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Source size effects, focused leafs
Fieldsize 5x5cm
2
Fieldsize 1x1cm
2
cm
2
10 10 cm
x
Focused leafs
(Siemens MLC geometry)
-5
-4
-3
-2
-1
0
1
2
3
4
5
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
1.1
1.2
-5
-4
-3
-2
-1
0
1
2
3
4
5
0.0
0.2
0.4
0.6
0.8
1.0
1.2
.
.
.
.
.
.
.
1.1
.
Source sizes
Point
0.35 cm
0.70 cm
When the source “fills”
the “inverse” view
we get dramatic
decrease in fluence output with increasing source size!