Dose Course 2018_Flipping book

Total margin

=

Σ + = 2.5Σ + 1.64

A 5 mm distance between the 95% and 50% isodose surface corresponds to s p =3.2 mm

Σ = Σ 2 + Σ 2 + Σ 2

1.64 ′ 2 + 0.32 2 − 0.32

2 + 2 + 2 −

=

0.7 ′

=

Σ + = 2.5Σ + 0.7 ′

2 + 2

′ =

′ cm