Table 2. Comparison of GFR values obtained by MRI and FITC-sinistrin techniques in healthy SD rats.

SD	GFR [ml/min]
	transcutaneous FITC-sinistrin clearance	DCE-MRI
1	7.23	2.22
2	4.67	2.25
3	5.48	2.63
4	2.58	2.48
5	1.72	1.32
6	3.24	1.52
Mean (sd)	4.34 (± 2.22)	2.10 (± 0.64)

Mean GFR between methods differ by a factor of two.