. 2023 Dec;64(12):1855–1857. doi: 10.2967/jnumed.123.266171

TABLE 1.

Physical Properties of ⁶¹Cu vs. Commonly Used PET Radionuclides

Physical property	⁶¹Cu	⁶⁴Cu	⁶⁸Ga	¹⁸F
Half-life (h)	3.33	12.7	1.13	1.83
Decay, yield (%)	β⁺ 61	β⁺ 17.9	β⁺ 88.9	β⁺ 96.7
	EC 39	EC 43.5	EC 11.1	EC 3.3
		β⁺ 39.0
Eβ⁺ (keV)
Maximum	1,216	653	1,899	635
Mean	500	278	830	250
β⁺ range in water (mm)
Maximum	5.2	2.5	9.6	2.4
Mean	1.3	0.7	2.4	0.6

EC = electron capture.