NDLI: A Method for Measuring Wave Speed Dispersion in Arteries by Resonance

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Zhang, Xiaoming James, F. Greenleaf
Copyright Year	2009
Abstract	Cardiovascular disease (CVD) has been the number one killer in the United States. It has long been recognized that a high percentage of all cardiovascular disease is associated with the hardening of arteries or arteriosclerosis. Several imaging techniques, including x-ray angiography, ultrasound, magnetic resonance imaging (MRI), etc., are available for imaging atherosclerotic arteries. Most imaging techniques measure luminal diameter, wall thickness and plaque volume. However, no current imaging methods can measure elasticity of the arterial wall. Pulse wave velocity (PWV) is a simple and robust method to measure arterial stiffness. However, PWV can not evaluate the local arterial stiffness. We have developed a novel ultrasound method for estimating local elasticity of arteries by the wave speed dispersion. In this paper, we present a method to measure the wave speed dispersion by resonance. Theory was developed to calculate the wave speed in cylindrical tubes. Experiments were done on a rubber tube. The resonance of the tube was generated by an air-coupled ultrasound transducer. The resonance frequency was measured by a laser vibrometer. Theoretical and experimental wave dispersions were compared. This method may be useful in characterizing the elastic properties of arterial samples where the wave speed dispersion can not be easily measured.
Starting Page	453
Ending Page	455
Page Count	3
File Format	PDF
ISBN	9780791843758
DOI	10.1115/IMECE2009-10508
e-ISBN	9780791838631
Volume Number	Volume 2: Biomedical and Biotechnology Engineering
Conference Proceedings	ASME 2009 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2009-11-13
Publisher Place	Lake Buena Vista, Florida, USA
Access Restriction	Subscribed
Subject Keyword	Cardiovascular system X-rays Elasticity Wall thickness Waves Chemical vapor deposition Diseases Ultrasonic transducers Disperse systems Hardening Laser doppler vibrometers Magnetic resonance imaging Imaging Atherosclerosis Resonance Stiffness Rubber Ultrasound
Content Type	Text
Resource Type	Article

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