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ESTRO IMRT course 2015
Dose Calculation in Static and Rotational IMRT
Brussels October 8th, 2015
-29-
Kernel-based methods:
Convolution/Superposition
3+1D-
superposition:
weighted superposition of dose contributions for
different energies
→
numerical less expedient than the previous
idealized situation
polyenergetic
primary photon source
r
s
more realistic situation:
Poly
energetic
incident photons,
Homogeneous medium (water)
Dose in point
r…
( )
( ) (
)
∫ ∫
−
=
s rEhsETsd dE rD
,
,
3