IMRT 2018

Why patient-specific QA?

The agreement between planned and delivered dose may depend on plan-specific parameters, like the level of modulation Seems unavoidable at least until:

• Stable history of machine QC for dynamic MLC and gantry

• Monte Carlo dose-calculation algorithm

• Convenient secondary dose calculation

• Extensive experience of high pass rates for patient-specific plan measurements

• New history of patient-specific QA needs to be aquired after new class solution is introduced May be a legal requirement in your country EURATOM directive 97/43: ”…assessment and evaluation of patient doses …”

06/06/2018