Frequency dispersion of wave velocity in arterial vessels

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Pulse wave velocity in an artery is a very important indicator of the stiffness and disease of the artery. Pulse wave velocity in an artery is measured with the standard pulse delay technique. However, the precise timing of the pressure wave is difficult due to the presence of reflected waves. In this paper we propose to generate a wave of a few hundred Hz in an artery by localized radiation force of ultrasound. This wave attenuates very quickly, in a few centimeters, due to the viscoelasticity of the artery and surrounding tissues. Therefore, no reflected wave exists. The wave velocity can be measured accurately by the phase change versus distance. The frequency dispersion of wave velocity is also described because the pulse wave velocity method does not consider dispersion. A new theoretic model is proposed to investigate the wave propagation in arteries. The model is substantiated by in vitro experiments.

Original languageEnglish (US)
Title of host publication2004 2nd IEEE International Symposium on Biomedical Imaging
Subtitle of host publicationMacro to Nano
Pages1347-1350
Number of pages4
StatePublished - Dec 1 2004
Event2004 2nd IEEE International Symposium on Biomedical Imaging: Macro to Nano - Arlington, VA, United States
Duration: Apr 15 2004Apr 18 2004

Publication series

Name2004 2nd IEEE International Symposium on Biomedical Imaging: Macro to Nano
Volume2

Other

Other2004 2nd IEEE International Symposium on Biomedical Imaging: Macro to Nano
CountryUnited States
CityArlington, VA
Period4/15/044/18/04

ASJC Scopus subject areas

  • Engineering(all)

Fingerprint Dive into the research topics of 'Frequency dispersion of wave velocity in arterial vessels'. Together they form a unique fingerprint.

  • Cite this

    Zhang, X., Fatemi, M., & Greenleaf, J. F. (2004). Frequency dispersion of wave velocity in arterial vessels. In 2004 2nd IEEE International Symposium on Biomedical Imaging: Macro to Nano (pp. 1347-1350). (2004 2nd IEEE International Symposium on Biomedical Imaging: Macro to Nano; Vol. 2).