Dispersion analysis in skin using FEM: Characterizing the effects of the lower boundary material on the propagation of shear waves

Conference Paper

Skin represents a complex structure for the quantification of viscoelastic (VE) properties using shear waves. Wave propagation through skin has been modeled as propagating both as a Lamb wave and as a Rayleigh wave, but both assumptions are limited due to the structure of the skin, which is a multi-layered tissue. This complexity of structure makes it difficult to accurately assess the relative contributions of geometry and viscosity to shear wave dispersion. In this study we used finite element modeling (FEM) to simulate the layering and VE properties of skin and subcutaneous tissues to assess characteristics of shear wave propagation through skin. Results were compared to the expected solutions using pure Rayleigh wave or Lamb wave models. From the simulation it was established that under most physiological circumstances the Lamb wave model is more appropriate than the Rayleigh wave model, higher frequencies should be used for viscoelasticity characterization, and imaging thicker regions of skin facilitates higher accuracy for characterizing its VE properties.

Full Text

Duke Authors

Cited Authors

  • Pely, A; Nightingale, KR; Palmeri, ML

Published Date

  • November 1, 2016

Published In

Volume / Issue

  • 2016-November /

Electronic International Standard Serial Number (EISSN)

  • 1948-5727

International Standard Serial Number (ISSN)

  • 1948-5719

International Standard Book Number 13 (ISBN-13)

  • 9781467398978

Digital Object Identifier (DOI)

  • 10.1109/ULTSYM.2016.7728410

Citation Source

  • Scopus