Table 1 Systematic (Σ) and random (σ) target localization errors of the patient group and related dose-probability-based PTV margins calculated for the MidV approach. Baseline error refers to the residual localization error of the mean time-weighted target position. Iso error refers to the error related to the nonperfect coincidence between imaging and treatment isocenters. MidV error refers to the residual error of localizing the mean time-weighted target position in the MidV CT dataset
LR (mm) | AP (mm) | CC (mm) | |
|---|---|---|---|
Σbaseline | 1.9 | 1.9 | 2.8 |
σbaseline | 1.5 | 1.5 | 2.3 |
Σiso | 0.4 | 0.3 | 0.3 |
ΣMidV | 0.1 | 0.3 | 0.5 |
Margins [range] | [5.0–5.2] | [5.0–6.0] | [7.5–12.2] |