2660-2661 / 2953
Kernel-based methods:
2D-superposition methods: Pencil Kernel algorithms
Integrate 3D point kernels
along beam direction
(‘pre-convolution’):
3D point kernel
pencil kernel
→
patient-specific
local
lateral
scatter cannot be modelled well!
ESTRO IMRT course 2016
Dose Calculation in Static and Rotational IMRT
London April 7th, 2016
-38-
Dose calculation becomes a 2D-integration (superposition integral):
( )
( ) ( )
∫
Ψ =
srps sd rD
rr r
r
,
2
Fluence on the patient surface
( )
:
s
r
Ψ
( )
: ,
srp
rr
Pencil Beam kernel