques for the transport through gratings are presented as transport options to achieve the required improvement in speed and memory costs necessary for an efficient exploration (system design-dose estimations) of the medical implementation of X-ray grating interferometry (GI), an emerging imaging technique currently subject of tremendous efforts towards clinical translation. The feasibility of simulation of interference effects is confirmed in four academic cases and an experimental table-top GI setup. Comparison with conventional MC transport show that deposited energy features of EGSnrc are conserved.
Identifiants
pubmed: 35169138
doi: 10.1038/s41598-022-05965-7
pii: 10.1038/s41598-022-05965-7
pmc: PMC8847374
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
2485Informations de copyright
© 2022. The Author(s).
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