Advanced Brachytherapy Physics - Vienna 2016

The MC method …  Similar procedures (available in the literature from the 50’s) are used for sampling randomly from the probability distributions for every process involved in photon transport.  MC is a statistical method to approximate dose at all points of a geometry  The method inherently accounts for real sources, inhomogeneities, and h t di i di t i t d t p an om mens ons accor ng o npu a a.  The collision KERMA can be calculated within voxels by scoring the energy transferred to charged particles from interactions within the voxel d i hi b l (d d ) ( l ) an we g ng y voxe mass m=ρ V ana ogue MC .  Alternatively, photon energy fluence can be scored in each voxel and weighed by μen/ρ to obtain collision KERMA (track length estimator).