ESTRO course Dose Modelling and Verification 2017

40

MLC penumbras (motion direction)

The resulting penumbra is not only dependent on the leaf edges, but also on the location of the MLC in the treatment head.

@ d

max

(not Agility)

37.3 cm

Numbers equal SCD (outer edge)

(F)

37.9 cm

53.3 cm

Siemens 160 MLC

46 cm

To geometric penumbra

Huq et al [5]

T Knöös

Warsaw 2017