Table 1.
Quality scores with relative frequencies and inter-reader agreements for the DTI and CSD-PT reconstructions of CTT, CPCT, and CST tracts.
| Tract | Method | Reader 1 |
Reader 2 |
Cohen’s K | p-Value | ||||
|---|---|---|---|---|---|---|---|---|---|
| Score | Frequency | p-Value χ2 | Score | Frequency | p-Value χ2 | ||||
| CTT | DTI | 3 | 18 (36%) | <0.001* | 3 | 15 (30%) | <0.001* | 0.60 | <0.001* |
| 4 | 32 (64%) | 4 | 35 (70%) | ||||||
| 5 | 0 (0%) | 5 | 0 (0%) | ||||||
| CSD-PT | 3 | 3 (6%) | 3 | 2 (4%) | 0.66 | <0.001* | |||
| 4 | 28 (56%) | 4 | 27 (54%) | ||||||
| 5 | 19 (38%) | 5 | 21 (42%) | ||||||
| CPCT | DTI | 3 | 25 (50%) | 0.008* | 3 | 22 (44%) | 0.025* | 0.72 | <0.001* |
| 4 | 25 (50%) | 4 | 28 (56%) | ||||||
| 5 | 0 (0%) | 5 | 0 (0%) | ||||||
| CSD-PT | 3 | 2 (4%) | 3 | 5 (10%) | 0.62 | <0.001* | |||
| 4 | 35 (70%) | 4 | 32 (64%) | ||||||
| 5 | 13 (26%) | 5 | 13 (26%) | ||||||
| CST | DTI | 3 | 43 (86%) | 0.039* | 3 | 38 (76%) | 0.024* | 0.66 | <0.001* |
| 4 | 7 (14%) | 4 | 12 (24%) | ||||||
| 5 | 0 (0%) | 5 | 0 (0%) | ||||||
| CSD-PT | 3 | 1 (2%) | 3 | 0 (0%) | 0.57 | <0.001* | |||
| 4 | 20 (40%) | 4 | 25 (50%) | ||||||
| 5 | 29 (58%) | 5 | 25 (50%) | ||||||
CTT, cerebellar-thalamic tract; CPCT, corticopontocerebellar tract; CST, corticospinal tract; CSD, constrained spherical deconvolution; DTI, diffusion tensor imaging; p-value χ2, p-value for the Chi-square test.
The 5-point scale: 1, non-diagnostic; 2, poor quality; 3, fair quality; 4, good quality; 5, excellent quality. Only scores from 3 to 5 are reported because no reconstruction was scored with 1 or 2 points.
Bold font and asterisks indicate p-values which were statistically significant.