IMRT

Linear Boltzmann Transport Equation (LBTE) Solvers

Dose Calculation as Energy Transport: Explicit, deterministic ‘solution’ of the Boltzmann equation vs. its stochasic ‘solution’ via Monte Carlo.

• 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 • 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)

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

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