IMRT 2018
Kernel-based methods: 2D-superposition methods: Pencil Kernel algorithms
3D point kernel
pencil kernel
Integrate 3D point kernels along beam direction (‘pre-convolution’):
→ patient-specific local lateral scatter cannot be modelled well!
Dose calculation becomes a 2D-integration (superposition integral):
( )
( ) ( ) = s rp s s ,
2
D
d r
Fluence on the patient surface ( ) : s ( ) : , sr p Pencil Beam kernel
ESTRO IMRT course 2017 Dose Calculation in Static and Rotational IMRT Madrid April 13th, 2017
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