Table 1. Biodistribution of ¹⁸F-FEL in T3M4 tumor-bearing mice after injection.

Organ	Time after injection (min)
	5	30	60	120
Blood	9.58 ± 0.51	2.31 ± 0.67	0.87 ± 0.31	0.29 ± 0.12
Brain	0.67 ± 0.23	0.16 ± 0.04	0.10 ± 0.02	0.06 ± 0.03
Heart	3.81 ± 0.62	0.88 ± 0.25	0.38 ± 0.10	0.20 ± 0.04
Lung	2.29 ± 0.35	1.91 ± 0.42	0.71 ± 0.37	0.38 ± 0.11
Liver	2.12 ± 0.21	1.36 ± 0.07	0.83 ± 0.23	0.59 ± 0.09
Pancreas	2.90 ± 1.28	0.69 ± 0.33	0.63 ± 0.34	0.29 ± 0.07
Kidney	19.4 ± 4.76	9.59 ± 1.80	4.35 ± 1.53	2.08 ± 0.74
Spleen	1.89 ± 0.62	0.77 ± 0.19	0.56 ± 0.30	0.30 ± 0.17
Intestine	2.57 ± 0.30	0.94 ± 0.16	0.56 ± 0.35	0.20 ± 0.07
Muscle	2.50 ± 0.15	0.91 ± 0.12	0.77 ± 0.30	0.15 ± 0.07
Stomach	3.60 ± 0.64	1.03 ± 0.33	0.82 ± 0.61	0.24 ± 0.17
Bone	1.34 ± 0.23	0.60 ± 0.26	0.31 ± 0.02	0.12 ± 0.02
Tumor	6.67 ± 0.42	3.24 ± 0.11	1.03 ± 0.09	0.65 ± 0.12

Note: Data are mean %ID/g ± SD (n = 5).