Using level set based inversion of arrival times to recover shear wave speed in transient elastography and supersonic imaging

Joyce McLaughlin, Paul Renzi

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

Transient elastography and supersonic imaging are promising new techniques for characterizing the elasticity of soft tissues. Using this method, an 'ultrafast imaging' system (up to 10 000 frames s-1) follows in real time the propagation of a low-frequency shear wave. The displacement of the propagating shear wave is measured as a function of time and space. Here we develop a fast level set based algorithm for finding the shear wave speed from the interior positions of the propagating front. We compare the performance of level curve methods developed here and our previously developed (McLaughlin J and Renzi D 2006 Shear wave speed recovery in transient elastography and supersonic imaging using propagating fronts Inverse Problems 22 681-706) distance methods. We give reconstruction examples from synthetic data and from data obtained from a phantom experiment accomplished by Mathias Fink's group (the Laboratoire Ondes et Acoustique, ESPCI, Université Paris VII).

Original languageEnglish
Pages (from-to)707-725
Number of pages19
JournalInverse Problems
Volume22
Issue number2
DOIs
Publication statusPublished - 1 Apr 2006
Externally publishedYes

Fingerprint

Time of Arrival
Shear waves
Wave Speed
Level Set
Inversion
Imaging
Imaging techniques
Soft Tissue
Phantom
Synthetic Data
Inverse problems
Imaging System
Imaging systems
Low Frequency
Elasticity
Inverse Problem
Interior
Recovery
Propagation
Tissue

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Signal Processing
  • Mathematical Physics
  • Computer Science Applications
  • Applied Mathematics

Cite this

Using level set based inversion of arrival times to recover shear wave speed in transient elastography and supersonic imaging. / McLaughlin, Joyce; Renzi, Paul.

In: Inverse Problems, Vol. 22, No. 2, 01.04.2006, p. 707-725.

Research output: Contribution to journalArticle

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