ESTRO course Dose Modelling and Verification 2017

46

Wedge induced head scatter

A physical wedge acts as a scatter source. For external wedges, i.e. located below the collimators, the wedge scatter will result in increased doses outside the beam edges.

VW45=45 deg Virtual wedge PW45=45 deg Physical wedge

Zhu et al [9]

T Knöös

Warsaw 2017