Title :
Input Impedance, Wave Travel, and Reflections in the Human Pulmonary Arterial Tree: Studies Using an Electrical Analog
Author :
Pollack, Gerald H. ; Reddy, R.V. ; Noordergraaf, Abraham
Author_Institution :
Dept. of Biomedical Engineering, Moore School of Electrical Engineering, University of Pennsylvania, Philadelphia, Pa. 19104
fDate :
7/1/1968 12:00:00 AM
Abstract :
An electrical model of the human pulmonary arterial tree has been developed using modern oscillatory flow theory. By comparison with corresponding in vivo measurements of 1) pressure and flow waveshapes, 2) input impedance, and 3) apparent phase velocity, this passive, multisegmental, linear delay line model is shown to bear a close resemblance to reality.
Keywords :
Fluid flow measurement; Helium; Humans; Impedance measurement; In vivo; Phase measurement; Pressure measurement; Reflection; Velocity measurement; Viscosity; Electronics, Medical; Humans; Models, Biological; Pulmonary Artery; Vasoconstrictor Agents;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
DOI :
10.1109/TBME.1968.4502559
