Summary Characteristics of Commonly Used Radionuclides in RPT
| Isotope | Primary emission | Half-life | LET | Maximum range in tissue (therapeutic radiation) |
|---|---|---|---|---|
| 211At | α | 7.21 h | High | 80 μm |
| 212Pb | α | 10.6 h | High | 100 μm |
| 213Bi | α | 45.6 min | High | 100 μm |
| 223Ra | α | 11.4 d | High | 70 μm |
| 225Ac | α | 10.0 d | High | 85 μm |
| 227Th | α | 18.7 d | High | 70 μm |
| 67Cu | β | 61.8 h | Low | 2.1 mm |
| 90Y | β | 64.1 h | Low | 11 mm |
| 131I | β | 8.02 d | Low | 3.3 mm |
| 153Sm | β | 46.5 h | Low | 3.3 mm |
| 177Lu | β | 6.65 d | Low | 1.8 mm |