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RESEARCH PAPERS

Model Studies of Nonsteady Flow Using Magnetic Resonance Imaging

[+] Author and Article Information
Ding-Yu Fei

Biomedical Engineering Program, Medical College of Virginia, Virginia Commonwealth University, Richmond, VA 23298

Kenneth A. Kraft

Medical College of Virginia, Virginia Commonwealth University, Richmond, VA 23298

Panos P. Fatouros

Department of Radiology, Medical College of Virginia, Virginia Commonwealth University, Richmond, VA 23298

J Biomech Eng 112(1), 93-99 (Feb 01, 1990) (7 pages) doi:10.1115/1.2891132 History: Received July 24, 1989; Revised October 02, 1989; Online March 17, 2008

Abstract

A bolus-tracking magnetic resonance imaging (MRI) method has been employed to measure velocity profiles for oscillatory flow with and without a steady flow component as well as pulsatile flow in an axisymmetric tube model. A range of flow conditions within normal physiological limits was tested. The imaged velocity profiles were observed to be generally in accord with theoretical predictions. Instantaneous flow rates calculated from the MR images agreed well with those assessed using an ultrasonic flowmeter. Because MRI is noninvasive and poses few risks to subjects, this technique is potentially useful for studying vascular hemodynamics in vivo.

Copyright © 1990 by The American Society of Mechanical Engineers
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