Table 1. Pharmacokinetic Results of Different Radiotracers (n = 4).

parameter	Ga-68 folate	Ga-68 albumin	Ga-68 RGD	Ga-68 DOTA-MAL
r2	0.9450	0.9673	0.9123	0.9592
kα (min–1)	0.56 ± 0.15	0.77 ± 0.43	0.65 ± 0.11	0.93 ± 0.27
kβ (min–1)	0.03 ± 0.01	0.03 ± 0.01	0.02 ± 0.01	0.1 ± 0.04
t1/2α (min)	1.33 ± 0.32	1.22 ± 0.65	1.11 ± 0.22	0.82 ± 0.26
t1/2β (min)	23.7 ± 5.71	25.09 ± 5.06	30.82 ± 8.59	8.08 ± 2.76