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

Authors: Marimon, E., Nait-Charif, H., Khan, A., Marsden, P.A., Diaz, O.

Journal: Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics

Publication Date: 01/01/2016

Volume: 9699

Pages: 203-210

eISSN: 1611-3349

ISSN: 0302-9743

DOI: 10.1007/978-3-319-41546-8_27

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.

https://eprints.bournemouth.ac.uk/33567/

Source: Scopus