Table 2 Registration differences between the CT datasets
|  | Δ couch shift; median (minimum/maximum) | |||||
|---|---|---|---|---|---|---|
Registration | Δx [mm] | p value | Δy [mm] | p value | Δz [mm] | p value |
Automatic | ||||||
 AIPvsPCT | −0.5 (−2.1/2.7) | <0.01* | −0.1 (−2.9/2.2) | 0.40 | −0.1 (−8.5/3.2) | 0.16 |
 MIPvsPCT | −0.5 (−1.3/2.9) | <0.01* | −0.4 (−4.0/2.3) | 0.03* | −0.3 (−8.7/3.3) | 0.03* |
 MidVvsPCT | −0.3 (2.0/2.2) | 0.02* | 0.0 (−2.9/3.9) | 0.86 | −0.4 (−9.9/5.8) | 0.05 |
 AIPvsMIP | −0.1 (−1.0/1.2) | 0.13 | 0.2 (−0.8/1.5) | <0.01* | 0.1 (−3.0/4.3) | 0.06 |
 AIPvsMidV | −0.1 (−3.8/1.6) | 0.29 | −0.2 (−2.8/2.3) | 0.16 | 0.2 (−6.3/2.7) | 0.11 |
 MIPvsMidV | −0.1 (−2.8/1.6) | 0.65 | −0.5 (−2.8/2.2) | <0.01* | 0.0 (−9.9/5.7) | 0.89 |
Manual | ||||||
 AIPvsPCT | 0.1 (−2.3/3.5) | 0.08 | 0.1 (−3.1/3.5) | 0.68 | 0.4 (−3.9/4.9) | 0.32 |
 MIPvsPCT | 0.5 (−4.5/3.3) | 0.04* | −0.6 (−4.3/4.8) | 0.27 | 0.6 (−4.3/4.0) | 0.05 |
 MidVvsPCT | 0.2 (−3.5/4.3) | 0.12 | −0.2 (−4.3/3.9) | 0.23 | 0.5 (−4.6/5.6) | 0.19 |
 AIPvsMIP | 0.0 (−2.3/3.5) | 0.61 | 0.2 (−2.6/4.1) | 0.12 | −0.3 (−6.5/3.2) | 0.46 |
 AIPvsMidV | 0.0 (−2.3/2.2) | 0.70 | 0.1 (−2.6/3.6) | 0.19 | −0.1 (−3.5/5.6) | 0.63 |
 MIPvsMidV | 0.0 (−3.8/3.1) | 0.71 | 0.0 (−4.2/4.2) | 0.85 | 0.1 (−4.7/5.4) | 0.81 |
Automatic vs manual | ||||||
 ΔPCT | −0.2 (−3.1/3.1) | 0.22 | 0.0 (−4.4/2.7) | 0.82 | 0.0 (−8.1/4.0) | 0.90 |
 ΔAIP | 0.0 (−3.5/2.5) | 0.55 | −0.2 (−1.5/2.0) | 0.41 | −0.1 (−6.0/3.0) | 0.99 |
 ΔMIP | −0.2 (−2.8/3.9) | 0.13 | 0.5 (−1.7/4.6) | 0.01* | −0.1 (−3.9/4.4) | 0.90 |
 ΔMidV | −0.2 (−3.7/1.7) | 0.30 | 0.1 (−4.4/6.4) | 0.90 | 0.2 (−9.9/2.9) | 0.24 |