ESTRO course Dose Modelling and Verification 2017

Collimator scatter, cont… - minor influence

Collimator scatter profiles 4 MV through isocenter

1.0

%

0.8

30x30cm2

0.6

  , x y



coll



0

0.4

15x15cm2

0.2

5x5cm2

0

-20

-15 -10 -5 0 5 10 15 20

Off axis distance

41

Ahnesjö, Med. Phys. 22 p 267-278