Model | Logan VT transform | R2 | Slope | Intercept |
SRTM2 | (VT − VT_cerebellum)/VT_cerebellum | 0.92 | 0.90 | 0.04 |
SRTM2 k2’ fixed | (VT − VT_cerebellum)/VT_cerebellum | 0.95 | 0.94 | 0.03 |
Logan reference 180 min* | VT/VT_cerebellum* | 0.99* | 1.06* | −0.06* |
Logan reference 140 min | VT/VT_cerebellum | 0.96 | 0.85 | 0.17 |
Logan reference 100 min | VT/VT_cerebellum | 0.91 | 0.77 | 0.25 |
Logan reference 60 min† | VT/VT_cerebellum | 0.75 | 0.71 | 0.28 |
SUVR 160–180 min | VT/VT_cerebellum | 0.94 | 1.34 | −0.29 |
SUVR 120–140 min | VT/VT_cerebellum | 0.93 | 1.15 | −0.07 |
SUVR 100–120 min* | VT/VT_cerebellum* | 0.94* | 1.02* | 0.07* |
SUVR 80–100 min | VT/VT_cerebellum | 0.93 | 0.90 | 0.20 |
SUVR 40–60 min | VT/VT_cerebellum | 0.88 | 0.59 | 0.48 |
SUVR 110–140 min | VT/VT_cerebellum | 0.93 | 1.12 | −0.04 |
SUVR 100–130 min | VT/VT_cerebellum | 0.93 | 1.05 | 0.04 |
SUVR 90–120 min | VT/VT_cerebellum | 0.94 | 0.99 | 0.10 |
SUVR 80–110 min | VT/VT_cerebellum | 0.93 | 0.92 | 0.17 |
SUV 160–180 min | VT | 0.82 | 0.13 | −0.18 |
SUV 120–140 min | VT | 0.82 | 0.13 | −0.10 |
SUV 80–100 min | VT | 0.79 | 0.13 | 0.04 |
SUV 40–60 min | VT | 0.69 | 0.13 | 0.46 |
↵* Best agreements.
↵† Association was estimated only with n = 13 because 2 subjects gave unstable fits for k2’.
Linear regression was performed between each model’s outcome parameter and correspondingly transformed outcome from arterial-based Logan plot, for example, SUVR vs. VT/VT_cerebellum.
ref = reference.