Advanced Physics for Brachytherapy 2018

4. real sources

Input must now be source specific: • Primary dose distribution • Distribution of primary photon energy spectrum • Distribution of 1sc photon energy spectrum • Distribution of msc photon energy spectrum μ/ρ, μen/ρ data for the calculation of scerma, as well as 1sc & msc kernels, must be weighed over the appropriate energy spectra

Implementation detail: Primary dose distribution is fit by an analytical expression

Att. anis. Correction due to Ψ Ε diffs over θ

V ave. correction

Ψ anis. correction Ε

This allows calculations @ resolution different than that used in the MC simulation to derive the primary dose distribution