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47

Summary

Multisource beam representations

– allow modelling of individual machines by parameter settings

– actual implementations

varies between TPS

with great impact

on e.g. small field and VMAT/IMRT performance

– automated methods exist for parameter setting from measured

data

– parameters can also be readily derived from Monte Carlo phase

space data

– developed for several beam modalities

Be critical to your data!

For new, well controlled and standardized machines one

may consider using a standard set of data!