Table 2.
Comparison of the Euclidean distances between the predicted and ground truth target points (d1) and the target points identified by the two observers (d2).
| Landmark | Model vs ground truth (d1) (mm) | Observer 1 vs observer 2 (d2) (mm) | Paired diff. (d1 − d2) | p value |
|---|---|---|---|---|
| LCC | 1.6 (1.2–2.3) | 2.4 (1.4–3.4) | 0.8 ± 1.3 | <0.001 |
| NCC | 1.5 (0.9–2.1) | 2.4 (1.4–3.2) | −0.9 ± 1.3 | <0.001 |
| RCC | 1.6 (1.3–2.2) | 2.4 (1.9–3.6) | −0.9 ± 1.4 | <0.001 |
| LCO | 1.3 (0.9–1.9) | 1.4 (1.0–2.2) | −0.1 ± 1.0 | 0.2 |
| RCO | 1.4 (0.9–2.0) | 1.4 (1.0–1.8) | 0.1 ± 1.0 | 0.4 |
| All | 1.5 (1.1–2.1) | 2.0 (1.3–2.8) | −0.5 ± 1.3 | <0.001 |
Paired difference (Paired diff.) is in mm.