TABLE 1

Renogram Parameters for Whole-Kidney and Cortical Regions of Interest of ^99mTc(CO)₃(NTA) Compared with ¹³¹I-OIH in Humans (n = 9)

	Left kidney			Right kidney			Left cortex		Right cortex
Agent	Uptake (%)	TTP (min)	20 min/max	Uptake (%)	TTP (min)	20 min/max	TTP (min)	20 min/max	TTP (min)	20 min/max
^99mTc(CO)₃(NTA)	49.8 (3.4)	3.3 (1.6)	0.15 (0.04)	50.2 (3.4)	3.4 (1.9)	0.16 (0.04)	2.52 (0.51)	0.13 (0.03)	2.6 (0.6)	0.13 (0.02)
¹³¹I-OIH	49.0 (4.1)	2.6 (0.6)	0.11 (0.03)	51.0 (4.1)	2.8 (1.6)	0.11 (0.19)	2.46 (0.73)	0.1 (0.04)	1.98 (0.6)	0.10 (0.02)
P	0.17	0.13	0.01	0.17	0.02	0.004	0.71	0.03	0.02	0.046