IMRT 2018

Definition of small field

• Size of detector is similar or large compared to the beam dimension • Detector active volume at least r LCPE smaller than field edge • Low: IMRT dosimetry tools: field should be >1.5cm wider than detector volume

Wuerfel, Med. Phys. Int. 1 (2013) 81–90.Dose measurements in small fields Underwood MedPhys 3013. Detector density and small field dosimetry: integral versus point dose measurement schemes Low Med Phys 38,2011. Dosimetry tools and techniques for IMRT