Table 1 Overall mean of the discrepancy between the final and automatic alignment, setup uncertainty, and PTV margins calculated
All patients (69 patients, 917 fractions) | No OAR near target (30 patients, 389 fractions) | OAR near target (39 patients, 528 fractions) | |||||||
|---|---|---|---|---|---|---|---|---|---|
AP (mm) | LR (mm) | SI (mm) | AP (mm) | LR (mm) | SI (mm) | AP (mm) | LR (mm) | SI (mm) | |
Mean, M | −0.3 | 0.1 | 0.4 | −0.3 | 0.1 | 0.3 | −0.3 | 0.3 | 0.5 |
Systematic uncertainty, ∑ | 1.5 | 1.1 | 2.4 | 1.6 | 0.9 | 1.5 | 1.5 | 1.2 | 2.9 |
Random uncertainty, σ | 2.2 | 1.9 | 2.2 | 1.9 | 1.7 | 2.0 | 2.4 | 2.0 | 2.4 |
PTV margin | 5.3 | 4.1 | 7.5 | 5.3 | 3.5 | 5.1 | 5.3 | 4.5 | 8.9 |