Table 5 Dose-volume analysis of 4 major late complications
Complications | OAR volume | EBRT dose | SBRT dose | EBRT D30% | EBRT D50% | SBRT Dmax at OAR | SBRT D10% | SBRT D30% | SBRT D50% | SBRT V50% | SBRT V70% |
|---|---|---|---|---|---|---|---|---|---|---|---|
(cc) | (Gy) | (Gy/Fx) | (Gy) | (Gy) | (Gy) | (Gy) | (Gy) | (Gy) | (%) | (%) | |
Pontine necrosis (Brainstem) | |||||||||||
1 | 24.67 | 59.4 | 25/5 | 43.5 | 40.9 | 24.6 | 19 | 15.4 | 12.8 | 23.5 | 0.7 |
2 | 23.55 | 55.8 | 21/3 | 36.2 | 19.7 | 27.3 | 24.2 | 20.1 | 16.0 | 54.3 | 24.9 |
Temporal lobe necrosis (Temporal lobe) | |||||||||||
1 | 63 | 45 | 25/5 | 48.1 | 45.3 | 28.4 | 17.9 | 10.3 | 6.2 | 11.2 | 4.4 |
2 | 66.02 | 70.2 | 21/3 | 37.4 | 11.7 | 25.0 | 16.5 | 8.9 | 4.9 | 18.8 | 5.7 |
Optic retinopathy (Eyeball) | |||||||||||
1 | 10.7 | 45 | 25/5 | 45.1 | 45.1 | 27.7 | 23.7 | 18.4 | 13.3 | 35.9 | 12.8 |
2 | 11.2 | 50.4 | 20/5 | 52.1 | 49 | 22.5 | 21.1 | 18 | 13.5 | 50.6 | 25.9 |
Optic neuropathy (Optic nerve) | |||||||||||
1 | 0.483 | 45 | 25/5 | 41.3 | 40.7 | 27.8 | 27.3 | 27.0 | 26.7 | 100 | 97.2 |