Assessment of lamb wave dispersion in cornea using shear wave imaging optical coherence tomography (SWI-OCT)

Shang Wang, Kirill V. Larin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

The characteristics of lamb wave propagation in cornea can be of great importance for the quantitative measurement of corneal viscoelasticity. Here, we report the use of shear wave imaging optical coherence tomography (SWI-OCT) to assess the dispersion of lamb wave propagation in an ex vivo rabbit cornea. The temporal displacement profile of lamb wave propagation is obtained with SWI-OCT. From the spectral analysis on the corneal lamb wave, the phase information of the wave propagation can be extracted, which is used to quantify the phase velocity at different frequencies. The dependence of the phase on the propagation distance is presented with 2-D depth-resolved mapping at typical frequency components with micro-scale spatial resolution. Results indicate that the obtained lamb wave dispersion curve agrees well with the analytical approximation and demonstrate the feasibility of using SWI-OCT to study the dispersion of lamb wave propagation in cornea.

Original languageEnglish
Title of host publicationOptical Elastography and Tissue Biomechanics
DOIs
StatePublished - 2014
EventOptical Elastography and Tissue Biomechanics - San Francisco, CA, United States
Duration: 1 Feb 20142 Feb 2014

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume8946
ISSN (Print)1605-7422

Conference

ConferenceOptical Elastography and Tissue Biomechanics
Country/TerritoryUnited States
CitySan Francisco, CA
Period1/02/142/02/14

Keywords

  • Cornea
  • Lamb wave dispersion
  • Phase velocity
  • Shear wave imaging optical coherence tomography
  • Viscoelasticity

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