Contour | Ideal constraints | Acceptable constraints |
Breast PTV eval (whole breast volume) | V38 ≥ 95% V43.2 ≤ 50% Dmax < 46 Gy 0.95 ≤ CI ≤ 2.0 (optional) | V36 ≥ 90% V44.8 ≤ 50% Dmax < 48 Gy 0.85 ≤ CI ≤ 3.0 (optional) |
Contralateral breast | V1.44 ≤ 5% Dmax < 2.4 Gy | V2.4 ≤ 5% Dmax < 3.84 Gy |
Ipsilateral lung | V16 ≤ 15% V8 ≤ 35% V4 ≤ 50% | V16 ≤ 20% V8 ≤ 40% V4 ≤ 55% |
Contralateral lung | V4 ≤ 10% | V4 ≤ 15% |
Heart (for right sided tumors) | V16 = 0% V8 ≤ 10% Dmean ≤ 3.2 Gy | V20 = 0% V8 ≤ 15% Dmean ≤ 4.0 Gy |
Heart (for left sided tumors) | V16 ≤ 5% V8 ≤ 30% Dmean ≤ 3.2 Gy | V20 ≤ 5% V8 ≤ 35% Dmean ≤ 4.0 Gy |
Thyroid | Dmax ≤ 0.96 Gy | Dmax ≤ 1.44 Gy |