Table 1.
Overview of the setup differences between AlignRT and CBCT (target volume and surface registered)
| AlignRT / CBCT target volume | AlignRT / CBCT surface | |||||
|---|---|---|---|---|---|---|
| LR (mm) | CC (mm) | AP (mm) | LR (mm) | CC (mm) | AP (mm) | |
| M | 0.1 | −0.5 | 1.7 | 0.1 | 0.6 | 0.4 |
| Σ | 1.8 | 1.4 | 1.9 | 1.0 | 1.4 | 1.5 |
| σ | 1.4 | 1.6 | 1.9 | 1.2 | 1.4 | 1.0 |
| M - 1.96 x SD | −4.4 | −4.3 | −3.3 | −2.8 | −3.5 | − 3.0 |
| M + 1.96 x SD | 4.5 | 3.2 | 6.6 | 3.1 | 4.7 | 3.8 |
| R 2 | 0.43 | 0.53 | 0.35 | 0.74 | 0.44 | 0.64 |
M Group mean, Σ The systematic error, σ The random error, M ± 1.96 x SD The 95% limits of agreement, R2 The Pearson correlation coefficient, LR Left-right, CC Cranial-caudal, AP Anterior-posterior