Table 2.
Radial extent of fiber reconstructions.
| Radial Extent Hemisphere | Mean ± SD, (°) | Range, (°) | P-value | ||||||
|---|---|---|---|---|---|---|---|---|---|
| DTI | CSD | MLFT | DTI | CSD | MLFT | CSD–DTI | MLFT–DTI | MLFT–CSD | |
| Right | 21.9 ± 11.7 | 30.0 ±14.6 | 73.8 ± 16.1 | 5.28 – 71.53 | 11.68 – 77.75 | 23.65 – 90.45 | 5.5*10-5 | 3.6*10-8 | 3.6*10-8 |
| Left | 20.1 ± 8.3 | 28.9 ± 10.5 | 67.8 ± 18.3 | 1.75 – 39.84 | 5.97 – 51.72 | 22.31 – 90.07 | 5.3*10-7 | 3.6*10-8 | 3.6*10-8 |
| Affected | 21.6 ± 11.7 | 32.8 ± 14.6 | 74.8 ± 15.6 | 5.28 – 71.53 | 11.68 – 77.75 | 23.65 – 89.41 | 1.1*10-6 | 3.6*10-8 | 3.6*10-8 |
| Unaffected | 20.3 ± 8.0 | 26.1 ± 8.9 | 66.7 ± 17.9 | 1.75 – 36.22 | 5.97 – 51.72 | 22.31 – 90.45 | 1.5*10-5 | 3.6*10-8 | 3.6*10-8 |
This table shows the mean ± SD and ranges for the radial extents of CST reconstructions with the three different algorithms used (DTI-based tractography, CSD-based tractography, and MLFT). Discrimination is made between left and right hemispheres as well as tumor-affected and unaffected hemispheres. P-values were computed for the comparisons of radial extents derived from the different algorithms (Wilcoxon signed-rank paired tests with significance level α=0.05). CST, corticospinal tract; SD, standard deviation; DTI, diffusion tensor imaging; CSD, constrained spherical deconvolution; MLFT, multi-level fiber tracking