ESTRO course on Image Guided Radiotherapy in Clinical Practice 2018

Planning target volume margins

Small PTV

Intermediate PTV

Large PTV

CTV  PTV (cm)

Based on CT30 Based on CT0

Anterior

0.5

1.5

1.5

2.0

Posterior

0.5

1.0

1.0

1.2

Lateral

0.5

0.5

0.5

0.75

Superior

0.5

1.5

1.5

2.5

Inferior

0.5

0.5

0.5

0.75