Table 1.

Physical properties of ⁴⁴Sc and ⁶⁸Ga

	β+ rate	Mean β+ energy	Mean β+ range (*)	γ rate (**)	Mainly γ	Half-life
44Sc	94.3%	0.63 MeV	2.3 mm	> 99.9%	1157 keV	4.04 h
68Ga	89%	0.83 MeV	2.9 mm	3.6%	1077 keV	1.13 h

(*) in water/tissue, (**) in stabilization process