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Visualizing ultrasonically induced shear wave propagation using phase-sensitive optical coherence tomography for dynamic elastography

Visualizing ultrasonically induced shear wave propagation using phase-sensitive optical coherence tomography for dynamic elastography

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Authors

  • Thu-Mai Nguyen (Lead / Corresponding author)
  • Shaozhen Song
  • Bastien Arnal
  • Zhihong Huang
  • Matthew O'Donnell
  • Ruikang K. Wang

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Info

Original languageEnglish
Pages (from-to)838-841
Number of pages4
JournalOptics Letters
Volume39
Issue number4
DOIs
StatePublished - 15 Feb 2014

Abstract

We report on the use of phase-sensitive optical coherence tomography (PhS-OCT) to detect and track temporal and spatial shear wave propagation within tissue, induced by ultrasound radiation force. Kilohertz-range shear waves are remotely generated in samples using focused ultrasound emission and their propagation is tracked using PhS-OCT. Cross-sectional maps of the local shear modulus are reconstructed from local estimates of shear wave speed in tissue-mimicking phantoms. We demonstrate the feasibility of combining ultrasound radiation force and PhS-OCT to perform high-resolution mapping of the shear modulus. © 2014 Optical Society of America

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