IMRT 2018

Dosimetry audits

• National UK audit: 57 centres, 78 plans • National UK audit: 34 centres, 43 combinations of TPS and accelerator • Higher pass rate for less advanced plans

Gamma 3%,3mm pass rate for test plan

Gamma and dose deviation

G3,3 simple plans

G4,4 advanced plans

Budgell, RO99, 2011. A national dosimetric audit of IMRT Clark, RO113, 2014. Amulti-institutional dosimetry audit of rotational intensity-modulated radiotherapy