| Active principles | Rating | Bibliogr. | Expand | |
|---|---|---|---|---|
| 1 | Thallium Radioisotopes | 100 | + | |
| 2 | Tritium | 73 | + | |
| 3 | Iodine Radioisotopes | 71 | + | |
| 4 | Carbon Radioisotopes | 64 | + | |
| 5 | Gallium Radioisotopes | 50 | + | |
| 6 | Nitrogen Radioisotopes | 50 | + | |
| 7 | Fluorine Radioisotopes | 47 | + | |
| 8 | Radioactive Tracers | 46 | + | |
| 9 | Sodium Radioisotopes | 36 | + | |
| 10 | Indium Radioisotopes | 26 | + | |
| 11 | Phosphorus Radioisotopes | 22 | + | |
| 12 | Chromium Radioisotopes | 15 | + | |
| 13 | Krypton Radioisotopes | 15 | + | |
| 14 | Calcium Radioisotopes | 15 | + | |
| 15 | Rubidium Radioisotopes | 13 | + | |
| 16 | Xenon Radioisotopes | 12 | + | |
| 17 | Oxygen Radioisotopes | 11 | + | |
| 18 | Iron Radioisotopes | 7 | + |