Table 2 Summary of the mean and one standard deviation of the dosimetric parameters obtained with GTV–based prescription
85% PIL | 80% PIL | 70% PIL | 60% PIL | |
|---|---|---|---|---|
GTV D mean (Gy) | 54.0 ± 0.1 | 53.9 ± 0.1 | 53.6 ± 0.2 | 54.0 ± 1.2 |
PTV D mean (Gy) | 50.7 ± 0.6 | 49.3 ± 0.7 | 46.1 ± 0.9 | 42.9 ± 1.1 |
PTV D 98% (Gy) | 45.9 ± 1.2 | 43.2 ± 0.8 | 38.2 ± 0.5 | 33.6 ± 1.1 |
PTV D 95% (Gy) | 46.7 ± 1.1 | 43.9 ± 0.7 | 39.0 ± 0.4 | 34.4 ± 0.9 |
Spinal cord D 1% (Gy) | 7.9 ± 2.6 | 8.1 ± 3.2 | 7.0 ± 2.7 | a6.5 ± 2.2 |
Esophagus D 1% (Gy) | 8.2 ± 3.0 | 7.8 ± 4.1 | a6.9 ± 3.8 | a6.1 ± 3.3 |
Bronchus D 1% (Gy) | 11.8 ± 6.6 | 10.9 ± 6.2 | a9.1 ± 5.2 | a7.6 ± 4.5 |
Trachea D 1% (Gy) | 4.6 ± 6.1 | 4.5 ± 6.1 | a3.7 ± 5.0 | a3.4 ± 4.6 |
Chest wall/Rib V30Gy (cc) | 29.8 ± 27.3 | 18.1 ± 16.3 | a12.4 ± 12.4 | a6.3 ± 8.0 |
Heart D 1% (Gy) | 9.2 ± 8.3 | 8.5 ± 7.5 | 7.2 ± 6.5 | a6.3 ± 5.5 |
PTV minus GTV D50% (Gy) | 49.8 ± 0.8 | 48.2 ± 0.6 | a44.3 ± 0.6 | a40.5 ± 0.6 |
PTV minus GTV V54Gy (%) | 1.0 ± 1.8 | 1.3 ± 1.5 | a0.4 ± 0.5 | a0.1 ± 0.1 |
Normal Lung MLD (Gy) | 4.4 ± 1.6 | 4.0 ± 1.4 | a3.3 ± 1.0 | a2.9 ± 0.9 |
Normal Lung V30Gy (%) | 4.0 ± 2.6 | 3.1 ± 1.6 | a2.2 ± 1.2 | a1.7 ± 0.9 |
Normal Lung V20Gy (%) | 7.0 ± 3.6 | 5.9 ± 2.6 | a4.7 ± 2.2 | a3.7 ± 1.7 |
Normal Lung V10Gy (%) | 12.8 ± 4.9 | 11.3 ± 3.9 | a9.8 ± 3.5 | a9.4 ± 4.5 |
Normal Lung V5Gy (%) | 18.2 ± 5.0 | 17.2 ± 4.2 | a15.6 ± 3.7 | a14.6 ± 3.8 |