| Active principles | Rating | Bibliogr. | Expand | |
|---|---|---|---|---|
| 1 | Iodine Radioisotopes | 100 | + | |
| 2 | Xenon Radioisotopes | 69 | + | |
| 3 | Sodium Radioisotopes | 41 | + | |
| 4 | Tritium | 31 | + | |
| 5 | Calcium Radioisotopes | 29 | + | |
| 6 | Nitrogen Radioisotopes | 29 | + | |
| 7 | Thallium Radioisotopes | 24 | + | |
| 8 | Chromium Radioisotopes | 13 | + | |
| 9 | Oxygen Radioisotopes | 13 | + | |
| 10 | Carbon Radioisotopes | 7 | + | |
| 11 | Radioactive Tracers | 7 | + | |
| 12 | Phosphorus Radioisotopes | 5 | + |