Measured error of the Virtual Grid electrodes as compared with the actual electrode position at the time of surgery determined by a handheld infrared stereotactic probe
| Case | Base | Virtual to Actual Electrode Displacement (mm) | Mean | Min | Max | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | CT | 3.8 | 3.5 | 4.3 | 3.9 | 3.4 | 3.7 | 3.5 | 3.7 | 5.4 | 3.7 | 3.89 | 3.4 | 5.4 |
| 3 | CT | 0.5 | 3.6 | 4.3 | 3.1 | 2.3 | 4.1 | 3 | 2.4 | 4.9 | 4.2 | 3.24 | 0.5 | 4.9 |
| 4 | CT | 4.3 | 3.3 | 3 | 3.2 | 4 | 3.9 | 4.4 | 4.2 | 2.7 | 2.8 | 3.58 | 2.7 | 4.4 |
| 5 | CT | 2.6 | 3.8 | 2.1 | 2.4 | 2.7 | 2.4 | 2.1 | 3.3 | 4.5 | 2.1 | 2.8 | 2.1 | 4.5 |
| All CT | 3.4 | 0.5 | 5.4 | |||||||||||
| 2 | MRI | 3 | 4.1 | 3.5 | 2.6 | 2 | 1.9 | 2.7 | 2.3 | 1 | 0.8 | 2.39 | 0.8 | 4.1 |
| 3 | MRI | 0.8 | 0.5 | 0.8 | 1.6 | 1.3 | 3 | 3.2 | 4.7 | 4.3 | 4 | 2.42 | 0.5 | 4.7 |
| 4 | MRI | 1.4 | 1.4 | 2.5 | 2.3 | 3.5 | 2.8 | 5.2 | 2.6 | 4.7 | 3.7 | 3.01 | 1.4 | 5.2 |
| 5 | MRI | 2.9 | 1.5 | 1.7 | 3.3 | 2.2 | 1.6 | 2 | 1.5 | 1.8 | 4.2 | 2.27 | 1.5 | 4.2 |
| All MRI | 2.5 | 0.5 | 5.2 | |||||||||||