Laser Physics

, Volume 22, Issue 9, pp 1439–1444

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

Authors

  • Ravi Kiran Manapuram
    • Department of Mechanical EngineeringUniversity of Houston
  • S. Aglyamov
    • Department of Biomedical EngineeringUniversity of Texas at Austin
  • F. M. Menodiado
    • Department of Biomedical EngineeringUniversity of Houston
  • M. Mashiatulla
    • Department of Biomedical EngineeringUniversity of Houston
  • Shang Wang
    • Department of Biomedical EngineeringUniversity of Houston
  • S. A. Baranov
    • Department of Biomedical EngineeringUniversity of Houston
  • Jiasong Li
    • Department of Biomedical EngineeringUniversity of Houston
  • S. Emelianov
    • Department of Biomedical EngineeringUniversity of Texas at Austin
    • Department of Mechanical EngineeringUniversity of Houston
    • Department of Biomedical EngineeringUniversity of Houston
    • Institute of Optics and BiophotonicsSaratov State University
Laser Methods in Chemistry, Biology, and Medicine

DOI: 10.1134/S1054660X12090101

Cite this article as:
Manapuram, R.K., Aglyamov, S., Menodiado, F.M. et al. Laser Phys. (2012) 22: 1439. doi:10.1134/S1054660X12090101

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