Influence of Early Bladder Imaging in Experimental Rabbits on the Quantitative Determination of Glomerular Filtration Rate by the Gates Method

Table 1

Comparison of bladder radiotracer uptake and its contribution from renal filtration between 1-2 min and 2-3 min after injection.

Bladder radiotracer	Unit	1-2 min				2-3 min
			Minimum	Maximum			Minimum	Maximum
Uptake rate	%	12	0.20	0.80		68	0.14	4.04		2.800	0.006
Contribution from total renal filtration	ml/min	12	1.81	7.37		68	1.21	37.20		2.830	0.006
Contribution from left renal filtration	ml/min	12	1.81	7.37		68	1.11	37.20		2.723	0.008
Contribution from right renal filtration	ml/min	3	2.10	2.35		12	1.11	12.94		4.029	0.002

Notes: GFR—glomerular filtration rate; SD—standard deviation; —number of dynamic renal scintigraphy scans presenting the entire bladder in the field of view and having bladder radiotracer uptake in 1-2 min or 2-3 min.