Dose Course 2018_Flipping book

Detector composition: perturbation effects in small fields

6MV

0.8 cm × 0.8cm

Calculations with Monte Carlo methods

Source sizes (FWHM) used in simulations: 0.6mm (6G) 2.0mm (20G)

PinPoint 31016 0.016 cm 3

PinPoint 31015 0.015 cm 3

Graph compiled with data from Crop el al (2009), PMB,54(9), 2951-2969, 2009