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13 March 2024 Line source excitation for accurate reconstruction of all three shear moduli in skin using non-contact optical coherence elastography (OCE)
Gabriel Regnault, Ruikang K. Wang, Matthew O'Donnell, Ivan Pelivanov
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Proceedings Volume PC12844, Optical Elastography and Tissue Biomechanics XI; PC1284403 (2024) https://doi.org/10.1117/12.2692090
Event: SPIE BiOS, 2024, San Francisco, California, United States
Abstract
Evaluating biomechanical properties is crucial to manage skin care and help guide skin cosmetic and reconstruction procedures. Wave-based OCE tracks mechanical waves propagating along the skin surface, where wave speed is used to reconstruct skin elasticity. The first obstacle to quantifying skin elasticity is anisotropy, i.e. 3 shear moduli must be determined. Second, the surface wave group velocity, usually measured experimentally, is very different from the phase velocity needed for elasticity reconstruction. Here we propose methods to overcome these challenges, test the methods using numerical simulations and use them to reconstruct all shear moduli in human skin in vivo.
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Gabriel Regnault, Ruikang K. Wang, Matthew O'Donnell, and Ivan Pelivanov "Line source excitation for accurate reconstruction of all three shear moduli in skin using non-contact optical coherence elastography (OCE)", Proc. SPIE PC12844, Optical Elastography and Tissue Biomechanics XI, PC1284403 (13 March 2024); https://doi.org/10.1117/12.2692090
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KEYWORDS
Skin
Elasticity
Phase velocity
Algorithm development
Anisotropy
Numerical simulations
Plane waves
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