Noninvasive generation and measurement of propagating waves in arterial walls

The Journal of the Acoustical Society of America
Xiaoming Zhang, James F Greenleaf

Abstract

Arterial wall stiffness can be associated with various diseases. Arteriosclerosis involves the buildup of plaques within artery walls that stiffen the arteries. The stiffness of an artery can be assessed by measurement of the pulse wave velocity (PWV). Usually, PWV is estimated using the foot-to-foot method. However, the foot of the pressure wave is not very clear due to reflected waves. Also, the blood pressure wave generated by the heart is normally a low frequency wave, hence the time resolution is low. PWV is an average indicator of artery stiffness between the two measuring positions, and therefore cannot easily identify local stiffness. In this paper a force on the arterial wall is generated noninvasively by the radiation force of ultrasound. Techniques for measuring the propagating wave due to this localized force are studied. The excitation force can be either a very short pulse or a modulated cw signal of a few hundred hertz. The temporal resolution of this method, which is in the range of microseconds, is much higher than the conventional pressure PWV method, and therefore allows the wave velocity to be measured accurately over short distances of a few millimeters.

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Citations

Aug 26, 2010·Annals of Biomedical Engineering·Brian Sweetman, Andreas A Linninger
Nov 26, 2008·Ultrasound in Medicine & Biology·Russell H BehlerCaterina M Gallippi
Jan 8, 2008·The Journal of the Acoustical Society of America·Matthew W Urban, James F Greenleaf
Jun 15, 2007·Ultrasound in Medicine & Biology·Ross WilliamsF Stuart Foster
Nov 23, 2006·Ultrasound in Medicine & Biology·Douglas DumontCaterina M Gallippi
Oct 26, 2013·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Yi ZhengSiping Chen
Oct 10, 2006·IEEE Transactions on Medical Imaging·Matthew W UrbanJames F Greenleaf
Jan 29, 2009·IEEE Transactions on Bio-medical Engineering·Wojciech KalataFrancis Loth
Nov 7, 2008·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Matthew W UrbanJames Greenleaf
May 29, 2009·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Douglas DumontGregg Trahey
Jul 15, 2015·IEEE Transactions on Medical Imaging·Iason Zacharias ApostolakisElisa E Konofagou
Dec 1, 2012·Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine·Ke ChenYi Zheng
Feb 28, 2017··J. F. GreenleafA. Alizad

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