| Active principles | Rating | Bibliogr. | Expand | |
|---|---|---|---|---|
| 1 | Thallium Radioisotopes | 100 | + | |
| 2 | Iodine Radioisotopes | 9 | + | |
| 3 | Indium Radioisotopes | 8 | + | |
| 4 | Carbon Radioisotopes | 4 | + | |
| 5 | Tritium | 3 | + | |
| 6 | Oxygen Radioisotopes | 3 | + | |
| 7 | Xenon Radioisotopes | 3 | + | |
| 8 | Gallium Radioisotopes | 2 | + | |
| 9 | Nitrogen Radioisotopes | 2 | + | |
| 10 | Fluorine Radioisotopes | 2 | + | |
| 11 | Radioactive Tracers | 2 | + | |
| 12 | Sodium Radioisotopes | 1 | + | |
| 13 | Phosphorus Radioisotopes | 1 | + |