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

Publication ,  Conference
Pely, A; Nightingale, KR; Palmeri, ML
Published in: IEEE International Ultrasonics Symposium, IUS
November 1, 2016

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.

Duke Scholars

Published In

IEEE International Ultrasonics Symposium, IUS

DOI

EISSN

1948-5727

ISSN

1948-5719

Publication Date

November 1, 2016

Volume

2016-November
 

Citation

APA
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ICMJE
MLA
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Pely, A., Nightingale, K. R., & Palmeri, M. L. (2016). Dispersion analysis in skin using FEM: Characterizing the effects of the lower boundary material on the propagation of shear waves. In IEEE International Ultrasonics Symposium, IUS (Vol. 2016-November). https://doi.org/10.1109/ULTSYM.2016.7728410
Pely, A., K. R. Nightingale, and M. L. Palmeri. “Dispersion analysis in skin using FEM: Characterizing the effects of the lower boundary material on the propagation of shear waves.” In IEEE International Ultrasonics Symposium, IUS, Vol. 2016-November, 2016. https://doi.org/10.1109/ULTSYM.2016.7728410.
Pely A, Nightingale KR, Palmeri ML. Dispersion analysis in skin using FEM: Characterizing the effects of the lower boundary material on the propagation of shear waves. In: IEEE International Ultrasonics Symposium, IUS. 2016.
Pely, A., et al. “Dispersion analysis in skin using FEM: Characterizing the effects of the lower boundary material on the propagation of shear waves.” IEEE International Ultrasonics Symposium, IUS, vol. 2016-November, 2016. Scopus, doi:10.1109/ULTSYM.2016.7728410.
Pely A, Nightingale KR, Palmeri ML. Dispersion analysis in skin using FEM: Characterizing the effects of the lower boundary material on the propagation of shear waves. IEEE International Ultrasonics Symposium, IUS. 2016.

Published In

IEEE International Ultrasonics Symposium, IUS

DOI

EISSN

1948-5727

ISSN

1948-5719

Publication Date

November 1, 2016

Volume

2016-November