Archives of Acoustics, 9, 1-2, pp. 251-256, 1984

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

M. POHL
Institut of Medical Physics and Biophysics
Germany

M. O. WENDT
Institut of Medical Physics and Biophysics
Germany

G. PARDEMANN
Institut of Medical Physics and Biophysics
Germany

D. LERCHE
Institut of Medical Physics and Biophysics
Germany

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.
Full Text: PDF
Copyright © Polish Academy of Sciences & Institute of Fundamental Technological Research (IPPT PAN).

References

D. M. STEVENSON, A. P. YOGANATHAN, R. H. FRANCH, The Bjork-Shiley heart valve prostheses, Scand. J. Thor. Cardiovasc. Surg., 16, 1.7 (1982).

H. REUL, In-vitro evaluation of artificial heart valves, Adv. Cardiovasc, Phys., 5, IV, 16-30 (1983).

K. B. CHANDRAN, B. KHALIGHI, Ch.-J. CHEN, H. L. FALSETTI, Th. L. YEARWOOD, L. F. HIRATZKA, Effect of valve orientation on flow development past aortic valve prostheses in a model human aorta, J. Thorac. Cardiovasc. Surg., 85, 893-901 (1983).

R. PELISSIER, F. CASSOT, D. FARAHIFAR, W. BIALONSKI, P. ISSARTIER, H. BODARD, A. FRIGGI, Simulateur cardiovasculaire, Innov. Tech. Biol. Med., 4, 1, 33-45 (1983).

J. R. WOMERSLEY, Oscillatory motion of a viscous liquid in a thin-walled elastic tube I. The linear approximation for long waves, Phil. Mag., 46, 199-221 (1955).