Table 1: Radiotherapy planning dose constraints.
Normal Structure |
|
Phase 1 (fx
1-7) |
Phase 2 (fx
8-13) |
Cumulative Plan |
Spinal Cord |
Maximum Dose |
≤ 12.6 Gy |
≤ 9.0 Gy |
≤ 45 Gy |
Normal lung - PTV |
Mean Dose V20 |
< 5.6 Gy ≤ 8.4% |
< 4.0 Gy ≤ 6.0 % |
20 Gy 30% |
Heart |
1/3 2/3 3/3 |
< 16.8 Gy < 12.6 Gy < 11.2 Gy |
< 12 Gy < 9.0 Gy < 8.0 Gy |
< 60 Gy < 45 Gy < 40 Gy |
Esophagus |
1/3 Mean Dose |
< 16.8 Gy ≤ 9.5 Gy |
< 12.0 Gy ≤ 6.8 Gy |
< 60 Gy ≤ 34 Gy |
V20 = % volume of both lungs minus PTV receiving 20 Gy