Radionuclide | Half-life | Maximum energy | Mean energy | Maximum range |
---|---|---|---|---|
89Sr | 50.5 days | 1.4 MeV (β) | 0.583 MeV (β) | 7 mm |
186Re | 3.7 days | 1.07 MeV (β) | 0.362 MeV (β) | 5 mm |
153Sm | 1.9 days | 0.81 MeV (β) | 0.229 MeV (β) | 4 mm |
223Ra | 11.4 days | 5.78 MeV (α) (average) | <100 μm |
89Sr, 153SM and 223Ra are approved for clinical use both in Europe and the USA; 186Re is approved in some European countries only.