Orthogonal frequency ultrasound vibrometry

Yi Zheng, Aiping Yao, Shigao Chen, Matthew W. Urban, Randy Kinnick, James F. Greenleaf

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

1 Scopus citations

Abstract

New vibration pulses are proposed to increase the power of shear waves induced by ultrasound radiation force in a tissue region with a preferred spectral distribution. The new pulses are sparsely sampled from an orthogonal frequency wave composed of several sinusoidal signals. Those sinusoidal signals have different frequencies and are orthogonal to each other. The phase and amplitude of each sinusoidal signal are adjusted to control the shape of the orthogonal frequency wave. Amplitude of the sinusoidal signal is increased as its frequency increases to compensate for higher loss at higher frequency in the tissue region. The new vibration pulses and detection pulses can be interleaved for array transducer applications. The experimental results show that the new vibration pulses significantly increases induced tissue vibration with the same peak ultrasound intensity, compared with the binary vibration pulses.

Original languageEnglish (US)
Title of host publicationASME 2010 International Mechanical Engineering Congress and Exposition, IMECE 2010
Pages859-863
Number of pages5
DOIs
StatePublished - Dec 1 2010
EventASME 2010 International Mechanical Engineering Congress and Exposition, IMECE 2010 - Vancouver, BC, Canada
Duration: Nov 12 2010Nov 18 2010

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volume2

Other

OtherASME 2010 International Mechanical Engineering Congress and Exposition, IMECE 2010
CountryCanada
CityVancouver, BC
Period11/12/1011/18/10

ASJC Scopus subject areas

  • Mechanical Engineering

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  • Cite this

    Zheng, Y., Yao, A., Chen, S., Urban, M. W., Kinnick, R., & Greenleaf, J. F. (2010). Orthogonal frequency ultrasound vibrometry. In ASME 2010 International Mechanical Engineering Congress and Exposition, IMECE 2010 (pp. 859-863). (ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE); Vol. 2). https://doi.org/10.1115/IMECE2010-39095