Figure 3.

Creation of physiological flow velocity profiles. The envelope-data of flow velocity profiles obtained by duplex measurements in normal internal carotid arteries of healthy subjects are supplied to a custom-built computer program controlling a progressing cavity pump that excites a replication of the measured flows in the tube model. Thereby and by adjusting the modulating valve, for the first lysis experiments flow velocity curves and pulse pressure waves of a fictitious patient suffering from hypertension were generated. MP = mean pressure.