Advanced Physics for Brachytherapy 2018

1. I need to be efficient, angular discretization

• Acuros uses the first scatter source method so the photon spectrum exiting a source needs to be known • Acuros uses Triangular-Chebyshev quadrature sets for angular discretization and the integration for the generation of the scattering source • The angular discretization scheme is adaptive with S N order ranging from N=4 (24 discrete directions) to 30 (960 discrete directions) varying both within an energy group (g → g) and between energy groups (g → g’)

Guess which energies are given larger N …!