IMRT Course 2016

Kernel-based methods: Convolution/Superposition

more realistic situation: Poly energetic incident photons, Homogeneous medium (water)

Dose in point r…

∫ ∫ 3

( ) r

( ) ( r ,

)

s rEhsETsd dE rD r r

=

−

,

polyenergetic primary photon source

3+1D- superposition:

weighted superposition of dose contributions for different energies

→ numerical less expedient than the previous idealized situation

s

r

ESTRO IMRT course 2016 Dose Calculation in Static and Rotational IMRT London April 7th, 2016

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