99mTc to 123I Activity Ratios in Several Simulated Brain Structures for Six Simulated Dual-Isotope Studies
| Study | Cerebellum (10,550) | Corpus callosum (764) | Frontal cortex (8,671) | Parietal cortex (9,368) | Occipital cortex (5,407) | Caudate nucleus (776) | Putamen (738) |
|---|---|---|---|---|---|---|---|
| 1. Normal 1 | 3.85 | 2.53 | 3.47 | 3.65 | 3.82 | 0.96 | 1.07 |
| 2. Normal 2 | 1.93 | 1.27 | 1.74 | 1.83 | 1.91 | 0.48 | 0.54 |
| 3. Normal 3 | 7.70 | 5.06 | 6.94 | 7.30 | 7.64 | 1.92 | 2.14 |
| 4. Reduced 123I | 3.85 | 2.53 | 3.47 | 3.65 | 3.82 | 1.92 | 2.14 |
| 5. Reduced 99mTc | 3.85 | 2.53 | 1.74 | 1.77 | 3.82 | 0.92 | 1.07 |
| 6. Reduced 123I and 99mTc | 3.85 | 2.53 | 1.74 | 1.77 | 3.82 | 0.92 | 2.14 |
Numbers in parentheses are number of voxels.