Table 1. Absolute tracking errors between the real and estimated tumor trajectories along the ML and SI directions for the three-tumor motion-conversion models under different respiratory patterns [data are median (25–75th percentile) values in millimeters].
| Tumor motion conversion model | Respiratory patterns | Tracking errors (mm) | |
|---|---|---|---|
| SI | ML | ||
| I | Sine | 2.03 (1.05–3.35) | 0.89 (0.46–1.33) |
| I | A | 1.05 (0.49–1.82) | 0.57 (0.28–0.93) |
| I | B | 1.08 (0.44–2.17) | 0.52 (0.25–0.87) |
| I | C | 0.82 (0.45–1.28) | 0.55 (0.34–0.95) |
| I | D | 1.05 (0.42–1.60) | 0.52 (0.28–0.82) |
| II | Sine | 1.93 (0.81–3.56) | 1.29 (0.77–2.44) |
| II | A | 0.94 (0.4–1.75) | 0.66 (0.31–1.2) |
| II | B | 1.70 (0.83–2.68) | 0.90 (0.43–1.50) |
| II | C | 0.59 (0.35–1.01) | 0.75 (0.46–1.62) |
| II | D | 1.26 (0.54–2.15) | 0.66 (0.31–1.02) |
| III | Sine | 1.32 (0.62–2.42) | 1.57 (0.87–2.57) |
| III | A | 0.85 (0.41–1.57) | 0.62 (0.36–1.02) |
| III | B | 1.10 (0.58–1.71) | 1.05 (0.49–1.61) |
| III | C | 0.97 (0.46–1.66) | 0.88 (0.53–1.82) |
| III | D | 0.91 (0.44–1.44) | 0.48 (0.27–0.86) |
SI, superior-inferior; ML, medial-lateral.