1231 / 1245
Total margin
03/01/13
=
Σ
+ = 2.5Σ + 1.64
Σ = Σ
2
+ Σ
2
+ Σ
2
=
2
+
2
+
2
−
In practice, the margin is
determined with respect to the
95% isodose surface
95%
50%
Subtracted
from margin
|
|
1231 / 1245
Total margin
03/01/13
=
Σ
+ = 2.5Σ + 1.64
Σ = Σ
2
+ Σ
2
+ Σ
2
=
2
+
2
+
2
−
In practice, the margin is
determined with respect to the
95% isodose surface
95%
50%
Subtracted
from margin