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Two Model Types
Knöös et al.:
A.
Models primarily based on equivalent path length for
inhomogeneity corrections, where electron transport is
not separately modeled, and the density changes are
sampled along the 1D primary rays.
B.
Models able to treat in an approximate way the electron
transport as well as the secondary photon transport in
the medium accounting for density changes, sampled
along the full three dimensions.