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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).