536 / 1359
The semi-infinite slab approximation in tissue
Dublin 2018
14
The pencil beams are propagated through tissue as if it
was made of a stack of slabs, each with the local
heterogeneities along each ray extended laterally into
homogeneous slabs.
z
eff
(
z
)
=
S
tot
med
S
tot
water
×
0
z
ò
dz