Table 1 Accuracy of US image-based localization with and without couplant pad (CP), comparing with CBCT: positioning errors from phantom test with intentional 3-dimensional table shifts (ranged from 1 mm to 30 mm in each direction)
LR (mm) | AP (mm) | IS (mm) | |
|---|---|---|---|
CBCT | 0.3 ± 0.3 | 0.5 ± 0.4 | 0.6 ± 0.5 |
US without CP | 0.4 ± 0.2 | 0.6 ± 0.4 | 0.3 ± 0.3 |
US with CP | 0.3 ± 0.2 | 0.5 ± 0.3 | 0.2 ± 0.1 |