| Active principles | Rating | Bibliogr. | Expand | |
|---|---|---|---|---|
| 1 | Iodine Radioisotopes | 100 | + | |
| 2 | Thallium Radioisotopes | 53 | + | |
| 3 | Carbon Radioisotopes | 26 | + | |
| 4 | Gallium Radioisotopes | 21 | + | |
| 5 | Tritium | 20 | + | |
| 6 | Radioactive Tracers | 18 | + | |
| 7 | Fluorine Radioisotopes | 13 | + | |
| 8 | Nitrogen Radioisotopes | 13 | + | |
| 9 | Chromium Radioisotopes | 8 | + | |
| 10 | Indium Radioisotopes | 5 | + |