Table 4.
Test targets | Before correction (mm) | After correction with needle tracking (mm) |
---|---|---|
Marker-needle distance <10 mm (2 targets) | 29.4 ± 2.0 | 1.0 ± 0.2 |
Marker-needle distance <30 mm (8 targets) | 27.1 ± 2.2 | 2.8 ± 1.5 |
Marker-needle distance <50 mm (All 12 targets) | 28.2 ± 2.6 | 3.4 ± 1.9 |