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Table 1 Critical organ dose-volume limits for stereotactic ablative radiotherapy to 50 Gy given in 4 fractions
| Organ, Limit, and Volume | Maximum dose limits |
|---|---|
| Esophagus | |
| Dmax | 35 Gy |
| ≤ 1 cm3 | 30 Gy |
| ≤ 5 cm3 | 20 Gy |
| Brachial plexus | |
| Dmax | 40 Gy |
| ≤ 1 cm3 | 35 Gy |
| ≤ 5 cm3 | 30 Gy |
| Trachea | |
| Dmax | 45 Gy |
| ≤ 1 cm3 | 35 Gy |
| ≤ 5 cm3 | 30 Gy |
| Main bronchus and bronchial tree | |
| ≤ 1 cm3 | 40 Gy |
| ≤ 5 cm3 | 35 Gy |
| Heart | |
| ≤ 1 cm3 | 40 Gy |
| ≤ 5 cm3 | 35 Gy |
| Total lung volume* | |
| V20 Gy(RBE) | < 20% of total lung volume |
| V10Gy(RBE) | < 30% of total lung volume |
| V5Gy(RBE) | < 40% of total lung volume |
| Major vessels | |
| Dmax | 45 Gy |
| ≤ 1 cm3 | 40 Gy |
| ≤ 5 cm3 | 35 Gy |
| Skin | |
| ≤ 1 cm3 | 35 Gy |
| ≤ 5 cm3 | 30 Gy |
| Chest wall | |
| ≤ 10 cm3 | 45 Gy |
| ≤ 30 cm3 | 35 Gy |
| Spinal cord | |
| Dmax | 25 Gy |
| ≤ 5 cm3 | 20 Gy |
