2678-2679 / 2953
Dose Calculation as Energy Transport:
Explicit, deterministic ‘solution’
of the
Boltzmann equation vs. its
stochasic ‘solution’
via Monte Carlo.
Linear Boltzmann Transport Equation (LBTE) Solvers
• Raytracing of incident photons and
electrons from virtual sources in the
accelerator head
• same head model as other 2-3-4D
superposition algorithm can be used
ESTRO IMRT course 2016
Dose Calculation in Static and Rotational IMRT
London April 7th, 2016
-47-
• approximations in modelling of phantom
scatter: weakly variable, thus rough
discretization of raytracing possible
•
explicit modelling of local electron
transport
— no kernel density rescaling
necessary
• first implementation in clinical TPS as
Varian Acuros XB
from Fogliata et al. 2011 (6:82)