Estimated Parameter Values from Gray Matter, Brain, and Tumor Regions
| Region | K1 (mL/g/min) | k2 (min−1) | k3 (min−1) | k4 (min−1) | k4-All (min−1) | MRFDG (μmol/100 g/min) | k4-All/k4 | k4 ratio to gray matter | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Early | Late | |||||||||
| Gray ± SD | 0.096 ± 0.028 | 0.148 ± 0.079 | 0.107 ± 0.046 | 0.015 ± 0.005 | 0.008 ± 0.002 | 22.4 ± 6.2 | 0.60 ± 0.20 | |||
| Brain ± SD | 0.081 ± 0.019 | 0.137 ± 0.057 | 0.093 ± 0.046 | 0.014 ± 0.004 | 0.008 ± 0.002 | 17.8 ± 5.2 | 0.58 ± 0.20 | 0.95 ± 0.13 | 0.92 ± 0.09 | |
| Tumor ± SD | 0.073 ± 0.045 | 0.162 ± 0.093 | 0.101 ± 0.053 | 0.015 ± 0.005 | 0.006 ± 0.002 | 15.4 ± 8.1 | 0.40 ± 0.16 | 1.10 ± 0.40 | 0.71 ± 0.16 | |
K1–k4 were estimated from the 0- to 60-min data. k4-All represents k4 estimated from all time points, which ranged up to 8 h after injection.