2382-2383 / 3107
Wedged (or filtered) beams:
D(z,c)=D
R
*MU*O
R
(c)*TPR(z,c)*
k
w
(c)
k
w
(c) is the wedge (or filter) factor and is field
size dependent
·
·
D(z,c)
D
R
*O
R
(c)*TPR(z,c)
*k
w
(c)
MU=
·
k
W
(
c
)
=
D
(
d
=
10
cm
,
c
×
c
,
SSD
100
cm
,
+
wig
)
D
(
d
=
10
cm
,
c
×
c
,
SSD
100
cm
,
−
wig
)
Wedge transmision factor
Attenuation in the wedge