Table 2.
Gross target volume (GTV) and planning target volume (PTV) of the entire cohort of patients treated for single large brain metastases (BMs)
| Median GTV and range for the entire cohort | 16.3 cm3(3.9–64.5 cm3) | ||
| GTV cm3 | (range cm3) | n. patients | % |
| ≤4 | (3.9–4) | 9 | 8.8 |
| 4.1–10 | (4.36–9.76) | 27 | 26.5 |
| 10.1–20 | (10.88–19.81) | 30 | 29.4 |
| 21–40 | (22.63–39.37) | 21 | 20.6 |
| >40 | (42.61–64.5) | 15 | 14.7 |
| Median PTV and range for the entire cohort | 33.7 cm3(9.2–122.3 cm3) | ||
| PTV cm3 | (range cm3) | n. patients | % |
| <10 | (9.2–10) | 9 | 8.8 |
| >10–24 | (10.1–23.1) | 27 | 26.5 |
| >20–38 | (21.2–36.7) | 30 | 29.4 |
| 40–85 | (40–72.37) | 21 | 20.6 |
| >85 | (88.6–122.3) | 15 | 14.7 |