Parameter | Mean (mm) | SD (mm) | Maximum possible error* (mm) |
---|---|---|---|
Interactive matching | |||
Intraobserver variability (15 patients, 5 registrations each by 1 observer) | 1.5 | 0.3 | 5.6 |
Interobserver variability (5 patients, 5 registrations each by 5 observers) | 1.6 | 0.3 | 5.8 |
Surface matching | |||
Intraobserver variability (15 patients, 5 segmentations each by 1 observer) | 2.9 | 1.1 | 10.5 |
Interobserver variability (5 patients, 5 segmentations each by 5 observers) | 3.8 | 1.0 | 11.7 |
Woods' algorithm: reproducibility (11 patients, 5 registrations each) | 2.2 | 0.8 | 8.2 |
Difference between methods (11 patients, 15 registrations each with 3 methods, 1 observer) | 2.3 | 0.8 | 8.4 |
↵* Maximum spatial distance between 2 corresponding voxels in that patient and matching trial with worst registration result.