Selected Bone-Seeking Radionuclides Circa Early 1960s
| Nuclide | Half-life | Energy |
| 140Ba | 12.8 d | 0.306- and 0.540-MeV γ and 0.48-MeV β |
| 47Ca | 4.7 d | 1.31-MeV γ and multiple β |
| 68Ga | 1.13 h | 0.511-MeV annihilation radiation |
| 85Sr | 64 d | 0.51-MeV γ |
| 87mSr | 2.8 h | 0.388-MeV γ |