IMRT 2018

• Test the positioning of the MLC leaves • Irradiation of 1 mm gap • During gantry rotation Picket Fence test during gantry rotation

MLC movement direction

Ling IJBOP 72,2008 Commissioning and quality assurance of rapidarc radiotherapy delivery system Jørgensen MedPhys 38, 2011. Tolerance levels of EPID-based quality control for volumetric modulated arc therapy MV image