Table 2 Flow rate (mean, sd) measured using ultrasound and using a transit-time flowmeter. The end column shows the difference in individual animals (median, range).

	Ultrasound flow (ml.min−1)	Transit-time flow (ml.min−1)	p-value	Difference %
Separate (II, III)	4.1 (5.0)	5.6 (3.2)	0.16	137 (11–2 900)
Simultaneous (I)	11.9 (10.0)	7.5 (4.6)	0.24	42 (12–1 450)
Rat femoral	1.00 (0.81)	2.2 (0.6)	0.04*	138 (21–2112)
Rat carotid	11.8 (7.4)	9.0 (2.3)	0.23	28 (11–178)
Mouse carotid	1.2 (0.6)	5.2 (3.0)	0.04*	171 (136–2900)

*Statistically significant