Dose 2016

PTV designed so the delivered 95% dose conform to the CTV+2.5 Σ edge. The delivered dose is the planned dose blurred by σ .

1.0

95% dose level

CTV+2.5 Σ 90% of patients have CTV inside:

Prescribed 95% dose conformed to PTV edge, planned dose ”shaped ” by σ p

0.8

0.6

PTV

CTV

0.4

Relative dose

Location CDF

0.2

0.0

5

0

5

10

15

Target ”radius”