10 Monte Carlo simulation of portal images for SBRT EPID-based dosimetry

Introduction. Stereotactic radiation body therapy (SBRT) treatments require the implementation of robust pre-treatment and in-vivo dosimetry methods, to which electronic portal imaging devices (EPIDs) offer an attractive solution. However, the development of EPID-based dosimetry models adapted to complex SBRT conditions is still challenging and is not completely supported for some EPID models and by commercial solutions. Therefore, in this work a detailed Monte Carlo (MC) model of the linac in combination with EPID is purposed to accurately predict the absorbed dose to the detector for further SBRT in-vivo dosimetry applications.

Source: Physica Medica: European Journal of Medical Physics - November 30, 2019 Category: General Medicine Authors: A.R. Barbeiro, J. Leste, T. Younes, L. Parent, L. Vieillevigne, R. Ferrand, J. Mazurier, A.L. Cunrath, D. Lazaro, D. Tromson, L. Simon, X. Franceries Source Type: research