TABLE 1

Selected PET Radiometals, Their Physical Properties, and Prominent Production Modes

Nuclide	Half-life	E_ßmax (keV)	I_β⁺ (%)	Prominent γ-lines (keV)	Daughter nuclide	Production mode	Nuclear reaction
⁴⁴Sc	3.9 h	1,474	94,3	1,157	⁴⁴Ca	Cyclotron	⁴⁴Ca(p,n)⁴⁴Sc⁻
						Generator	⁴⁵Sc(p,2n)⁴⁴Ti → ⁴⁴Sc
^52gMn	5.5 d	576	30	1,434	⁵²Cr	Cyclotron	⁵²Cr(p,n)⁵²Mn
⁶⁴Cu	12.7 h	653	17.8	1,346	⁶⁴Ni^*/⁶⁴Zn^†	Cyclotron	⁶⁴Ni(p,n)⁶⁴Cu
⁶⁸Ga	67.6 min	1,900	90	1,077	⁶⁸Zn	Generator	⁶⁸Ge → ⁶⁸Ga + β⁻
⁸²Rb	1.3 min	3,350	96	776	⁸²Kr	Generator	⁸²Sr → ⁸²Rb + β⁻
⁸⁶Y	14.7 h	1,248	33	1,077	⁸⁶Sr	Cyclotron	⁸⁶Sr(p,n)⁸⁶Y
⁸⁹Zr	3.3 d	897	22.3	909	⁸⁹Y	Cyclotron	⁸⁹Y(p,n)⁸⁹Zr

↵* Daughter nuclide from positron decay.
↵† Daughter nuclide from β⁻ decay.
E_ßmax = maximum β⁺ energy; I_β⁺ = intensity of β⁺ decay.