399 / 1084
Margins and the “van Herk recipe”
•
“Blurring” part: cumulative minimum dose ≥ 95% of D
p
•
“Shifting part: ≥90% of population receives a cumulative CTV
dose ≥ 95% of D
p
M
r
=
b s
2
+
s
p
2
-
bs
p
b
=
1.64
The PTV 2017 - D. Verellen
M
=
a
S +
M
r
a
=
2.5