Table 2.
Number of 3D SIFT-Rank feature correspondences on pairs of ultrasound volumes acquired at different time points during surgery
| US data | Patient 1 | Patient 2 | Patient 7 |
|---|---|---|---|
| Post-dura US/pre- iMR US | 81 | 22 | 46 |
| Pre-dura US/pre-iMR US | 123 | 71 | 12 |
| Pre-dura US/post-dura US | 124 | 57 | 30 |
|
| |||
| US Data | Patient 3 | Patient 4 | Patient 8 |
|
| |||
| Pre-dura US/post-dura US | 84 | 14 | 37 |
|
| |||
| US Data | Patient 5 | Patient 6 | |
|
| |||
| Pre-dura US/pre-iMR US | 49 | N/A | |
| Post-dura US/pre-iMR US | N/A | 98 | |
|
| |||
| US Data | Patient 9 | ||
|
| |||
| Intraop US/pre-iMR US | 250 | ||
| Post-dura US/pre-iMR US | 123 | ||
| Post-dura US/intraop US | 133 | ||
| Pre-dura US/pre-iMR US | 64 | ||
| Pre-dura US/intraop US | 50 | ||
| Pre-dura US/post-dura US | 151 | ||