Table 1 Dose constraints to target volume and organs at risk employed during optimization

PTV

D_95%

≥95%

D_max

≤107%

Bladder

V₃₀

<50%

V₄₀

<35%

V₅₀

<5%

Large bowel

V₃₀

<200cm³

V₃₅

<150cm³

V₄₀

<20cm³

D_max

<50Gy

Small bowel

V₃₀

<200cm³

V₃₅

<150cm³

V₄₀

<20cm³

D_max

<50Gy

External genitalia

V₂₀

<50%

V₃₀

<35%

V₄₀

<5%

Femural heads

V₃₀

<50%

V₄₀

<35%

V₅₀

<5%

Iliac crests

V₃₀

<50%

V₄₀

<35%

V₅₀

<5%