TABLE 2.
The results (with 95% confidence intervals) from running the TRE compensation algorithm on five cadaver scans
| Voxel size 0.43 mm3 Spatially varying safety margins | Voxel size 0.43 mm3 Uniformly thick safety margins | Voxel size 0.23 mm3 Spatially varying safety margins | Voxel size 0.23 mm3 Uniformly thick safety margins | |
|---|---|---|---|---|
| Facial nerve | ||||
| Volume of safety margin (mm3) | 229.13±19.55 | 262.46±21.45 | 140.18±24.53 | 162.66±15.25 |
| Final overall damage risk (acceptable =0.001) | 6.56E-04±3.81E-04 | 4.64E-04±4.06E-04 | 6.88E-04±4.88E-04 | 6.16E-04±2.99E-04 |
| Average mahalanobis distance from final shell voxels to critical structure | 7.70±0.49 | 8.95±0.55 | 5.59±0.82 | 6.71±0.48 |
| Standard deviation of mahalanobis distances from final shell voxels to critical structure | 1.07±0.14 | 2.40±0.24 | 0.52±0.04 | 1.77±0.18 |
| Chorda tympani | ||||
| Volume of safety margin (mm3) | 69.17±9.87 | 47.80±7.21 | 24.94±2.20 | 26.71±3.53 |
| Final overall damage risk (acceptable =0.05) | 0.0105±0.0269 | 0.0068±0.0119 | 0.0486±0.0019 | 0.0368±0.0131 |
| Average mahalanobis distance from final shell voxels to critical structure | 7.77±0.61 | 6.52±0.28 | 4.32±0.09 | 4.89±0.12 |
| Standard deviation of mahalanobis distances from final shell voxels to critical structure | 1.17±0.20 | 1.94±0.41 | 0.51±0.11 | 1.42±0.24 |
| Internal auditory canal | ||||
| Volume of safety margin (mm3) | 227.39±56.00 | 222.96±55.25 | 142.39±26.46 | 158.28±27.24 |
| Final overall damage risk (acceptable = 0.01) | 0.0012±0.0014 | 0.0059±0.0053 | 0.0078±0.0054 | 0.0071±0.005 |
| Average mahalanobis distance from final shell voxels to critical structure | 7.34±0.19 | 7.57±1.55 | 4.84±0.48 | 5.57±0.59 |
| Standard deviation of mahalanobis distances from final shell voxels to critical structure | 1.15±0.15 | 1.93±0.57 | 0.55±0.13 | 1.32±0.35 |
| Sigmoid sinus | ||||
| Volume of safety margin (mm3) | 646.57±184.37 | 661.26±265.14 | 470.96±154.14 | 514.44±174.98 |
| Final overall damage risk (acceptable = 0.01) | 0.0024±0.0043 | 0.0051±0.0054 | 0.0075±0.0052 | 0.0034±0.0038 |
| Average mahalanobis distance from final shell voxels to critical structure | 7.35±0.19 | 7.56±1.29 | 5.24±0.67 | 5.76±0.38 |
| Standard deviation of mahalanobis distances from final shell voxels to critical structure | 1.03±0.09 | 1.73±0.45 | 0.56±0.05 | 1.04±0.14 |
| External auditory canal | ||||
| Volume of safety margin (mm3) | 426.98±65.60 | 347.70±39.15 | 241.88±29.13 | 262.82±17.77 |
| Final overall damage risk (acceptable =0.05) | 0.0203±0.0283 | 0.0105±0.0162 | 0.0477±0.0022 | 0.0407±0.0064 |
| Average mahalanobis distance from final shell voxels to critical structure | 7.39±0.46 | 6.56±0.49 | 4.44±0.30 | 4.99±0.20 |
| Standard deviation of mahalanobis distances from final shell voxels to critical structure | 1.16±0.18 | 1.93±0.66 | 0.51±0.12 | 1.22±0.17 |
| Time (m) | 3.85±1.79 | 14.87±11.46 | 108.70±40.76 | 137.49±82.23 |