| Structure | AAA (Gy) | AXB (Gy) | Difference | P-value |
| Lt Cochlear |
|
|
|
|
| D5% | 3.1 (0.0, 23.7) | 2.9 (0.0, 23.4) | 0.2 | <0.01 |
| Rt Cochlear |
|
|
|
|
| D5% | 3.0 (0.00, 32.3) | 2.8 (0.0, 32.0) | 0.2 | 0.01 |
| Lt Parotid |
|
|
|
|
| Mean | 29.8 (5.8, 52.7) | 28.9 (5.6, 52.7) | 0.9 | <0.01 |
| D50% | 24.8 (5.7, 67.3) | 24.0 (5.6, 67.0) | 0.8 | <0.01 |
| D20% | 49.2 (7.5, 68.5) | 49.1 (7.2, 68.6) | 0.1 | 0.75 |
| Rt Parotid |
|
|
|
|
| Mean | 26.3 (7.1, 46.9) | 25.5 (7.0, 47.3) | 0.8 | 0.02 |
| D50% | 20.6 (6.9, 54.6) | 19.8 (8.2, 69.5) | 0.8 | 0.94 |
| D20% | 46.0 (8.2, 69.5) | 45.8 (8.1, 70.3) | 0.2 | 0.94 |
| Spinal cord |
|
|
|
|
| Max | 34.3 (5.7, 45.0) | 34.3 (5.5, 45.0) | 0.0 | 0.80 |