Production of scandium radionuclides for theranostic applications: towards standardization of quality requirements

EJNMMI Radiopharmacy and Chemistry

Table 1 Physical characteristics of relevant Sc radioisotopes

Radionuclide	Half-life	Decay mode	Energy of particles or photons (keV)
⁴³Sc	3.89 h	β⁺	1198
		β⁺	825
		γ	372
^44gSc	3.97 h^a	β⁺	1475
^44gSc	3.97 h^a	γ	1157
^44mSc	58.6 h	γ	271
			1002
			1126
			1157
⁴⁶Sc	83.79 d	β⁻	357
		γ	889
		γ	1121
⁴⁷Sc	3.35 d	β⁻	600
		β⁻	439
		γ	153
		γ	1120
⁴⁸Sc	43.7 h	β⁻	654
		β⁻	485
		γ	183
			1037
			1312

^aIt is worth noting that most of the sources provide the half-life of ⁴⁴Sc T_1/2 = 3.97 h. This value has been recently re-determined by Garcia-Tarrano et al. (Garcia-Torano et al. 2016) to be T_1/2 = 4.042 h, about 2% higher than the earlier recommended value