Primary photons
Secondary (scattered) photons
Variation of the output factor for primary and
secondary photons
40x40cm
courtesy M. Sikora
ESTRO IMRT course 2016
Dose Calculation in Static and Rotational IMRT
London April 7th, 2016
-12-
10x10cm
O
utput
F
actor =
Dose(field size)
Dose(reference field size)