Identification of a New Peptide for Fibrosarcoma Tumor Targeting and Imaging In Vivo

Table 2

Tumor-to-tissue ratios of % ID/g calculated from the biodistribution of [¹³¹I]-TK4 at different time points.

Tumor-to-organ ratio	1 hr	4 hr	24 hr
Intestine	0.20	0.22	1.25
Spleen	0.89	1.28	2.96
Liver	0.17	0.46	0.67
Kidney	0.07	0.07	0.03
Heart	0.60	2.38	2.15
Lung	0.33	1.39	0.98
Thyroid	0.66	3.31	2.44
Brain	4.00	22.81	6.73
Muscle	1.10	5.73	3.15
Tumor	1.00	1.00	1.00