Dose Course 2018_Flipping book

Modelling collimators: shape of MLC leaf end

Penumbra from rounded leaf is almost invariant of position

Elekta MLC geometry, source size 0.35 cm

1

0.8

0.6

0.4

0.2

-10

-5

5

10

cm

1

0.8

0.6

0.4

0.2

-1

-0.5

0.5

1

cm

20

From Anders Ahnesjö