Table 1. Test–retest reproducibility of regional [18F]fallypride binding using method 1 (3 × 30 minutes).
| Region | Testa | Retesta | Variability %b | ICC |
|---|---|---|---|---|
| Sensorimotor striatum | 19.73 (2.66) | 19.70 (2.06) | 5.56 (2.69) | 0.864 |
| Associative striatum | 17.50 (2.39) | 17.58 (1.77) | 5.05 (5.33) | 0.845 |
| Limbic striatum | 16.90 (2.83) | 17.04 (2.00) | 7.12 (7.37) | 0.804 |
| Putamen | 21.19 (2.82) | 21.50 (2.15) | 4.99 (3.76) | 0.879 |
| Caudate | 16.57 (2.77) | 16.71 (2.29) | 3.44 (3.87) | 0.961 |
| Amygdala | 1.77 (0.41) | 1.76 (0.38) | 4.08 (4.64) | 0.976 |
| Thalamus | 1.48 (0.28) | 1.47 (0.24) | 6.10 (6.70) | 0.903 |
| Hippocampus | 0.82 (0.21) | 0.79 (0.19) | 7.35 (6.40) | 0.950 |
| Inferior temporal gyrus | 0.57 (0.21) | 0.58 (0.20) | 4.83 (7.61) | 0.988 |
| Middle temporal gyrus | 0.39 (0.17) | 0.39 (0.17) | 6.40 (9.45) | 0.988 |
| Orbitofrontal cortex | 0.21 (0.10) | 0.23 (0.11) | 15.04 (15.68) | 0.923 |
| Anterior cingulate gyrus | 0.18 (0.10) | 0.18 (0.09) | 28.84 (39.59) | 0.822 |
Abbreviation: ICC, intraclass correlation coefficient.
a
BPND given as mean across subjects (s.d.).
b
Absolute variance given as mean across subjects (s.d.)=(|scan 1−scan 2|/(scan 1+scan 2)/2)*100.