Dose 2016

Effect: Fluence optimization

leaf positions ( ) ξ segment weights ( ) w e-fluence/opening density

grad. w.r.t. leaf pos.

f

d d

D f

ξ Ψ Ψ ξ ∂ ∂ d d D

∂

=

energy fluence ( ) w , =

∂

ξΨΨ

grad. w.r.t. energy fluence

dose ( ) ( ) w DD , ξΨ

d

f

d

D f

d

D

=

=

d

d

Ψ Ψ d

evaluation

objective ( ) ( ) ( ) w Df , ξΨ

d

D f

f

=

grad. w.r.t dose,

d

14

Adapted from A. Ahnesjö