IMRT Course 2016

IAEA/AAPM formalism

• Route 1 • Small static field dosimetry for machines that cannot establish a conventional reference field • Introducing the intermediate machine-specific-reference field (msr) • Route 2 • Composite field dosimetry • Introducing msr and plan-class-specific reference field (pcsr) • The pcsr is a field that should be as close to a class of clinical plans as possible, while generating a homogeneous dose region “much” larger than the sensitive volume of the detector