TVD 2016

Margin recipe

• To cover 90% of the patients with the 95% isodose level:

Margin = 2.5 * Ʃ + 0.7 * σ

Where

2 + Ʃ

2 + Ʃ

2

Ʃ = Ʃ

organmotion

setup

delineation

2 + σ

2

σ = σ

organmotion

setup