Dose Course 2018_Flipping book

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]

Dublin 2018