Table 2.

Hemodynamic parameters: summary statistics

Parameter*	Normal (n=8)	Mild atherosclerosis (n=8)	Moderate atherosclerosis (n=7)	Severe atherosclerosis (n=7)	Carotid web (n=17)	P value†
rAUC total	1.08 (0.33)	1.00 (0.42)	1.10 (0.36)	0.90 (0.63)	1.44 (0.39)	<0.001
rAUC WI	1.15 (0.44)	0.80 (1.7)	1.15 (1.1)	0.84 (0.93)	1.4 (0.96)	0.368
rAUC WO	1.09 (0.75)	1.25 (0.89)	1.01 (0.83)	0.90 (0.47)	1.69 (0.70)	0.031
rFWHM	1.10 (0.21)	0.97 (0.32)	1.00 (0.49)	1.02 (0.38)	1.43 (0.50)	0.001
rTTP	1.00 (0.13)	1.00 (0.37)	1.33 (0.75)	1.00 (0.67)	1.00 (0.46)	0.882
rMS	0.95 (0.40)	0.95 (0.61)	1.10 (0.23)	0.52 (0.68)	1.00 (0.30)	0.105

*All hemodynamic parameters are reported as median (IQR).

†P values: Kruskal-Wallis test, r: relative (normalized to distal common carotid).

AUC, area under the curve; FWHM, full width at half maximum; MS, maximum slope during wash in; TTP, time to peak; WI, wash in; WO, wash out.