Table 1.
Patient and treatment characteristics
| Characteristic | |
|---|---|
| Age, years, median (range) | 77 (39–93) |
| Sex, n (%) | |
| Male | 61 (64) |
| Female | 35 (36) |
| Operability, n (%) | |
| Operable | 25 (26) |
| Inoperable | 71 (74) |
| Histological type, n (%) | |
| Adenocarcinoma | 15 (16) |
| Squamous cell carcinoma | 4 (4) |
| Not identified | 77 (80) |
| T factor, n (%) | |
| T1a | 14 (15) |
| T1b | 47 (49) |
| T1c | 30 (31) |
| T2a | 5 (5) |
| Dose prescription to GTV, n (%) | |
| 54 Gy in 3 fractions | 91 (95) |
| 60 Gy in 3 fractions | 5 (5) |
| Prescribed Isodose line, %, median (range) | 76 (60–97) |
| V20Gy, %, median (range) | 2.4 (0.2–11.0) |
| GTV D99, %, median (range) | 101.4 (82.7–118.7) |
| PTV D95, %, median (range)) | 95.6 (79.8–112.9) |
Data are presented as median (range) or n (%). GTV gross tumor volume, PTV planning target volume, V20Gy normal lung volume receiving more than 20 Gy