### Abstract

Two new experiments were created to characterize the elasticity of soft tissue using sonoelastography. In both experiments the spectral variance image displayed on a GE LOGIC 700 ultrasound machine shows a moving interference pattern that travels at a very small fraction of the shear wave speed. The goal of this paper is to devise and test algorithms to calculate the speed of the moving interference pattern using the arrival times of these same patterns. A geometric optics expansion is used to obtain Eikonal equations relating the moving interference pattern arrival times to the moving interference pattern speed and then to the shear wave speed. A cross-correlation procedure is employed to find the arrival times; and an inverse Eikonal solver called the level curve method computes the speed of the interference pattern. The algorithm is tested on data from a phantom experiment performed at the University of Rochester Center for Biomedical Ultrasound.

Original language | English |
---|---|

Pages (from-to) | 2438-2446 |

Number of pages | 9 |

Journal | Journal of the Acoustical Society of America |

Volume | 121 |

Issue number | 4 |

DOIs | |

Publication status | Published - 13 Apr 2007 |

Externally published | Yes |

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### ASJC Scopus subject areas

- Arts and Humanities (miscellaneous)
- Acoustics and Ultrasonics

### Cite this

*Journal of the Acoustical Society of America*,

*121*(4), 2438-2446. https://doi.org/10.1121/1.2534717

**Shear wave speed recovery using moving interference patterns obtained in sonoelastography experiments.** / McLaughlin, Joyce; Renzi, Paul; Parker, Kevin; Wu, Zhe.

Research output: Contribution to journal › Article

*Journal of the Acoustical Society of America*, vol. 121, no. 4, pp. 2438-2446. https://doi.org/10.1121/1.2534717

}

TY - JOUR

T1 - Shear wave speed recovery using moving interference patterns obtained in sonoelastography experiments

AU - McLaughlin, Joyce

AU - Renzi, Paul

AU - Parker, Kevin

AU - Wu, Zhe

PY - 2007/4/13

Y1 - 2007/4/13

N2 - Two new experiments were created to characterize the elasticity of soft tissue using sonoelastography. In both experiments the spectral variance image displayed on a GE LOGIC 700 ultrasound machine shows a moving interference pattern that travels at a very small fraction of the shear wave speed. The goal of this paper is to devise and test algorithms to calculate the speed of the moving interference pattern using the arrival times of these same patterns. A geometric optics expansion is used to obtain Eikonal equations relating the moving interference pattern arrival times to the moving interference pattern speed and then to the shear wave speed. A cross-correlation procedure is employed to find the arrival times; and an inverse Eikonal solver called the level curve method computes the speed of the interference pattern. The algorithm is tested on data from a phantom experiment performed at the University of Rochester Center for Biomedical Ultrasound.

AB - Two new experiments were created to characterize the elasticity of soft tissue using sonoelastography. In both experiments the spectral variance image displayed on a GE LOGIC 700 ultrasound machine shows a moving interference pattern that travels at a very small fraction of the shear wave speed. The goal of this paper is to devise and test algorithms to calculate the speed of the moving interference pattern using the arrival times of these same patterns. A geometric optics expansion is used to obtain Eikonal equations relating the moving interference pattern arrival times to the moving interference pattern speed and then to the shear wave speed. A cross-correlation procedure is employed to find the arrival times; and an inverse Eikonal solver called the level curve method computes the speed of the interference pattern. The algorithm is tested on data from a phantom experiment performed at the University of Rochester Center for Biomedical Ultrasound.

UR - http://www.scopus.com/inward/record.url?scp=34047244370&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34047244370&partnerID=8YFLogxK

U2 - 10.1121/1.2534717

DO - 10.1121/1.2534717

M3 - Article

C2 - 17471755

AN - SCOPUS:34047244370

VL - 121

SP - 2438

EP - 2446

JO - Journal of the Acoustical Society of America

JF - Journal of the Acoustical Society of America

SN - 0001-4966

IS - 4

ER -