| Active principles | Rating | Bibliogr. | Expand | |
|---|---|---|---|---|
| 1 | Thallium Radioisotopes | 100 | + | |
| 2 | Nitrogen Radioisotopes | 49 | + | |
| 3 | Iodine Radioisotopes | 16 | + | |
| 4 | Phosphorus Radioisotopes | 10 | + | |
| 5 | Iridium Radioisotopes | 9 | + | |
| 6 | Oxygen Radioisotopes | 7 | + | |
| 7 | Strontium Radioisotopes | 7 | + | |
| 8 | Tin Radioisotopes | 5 | + | |
| 9 | Radioactive Tracers | 5 | + | |
| 10 | Rubidium Radioisotopes | 5 | + | |
| 11 | Indium Radioisotopes | 4 | + | |
| 12 | Carbon Radioisotopes | 3 | + | |
| 13 | Yttrium Radioisotopes | 3 | + | |
| 14 | Tritium | 2 | + |