Table III.
Retrospective automatching results between clinical oblique setup images on the ExacTrac system and the UTE‐MRI DRR. The numbers are difference in translation and rotation between UTE‐MRI‐based and CT‐based automatching results.
| Vertical | Longitudinal | Lateral | ||||
|---|---|---|---|---|---|---|
| Patient | Translational error (mm) | Angular error (deg) | Translational error (mm) | Angular error (deg) | Translational error (mm) | Angular error (deg) |
| Pt. 1 | −0.33 ± 0.46 | −0.22 ± 0.56 | 0.33 ± 0.43 | −0.47 ± 0.33 | −0.15 ± 0.47 | −0.11 ± 0.41 |
| Pt. 2 | 0.16 ± 0.14 | 0.10 ± 0.36 | −0.09 ± 0.22 | −0.30 ± 0.15 | −0.12 ± 0.19 | 1.56 ± 0.49 |
| Pt. 3 | −0.25 ± 0.44 | 0.11 ± 0.17 | 0.05 ± 0.42 | 0.34 ± 0.27 | −0.06 ± 0.30 | 0.45 ± 0.49 |
| Pt. 4 | −0.01 ± 0.35 | −0.07 ± 0.37 | −0.39 ± 0.34 | 0.16 ± 0.32 | −0.19 ± 0.32 | 0.30 ± 0.32 |
| Pt. 5 | 0.10 ± 0.36 | −0.39 ± 0.39 | −0.74 ± 0.16 | 0.31 ± 0.33 | 0.18 ± 0.58 | 0.00 ± 0.19 |
| Pt. 6—tumor1 | 0.52 ± 0.38 | 0.48 ± 0.30 | 0.44 ± 0.26 | −0.07 ± 0.30 | −0.01 ± 0.43 | −0.42 ± 0.29 |
| Pt. 6—tumor2 | −0.31 ± 0.23 | 0.58 ± 0.16 | 0.15 ± 0.28 | 0.00 ± 0.16 | −0.67 ± 0.14 | 0.13 ± 0.18 |
| Pt. 7 | 0.39 ± 0.66 | −0.44 ± 0.32 | −0.41 ± 0.42 | 0.01 ± 0.23 | 0.06 ± 0.30 | 1.28 ± 0.46 |