Test–Retest Bias, Variability, and Reliability of BP Estimated by ROI Time–Activity Curve-Fitting Method
| BP (mean ± SD; n = 8) | |||||
|---|---|---|---|---|---|
| Region | Test | Retest | Bias (%) | Variability (%) | Reliability (ρ) |
| Striatum | 1.38 ± 0.19 | 1.32 ± 0.16 | −4.3 | 3.7 | 0.89 |
| Thalamus | 2.04 ± 0.34 | 1.88 ± 0.30 | −7.5 | 4.6 | 0.84 |
| Raphe | 3.16 ± 0.26 | 2.93 ± 0.19 | −7.0 | 5.3 | 0.39 |
| Frontal cortex | 0.40 ± 0.06 | 0.37 ± 0.03 | −6.8 | 8.0 | 0.55 |
| Temporal cortex | 0.53 ± 0.13 | 0.51 ± 0.10 | −2.7 | 9.7 | 0.82 |
| Occipital cortex | 0.39 ± 0.12 | 0.36 ± 0.09 | −4.5 | 13.2 | 0.85 |