Table 2.
Treatment details
| First SBRT | ||
| Dose (Gy/fr) | 48/4 [105.6]: 50/4 [112.5]: 52/4 [119.6]: | 9: 13: 3: |
| 36/2 [100.8]: 50/10 [75]: | 1: 1: | |
| 60/8 [105]: 55/10 [85.3] | 3: 1 | |
| PTV (cc) | Median (range) | 38.5 (7.7–107.6) |
| PTV D98 (%) | Median (range) | 94.0 (78.8–97.0) |
| PTV D95 (%) | Median (range) | 95.0 (80.5–99.0) |
| PTV Dmedian (%) | Median (range) | 100.3 (96.0–103.4) |
| PTV D2 (%) | Median (range) | 104.6 (99.2–112.0) |
| ITV (cc) | Median (range) | 17.9 (1.7–61.3) |
| ITV Dmedian (%) | Median (range) | 100.8 (96.2–103.5) |
| Lung V20Gy (%) | Median (range) | 4.6 (1.6–11.1) |
| Second SBRT | ||
| Dose (Gy/fr) | 48/4 [105.6]: 50/4 [112.5]: 52/4 [119.6]: | 6: 3: 4: |
| 54/6 [102.6]: 60/8 [105]: 55/10 [85.3]: | 1: 13: 1: | |
| 60/15 [84]: 48/16 [64.2] | 2: 1 | |
| PTV (cc) | Median (range) | 69.8 (10.2–149) |
| PTV D98 (%) | Median (range) | 93.8 (86.8–100.8) |
| PTV D95 (%) | Median (range) | 96.0 (86.0–100) |
| PTV Dmedian (%) | Median (range) | 100.5 (94.8–105.3) |
| PTV D2 (%) | Median (range) | 105.4 (100.2–113) |
| ITV (cc) | Median (range) | 38.4 (1.5–106) |
| ITV Dmedian (%) | Median (range) | 100.6 (97.6–105) |
| Lung V20Gy (%) | Median (range) | 6.5 (2.4–14.5) |
| Total PTV Dmedian (BED10, Gy) | Median (range) | 215.0 (139.4–240.6) |
| Total Dmax (EQD2, α/β = 3, Gy) | ||
| Proximal bronchial tree | Median (range) | 226.7 (1.7–322.3) |
| Esophagus | Median (range) | 19.4 (0.8–146.8) |
| Great vessels | Median (range) | 111.2 (9.3–317.1) |
PTV planning target volume, Dx dose received by x% of PTV, V20Gy volume receiving 20 Gy, BED10 biologically effective dose-10 Gy, EQD2 equivalent dose in 2-Gy fractions. Figures in [] are BED10 in Gy