Shear wave speed recovery in sonoelastography using crawling wave data

Kui Lin, Joyce McLaughlin, Paul Renzi, Ashley Thomas

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The crawling wave experiment, in which two harmonic sources oscillate at different but nearby frequencies, is a development in sonoelastography that allows real-time imaging of propagating shear wave interference patterns. Previously the crawling wave speed was recovered and used as an indicator of shear stiffness; however, it is shown in this paper that the crawling wave speed image can have artifacts that do not represent a change in stiffness. In this paper, the locations and shapes of some of the artifacts are exhibited. In addition, a differential equation is established that enables imaging of the shear wave speed, which is a quantity strongly correlated with shear stiffness change. The full algorithm is as follows: (1) extract the crawling wave phase from the spectral variance data; (2) calculate the crawling wave phase wave speed; (3) solve a first-order PDE for the phase of the wave emanating from one of the sources; and (4) compute and image the shear wave speed on a grid in the image plane.

Original languageEnglish
Pages (from-to)88-97
Number of pages10
JournalJournal of the Acoustical Society of America
Volume128
Issue number1
DOIs
Publication statusPublished - 1 Jul 2010

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Elasticity Imaging Techniques
Artifacts
S waves
recovery
stiffness
artifacts
shear
pulse detonation engines
Waves
Recovery
differential equations
grids
interference
harmonics

ASJC Scopus subject areas

  • Acoustics and Ultrasonics
  • Medicine(all)

Cite this

Shear wave speed recovery in sonoelastography using crawling wave data. / Lin, Kui; McLaughlin, Joyce; Renzi, Paul; Thomas, Ashley.

In: Journal of the Acoustical Society of America, Vol. 128, No. 1, 01.07.2010, p. 88-97.

Research output: Contribution to journalArticle

Lin, Kui ; McLaughlin, Joyce ; Renzi, Paul ; Thomas, Ashley. / Shear wave speed recovery in sonoelastography using crawling wave data. In: Journal of the Acoustical Society of America. 2010 ; Vol. 128, No. 1. pp. 88-97.
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