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The issue of how epistemic uncertainties affect the outcome of Monte Carlo simulation is discussed by means of a concrete use case: the simulation of the longitudinal energy deposition profile of low energy protons. A variety of electromagnetic and hadronic physics models is investigated, and their effects are analyzed. Possible systematic effects are highlighted. The results identify requirements...
A wide survey has been performed, concerning atomic binding energies and ionization energies used by well-known general purpose Monte Carlo codes and a few specialized electromagnetic models for track structure simulation. Validation results are reported.
In brachytherapy cancer treatments, methods for calculation of dose delivered to tumours and organs have been continuously improving. Monte Carlo methods are an important tool in dose calculation for brachytherapy cancer treatments, where the exposition to the source planning aims at the maximization of dose deposition in the target volume, while minimizing the deposition in healthy tissues. The use...
A R&D project has been launched in 2009 to address fundamental methods in radiation transport simulation and revisit Geant4 kernel design to cope with new experimental requirements. The project focuses on simulation at different scales in the same experimental environment: this set of problems requires new methods across the current boundaries of condensed-random-walk and discrete transport schemes...
In brachytherapy cancer treatments, methods for calculation of dose delivered to tumours and organs have been continuously improving. Monte Carlo methods are an important tool in dose calculation for brachytherapy cancer treatments, where the exposition to the source planning aims at the maximization of dose deposition in the target volume, while minimizing the deposition in healthy tissues. The use...
Various models of anthropomorphic phantoms have been developed in the past decades for usage in Monte Carlo simulation for radiation protection and other medical physics applications; they adopt two alternative approaches, either modeling the body components through analytical geometrical representations or through voxelized geometries. An original system has been developed in the context of the Geant4...
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