| Active principles | Rating | Bibliogr. | Expand | |
|---|---|---|---|---|
| 1 | Strontium Radioisotopes | 100 | + | |
| 2 | Calcium Radioisotopes | 96 | + | |
| 3 | Tin Radioisotopes | 35 | + | |
| 4 | Iodine Radioisotopes | 31 | + | |
| 5 | Phosphorus Radioisotopes | 19 | + | |
| 6 | Gallium Radioisotopes | 19 | + | |
| 7 | Indium Radioisotopes | 18 | + | |
| 8 | Lead Radioisotopes | 16 | + | |
| 9 | Fluorine Radioisotopes | 16 | + | |
| 10 | Tritium | 15 | + | |
| 11 | Yttrium Radioisotopes | 12 | + | |
| 12 | Sodium Radioisotopes | 10 | + | |
| 13 | Zinc Radioisotopes | 9 | + | |
| 14 | Carbon Radioisotopes | 9 | + | |
| 15 | Thallium Radioisotopes | 8 | + | |
| 16 | Iron Radioisotopes | 7 | + | |
| 17 | Radioactive Tracers | 7 | + | |
| 18 | Sulfur Radioisotopes | 6 | + | |
| 19 | Copper Radioisotopes | 6 | + | |
| 20 | Chromium Radioisotopes | 5 | + | |
| 21 | Cobalt Radioisotopes | 3 | + | |
| 22 | Cesium Radioisotopes | 3 | + | |
| 23 | Xenon Radioisotopes | 3 | + | |
| 24 | Gold Radioisotopes | 2 | + |