TABLE 2.
Mean VT ratios (IDIF/AIF) obtained from striatum, cortex, hippocampus, thalamus, cerebellum, hypothalamus, amygdala, olfactory bulb, and midbrain for each VOI related image-derived approach in both Logan graphical and 2TCM analysis.
| Method B | Method C | ||
| Method A | Vena cava/aorta | Vena cava/aorta | |
| Heart | (cuboid) | (1 × 1 × 1 mm) | |
| (mean ± SD) | (mean ± SD) | (mean ± SD) | |
| Logan VT ratio | 1.00 ± 0.17 | 0.97 ± 0.21 | 1.02 ± 0.25 |
| 2TCM VT ratio | 1.00 ± 0.13 | 0.97 ± 0.16 | 1.02 ± 0.21 |
n = 5. VT, total distribution volume; VOI, volume of interest; 2TCM, two-tissue compartment model; IDIF, image-derived input function; AIF, arterial input function.