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ESTRO IMRT course 2015
Dose Calculation in Static and Rotational IMRT
Brussels October 8th, 2015
-12-
Primary photons
Secondary (scattered) photons
Variation of the output factor for primary and
secondary photons
40x40cm
10x10cm
O
utput
F
actor =
Dose(field size)
Dose(reference field size)
courtesy M. Sikora