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 total1.08 (0.33)1.00 (0.42)1.10 (0.36)0.90 (0.63)1.44 (0.39) <0.001
rAUC WI1.15 (0.44)0.80 (1.7)1.15 (1.1)0.84 (0.93)1.4 (0.96)0.368
rAUC WO1.09 (0.75)1.25 (0.89)1.01 (0.83)0.90 (0.47)1.69 (0.70) 0.031
rFWHM1.10 (0.21)0.97 (0.32)1.00 (0.49)1.02 (0.38)1.43 (0.50) 0.001
rTTP1.00 (0.13)1.00 (0.37)1.33 (0.75)1.00 (0.67)1.00 (0.46)0.882
rMS0.95 (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.