Mean variability ± SD (%) | ICC | |||||||||
Model | Putamen | Caudate nucleus | Ventral striatum | Substantia nigra | Global | Putamen | Caudate nucleus | Ventral striatum | Substantia nigra | Global |
VT | ||||||||||
1TCM | 17.4 ± 10.3 | 12.2 ± 9.6 | 12.4 ± 7.1 | 14.4 ± 10.1 | 14.1 ± 7.5 | 0.74 | 0.86 | 0.90 | 0.76 | 0.94 |
2TCM | 14.7 ± 7.2 | 19.0 ± 19.3 | 8.9 ± 5.1 | 11.3 ± 8.5 | 14.1 ± 9.2 | 0.86 | 0.62 | 0.97 | 0.90 | 0.95 |
2TCM[spec] | 17.3 ± 10.3 | 13.0 ± 8.9 | 12.6 ± 6.8 | 10.3 ± 6.4 | 12.7 ± 7.0 | 0.75 | 0.86 | 0.90 | 0.91 | 0.94 |
2TCM[aspec] | 14.5 ± 6.7 | 5.4 ± 4.1 | 11.8 ± 5.5 | 12.6 ± 3.0 | 12.3 ± 5.1 | 0.86 | 0.97 | 0.95 | 0.90 | 0.95 |
1TCM[intact] | 17.3 ± 12.8 | 13.9 ± 9.3 | 13.4 ± 5.5 | 13.6 ± 16.9 | 14.2 ± 9.6 | 0.68 | 0.83 | 0.90 | 0.57 | 0.94 |
BPND | ||||||||||
SRTM[FCx] | 9.4 ± 5.4 | 5.0 ± 3.2 | 4.5 ± 2.6 | 12.4 ± 11.5 | 7.8 ± 6.9 | 0.67 | 0.97 | 0.99 | 0.66 | 0.99 |
MRTM[FCx] | 9.3 ± 5.5 | 4.6 ± 3.1 | 6.2 ± 4.3 | 11.0 ± 10.4 | 7.8 ± 6.3 | 0.68 | 0.97 | 0.98 | 0.70 | 0.99 |
Values are derived from 135-min acquisition time. Variability (%) = |VT1 − VT2|/|VT1 + VT2| × 200. n = 4 subjects.
SRTM[FCx] = SRTM with frontal cortex (FCx) as reference tissue; MRTM with frontal cortex (FCx) as reference tissue.