β-Emitting and α-emitting radionucleotides for RIT of NHL

RadionucleotidesEmissionHalf-lifeEnergy (keV)Path length
β-Emitting radionucleotide
90Yβ2.67 days2,28012 mm
131Iβ, γ8.02 days6060.2–1 mm
Lutetium-177 (177Lu)β, γ6.68 days4980.23 mm
α-Emitting radionucleotide
Astatine-211 (211At)α, electron capture (EC)7.21 h5,870 (41.8%), 7,450 (58.2%)-
Plumbum-212 (212Pb)α, β, γ10.64 h6,051 (36%), 8,875 (64%)-
Bismuth-213 (213Bi)α, β, γ46 min8,376-
Actinium-225 (225Ac)α, β, γ10 days5,830, 6,341, 7,067, 8,376-
Thorium-227 (227Th)α, β, γ18.72 days5,716, 6,038, 6,623, 6,819, 7,386-

The path length of α-emitting radionucleotides is around 50–100 µm. Energies from α-emitting radionucleotides include those of daughter nucleotides. The data in parentheses indicates emission rates. -: no data