TABLE III.
Variations in tumor tracking error with respect to changing gantry angle.
| LR | AP | SI | 3D | |
|---|---|---|---|---|
| Gantry angle | (mm) | (mm) | (mm) | (mm) |
| 0 | 0.30 ± 0.29 | 0.49 ± 0.41 | 0.95 ± 1.02 | 1.19 ± 1.05 |
| 30 | 0.30 ± 0.31 | 0.25 ± 0.19 | 1.34 ± 1.50 | 1.46 ± 1.48 |
| 60 | 0.20 ± 0.14 | 0.52 ± 0.37 | 1.17 ± 1.21 | 1.33 ± 1.23 |
| 90 | 0.34 ± 0.34 | 0.43 ± 0.29 | 1.22 ± 1.49 | 1.43 ± 1.45 |
| 120 | 0.13 ± 0.16 | 0.19 ± 0.14 | 1.24 ± 1.29 | 1.32 ± 1.23 |
| 150 | 0.12 ± 0.13 | 0.27 ± 0.23 | 1.15 ± 1.02 | 1.21 ± 1.02 |
| 180 | 0.14 ± 0.15 | 0.31 ± 0.31 | 1.03 ± 0.96 | 1.11 ± 0.98 |
| 210 | 0.20 ± 0.17 | 0.23 ± 0.20 | 1.29 ± 1.37 | 1.39 ± 1.33 |
| 240 | 0.13 ± 0.10 | 0.54 ± 0.36 | 0.85 ± 0.88 | 1.04 ± 0.92 |
| 270 | 0.33 ± 0.32 | 0.47 ± 0.36 | 1.03 ± 1.30 | 1.26 ± 1.30 |
| 300 | 0.11 ± 0.14 | 0.22 ± 0.14 | 1.21 ± 1.25 | 1.30 ± 1.20 |
| 330 | 0.09 ± 0.07 | 0.23 ± 0.17 | 1.16 ± 1.19 | 1.21 ± 1.17 |
| Overall | 0.20 ± 0.22 | 0.35 ± 0.30 | 1.14 ± 1.17 | 1.27 ± 1.16 |