Table 2. Planning parameters for the 10-fraction re-radiosurgery.
BED10/2: a biologically effective dose based on the linear-quadratic formula with an alpha/beta ratio of 10/2; GTV: gross tumor volume; Dmax: maximum dose; DX%: a minimum dose encompassing at least X% of the target volume; GTV + 2 mm: GTV plus an isotropic 2-mm margin
| Structures | Volumes | Parameters | Dose (BED10) | BED2 |
| GTV | 9.72 cm3 | Dmax | 78.4 Gy (139.9 Gy) | 385.7 Gy |
| D85.6% | 57.6 Gy (90.8 Gy) | 223.5 Gy | ||
| D98% | 54.7 Gy (84.6 Gy) | 204.3 Gy | ||
| D99.1% | 53.0 Gy (81.1 Gy) | 193.5 Gy | ||
| GTV + 2 mm | 17.20 cm3 | D98% | 49.3 Gy (73.6 Gy) | 170.8 Gy |
| D99% | 43.0 Gy (61.5 Gy) | 135.5 Gy |