Validation of a Monte Carlo code system for grid evaluation with interference effect on Rayleigh scattering

Abel Zhou, Graeme L White, Rob Davidson

Research output: Contribution to journalArticle

Abstract

Anti-scatter grids are commonly used in x-ray imaging systems to reduce scatter radiation reaching the image receptor. Anti-scatter grid performance and validation can be simulated through use of Monte Carlo (MC) methods. Our recently reported work has modified existing MC codes resulting in improved performance when simulating x-ray imaging. The aim of this work is to validate the transmission of x-ray photons in grids from the recently reported new MC codes against experimental results and results previously reported in other literature. The results of this work show that the scatter-to-primary ratio (SPR), the transmissions of primary (T p), scatter (T s), and total (T t) radiation determined using this new MC code system have strong agreement with the experimental results and the results reported in the literature. T p, T s, T t, and SPR determined in this new MC simulation code system are valid. These results also show that the interference effect on Rayleigh scattering should not be neglected in both mammographic and general grids' evaluation. Our new MC simulation code system has been shown to be valid and can be used for analysing and evaluating the designs of grids.

Original languageEnglish
Article number03NT02
JournalPhysics in Medicine and Biology
Volume63
Issue number3
DOIs
Publication statusPublished - 2 Feb 2018

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X-Rays
Radiation
Monte Carlo Method
Photons

Cite this

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title = "Validation of a Monte Carlo code system for grid evaluation with interference effect on Rayleigh scattering",
abstract = "Anti-scatter grids are commonly used in x-ray imaging systems to reduce scatter radiation reaching the image receptor. Anti-scatter grid performance and validation can be simulated through use of Monte Carlo (MC) methods. Our recently reported work has modified existing MC codes resulting in improved performance when simulating x-ray imaging. The aim of this work is to validate the transmission of x-ray photons in grids from the recently reported new MC codes against experimental results and results previously reported in other literature. The results of this work show that the scatter-to-primary ratio (SPR), the transmissions of primary (T p), scatter (T s), and total (T t) radiation determined using this new MC code system have strong agreement with the experimental results and the results reported in the literature. T p, T s, T t, and SPR determined in this new MC simulation code system are valid. These results also show that the interference effect on Rayleigh scattering should not be neglected in both mammographic and general grids' evaluation. Our new MC simulation code system has been shown to be valid and can be used for analysing and evaluating the designs of grids.",
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Validation of a Monte Carlo code system for grid evaluation with interference effect on Rayleigh scattering. / Zhou, Abel; White, Graeme L; Davidson, Rob.

In: Physics in Medicine and Biology, Vol. 63, No. 3, 03NT02, 02.02.2018.

Research output: Contribution to journalArticle

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AU - White, Graeme L

AU - Davidson, Rob

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