Table 3. Ratios of the reconstructed counts measured in the ‘grey matter’ (GM) and the ‘white matter’ (WM”) compartments of Iida brain phantom filled with 18F, 68Ga, and 120I, respectively.
| Magnetic Field (T) | GM/"WM" | |
| 18F | 0 | 2.71±0.04 |
| 3 | 2.69±0.05 | |
| 7 | 2.70±0.04 | |
| 9.4 | 2.70±0.05 | |
| 68Ga | 0 | 2.32±0.04 |
| 3 | 2.46±0.05 | |
| 7 | 2.49±0.04 | |
| 9.4 | 2.49±0.05 | |
| 120I | 0 | 1.44±0.02 |
| 3 | 1.59±0.04 | |
| 7 | 1.67±0.04 | |
| 9.4 | 1.68±0.02 |
The data (mean ± standard deviation) were calculated from GM/WM ratios measured in five transaxial images with z-intervals of 1 cm.