Characteristics of fluid dynamics in tubes and the outflow tract of an artificial heart, measured with pulsed us doppler technique

Velocity profiles and turbulence intensities of steady flow in tubes were measured with a pulsed ultrasonic-Doppler instrument IMP 30. These results were compared with those of other flow measurement methods.
In a similar way such measurements were performed to study pulsatile flow in the inflow- and the outflow-tract of an artificial heart, developed by the Hospital of Internal Medicine, Wilhelm-Pieck-University, Rostock. The principles of signal acquisition and first results are presented.