Real time visualization of shear wave propagation in soft...

Details Real time visualization of shear wave propagation in soft... Real time visualization of shear wave propagation in soft...

2006-02-17

2008-11-04

Williams, Hezron (Department: 2856)

Measuring and testing

Vibration

By mechanical waves

C600S438000, C600S443000

Reexamination Certificate

active

07444875

ABSTRACT:
An ultrasound system visualizes shear wave propagation in real time by slowing down the propagation of the shear wave as seen by the ultrasound probe. The shear wave source propagates shear waves into the medium at a frequency ω. The ultrasound probe is vibrated by a vibrator at the frequency ω−Δω, where Δω is much smaller than ω. The wave propagation as seen by the ultrasound probe is slowed down by a factor Δω/ω. An appropriate value of Δω allows real-time visualization of the wave propagation. Variations include electronically producing a virtual vibration and the use of multiple shear wave sources.

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Wu, et al., “Shear Wave Interferometry and Holography, an Application of Sonoelastography,” School of Engineering and Applied Sciences, University of Rochester, 2005.

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