IMRT

Kernel-based methods: Convolution/Superposition

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

Dose in point r…

( ) 

( ) (  ,

) s rEhsETsd dE rD  

∫ ∫ 3

,

=

−

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 2015 Dose Calculation in Static and Rotational IMRT Brussels October 8th, 2015

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