Mean (±SD) Regional VT, Coefficient of Variation, Absolute Test–Retest Variability (±SD), and ICC in HCs
| VT | ||||
| Brain region | Mean | CV (%) | Abs var (%) | ICC |
| Cortical GM | 16 ± 14 | 0.76 | ||
| Test | 1.7 ± 0.5 | 28 | ||
| Retest | 1.8 ± 0.7 | 40 | ||
| Cortical WM | 20 ± 8 | 0.64 | ||
| Test | 1.4 ± 0.3 | 25 | ||
| Retest | 1.5 ± 0.4 | 30 | ||
| Cerebellum | 19 ± 12 | 0.78 | ||
| Test | 1.7 ± 0.5 | 32 | ||
| Retest | 2.0 ± 0.8 | 40 | ||
| Brain stem | 18 ± 11 | 0.79 | ||
| Test | 2.2 ± 0.6 | 30 | ||
| Retest | 2.3 ± 0.8 | 35 | ||
| Thalamus | 16 ± 12 | 0.78 | ||
| Test | 2.3 ± 0.6 | 27 | ||
| Retest | 2.5 ± 0.9 | 37 | ||
| Basal ganglia | 16 ± 12 | 0.76 | ||
| Test | 1.8 ± 0.4 | 24 | ||
| Retest | 1.9 ± 0.7 | 34 | ||
| Hippocampus | 22 ± 15 | 0.69 | ||
| Test | 2.2 ± 0.9 | 43 | ||
| Retest | 2.3 ± 0.8 | 35 | ||
| Amygdala | 17 ± 13 | 0.82 | ||
| Test | 2.0 ± 0.7 | 34 | ||
| Retest | 2.2 ± 0.8 | 37 | ||
CV = coefficient of variation; Abs var = absolute test-retest variability.