Figure 3From: Contrast-enhanced ultrasonography to evaluate changes in renal cortical microcirculation induced by noradrenaline: a pilot studyPerfusion indices patient per patient. (a) Raw data (arbitrary units). (b) Percentage change from baseline. Grey bars are for patients (Pt) with chronic hypertension (Pt 5, 7 and 10). MAP, mean arterial pressure.Back to article page