SBRT2015

Commissioning • Usually, this is the only time physicists can perform EXTENSIVE testing, make time. • Don’t forget QA of the QA material !

eg mechanical performance of phantoms, leakage/noise chambers, performance film dosimetry and analysis, …

• New game, new tools? !

Specific requirements for dosimetry " eg heterogeneity correction "

eg non-standard and small field dosimetry

eg interplay effects (VMAT?)

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! Specific requirements for image-guidance system " eg coincidence of imaging isocentre and treatment isocentre " eg timing gating trigger, tracking accuracy ! Specific requirements for QA tools (4D?)

• End2End testing • External audits

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SBRT 2015 - D. Verellen