Noise-correlation-based elastography using digital holography in anisotropic media

Agathe Marmin; Simon Chatelin; Stefan Catheline; Amir Nahas

doi:10.1117/12.2578645

5 March 2021 Noise-correlation-based elastography using digital holography in anisotropic media

Agathe Marmin, Simon Chatelin, Stefan Catheline, Amir Nahas

Proceedings Volume 11645, Optical Elastography and Tissue Biomechanics VIII; 116451E (2021) https://doi.org/10.1117/12.2578645
Event: SPIE BiOS, 2021, Online Only

Conference Poster

Abstract

We present here our latest results on noise correlation based optical elastography using off-axis digital elastography. In this study, noise correlation elastography is used to access quantitative measurement of stiffness anisotropy. The principle is to numerically refocus the diffuse shear wave field at each pixel using noise-correlation algorithms. The refocusing gives not only access to the local shear wave wavelength directly related to the local shear wave speed but also to the mechanical anisotropy through the 2D shape of the refocusing. The method is validated on finite difference simulation and first experimental measure is presented.

Conference Presentation

Citation Download Citation

Agathe Marmin, Simon Chatelin, Stefan Catheline, and Amir Nahas "Noise-correlation-based elastography using digital holography in anisotropic media", Proc. SPIE 11645, Optical Elastography and Tissue Biomechanics VIII, 116451E (5 March 2021); https://doi.org/10.1117/12.2578645

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