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Detailed analysis of scatter contribution from different simulated geometries of X-ray detectors

Scattering is one of the main issues left in planar mammography examinations, as it degrades the quality of the image and complicates the diagnostic process. Although widely used, anti-scatter grids have been found to be inefficient, increasing the dose delivered, the equipment price and not eliminating all the scattered radiation. Alternative scattering reduction methods, based on post-processing algorithms using Monte Carlo (MC) simulations, are being developed to substitute anti-scatter grids. Idealized detectors are commonly used in the simulations for the purpose of simplification. In this study, the scatter distribution of three detector geometries is analyzed and compared: Case 1 makes use of idealized detector geometry, Case 2 uses a scintillator plate and Case 3 uses a more realistic detector simulation, based on the structure of an indirect mammography X-ray detector. This paper demonstrates that common configuration simplifications may introduce up to 14% of underestimation of the scatter in simulation results

Oliver Díaz is supported by the European Union within the Marie Sklodowska-Curie Innovative Training Networks (H2020-MSCA-IF-2014 SCARtool project, reference 657875) and the Ministry of Economy Competitiveness of Spain, under project reference DPI2015- and 68442-R

Springer Verlag

Manager: Ministerio de Economía y Competitividad (Espanya)
Author: Marimon, Elena
Nait-Charif, Hammadi
Khan, Asmar
Marsden, Philip A.
Diaz Montesdeoca, Oliver
Abstract: Scattering is one of the main issues left in planar mammography examinations, as it degrades the quality of the image and complicates the diagnostic process. Although widely used, anti-scatter grids have been found to be inefficient, increasing the dose delivered, the equipment price and not eliminating all the scattered radiation. Alternative scattering reduction methods, based on post-processing algorithms using Monte Carlo (MC) simulations, are being developed to substitute anti-scatter grids. Idealized detectors are commonly used in the simulations for the purpose of simplification. In this study, the scatter distribution of three detector geometries is analyzed and compared: Case 1 makes use of idealized detector geometry, Case 2 uses a scintillator plate and Case 3 uses a more realistic detector simulation, based on the structure of an indirect mammography X-ray detector. This paper demonstrates that common configuration simplifications may introduce up to 14% of underestimation of the scatter in simulation results
Oliver Díaz is supported by the European Union within the Marie Sklodowska-Curie Innovative Training Networks (H2020-MSCA-IF-2014 SCARtool project, reference 657875) and the Ministry of Economy Competitiveness of Spain, under project reference DPI2015- and 68442-R
Document access: http://hdl.handle.net/2072/294506
Language: eng
Publisher: Springer Verlag
Rights: Tots els drets reservats
Subject: Mama – Radiografia
Breast – Radiography
Imatges digitals
Digital images
Imatges mèdiques
Imaging systems in medicine
Monte Carlo method
Montecarlo, Mètode de
Title: Detailed analysis of scatter contribution from different simulated geometries of X-ray detectors
Type: info:eu-repo/semantics/article
Repository: Recercat

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