Residence Times in Source Regions and Number of Subjects Contributing to Each Source
| Source organ | Residence time (h) | No. of subjects |
|---|---|---|
| Brain | 0.012 | 5 |
| Gall bladder content | 0.016 | 7* |
| Stomach | 0.002 | 3 |
| Upper large intestine | 0.011 | 3 |
| Heart content | 0.002 | 7 |
| Heart wall | 0.004 | 3 |
| Kidneys | 0.012 | 4 |
| Liver | 0.107 | 6 |
| Lungs | 0.008 | 3 |
| Muscle | 0.066 | 3 |
| Cortical bone | 0.021 | 6 |
| Spleen | 0.002 | 5 |
| Urinary bladder content | 0.022 | 16 |
| Remainder of body | 0.206 | — |
↵* Four subjects were imaged at 0–40 min to represent the dynamic phase and 3 subjects were scanned at steady state at approximately 100 min after tracer injection.