Overview of Activity Concentration and Ratios Used During Phantom Experiments
| Activity concentration (MBq/mL) | ||||
| Isotope | Photon energy (keV) | Hot cylinders | Background | Ratio |
| 99mTc | 141 | 0.88 | 0.08 | 11.4 |
| 131I | 364, 637, 284 | 0.66 | 0.06 | 10.4 |
| 18F | 511 | 1.34 | 0.12 | 11.5 |