Laser Physics

, Volume 22, Issue 9, pp 1439–1444 | Cite as

Estimation of shear wave velocity in gelatin phantoms utilizing PhS-SSOCT

  • Ravi Kiran Manapuram
  • S. Aglyamov
  • F. M. Menodiado
  • M. Mashiatulla
  • Shang Wang
  • S. A. Baranov
  • Jiasong Li
  • S. Emelianov
  • K. V. Larin
Laser Methods in Chemistry, Biology, and Medicine

Abstract

We report a method for measuring shear wave velocity in soft materials using phase stabilized swept source optical coherence tomography (PhS-SSOCT). Wave velocity was measured in phantoms with various concentrations of gelatin and therefore different stiffness. Mechanical waves of small amplitudes (∼10 μm) were induced by applying local mechanical excitation at the surface of the phantom. Using the phase-resolved method for displacement measurement described here, the wave velocity was measured at various spatially distributed points on the surface of the tissue-mimicking gelatin-based phantom. The measurements confirmed an anticipated increase in the shear wave velocity with an increase in the gelatin concentrations. Therefore, by combining the velocity measurements with previously reported measurements of the wave amplitude, viscoelastic mechanical properties of the tissue such as cornea and lens could potentially be measured.

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Copyright information

© Pleiades Publishing, Ltd. 2012

Authors and Affiliations

  • Ravi Kiran Manapuram
    • 1
  • S. Aglyamov
    • 2
  • F. M. Menodiado
    • 3
  • M. Mashiatulla
    • 3
  • Shang Wang
    • 3
  • S. A. Baranov
    • 3
  • Jiasong Li
    • 3
  • S. Emelianov
    • 2
  • K. V. Larin
    • 1
    • 3
    • 4
  1. 1.Department of Mechanical EngineeringUniversity of HoustonHoustonUSA
  2. 2.Department of Biomedical EngineeringUniversity of Texas at AustinAustinUSA
  3. 3.Department of Biomedical EngineeringUniversity of HoustonHoustonUSA
  4. 4.Institute of Optics and BiophotonicsSaratov State UniversitySaratovRussia

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