2604-2605 / 3107
( )
( ) ( )
( )
sdd
dkdk
dD
A
r
d
2
,
,
,
∫∫
⎟
⎠
⎞
⎜
⎝
⎛
ʹ
− ʹ
ʹ
Φ=
s s r
s
r
ρ
D
(
r
,
d
)
|
r
-
s
|΄
also uses EPL
2D fluence
F
(
s
)
s
F
(
s
)
k
(
d
, |
r
-
s
|)
d
΄
now
individually
calculated for
each pencil
beam, according
to equivalent path
length
Slide from Dr. James Bedford
Izmir ESTRO physics
course, March 2013
AAA
Analytical Anisotropic Algorithm