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Article Dans Une Revue Biomedical optics express Année : 2020

Measuring cell displacements in opaque tissues: dynamic light scattering in the multiple scattering regime

Résumé

Coherent light scattered by tissues brings structural and dynamic information, at depth, that standard imaging techniques cannot reach. Dynamics of cells or sub-cellular elements can be measured thanks to dynamic light scattering in thin samples (single scattering regime) or thanks to diffusive wave spectroscopy in thick samples (diffusion regime). Here, we address the intermediate regime and provide an analytical relationship between scattered light fluctuations and the distribution of cell displacements as a function of time. We illustrate our method by characterizing cell motility inside half millimeter thick multicellular aggregates.
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Dates et versions

hal-02612914 , version 1 (19-05-2020)

Identifiants

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Benjamin Brunel, Vincent Levy, Arnaud Millet, Monika Elzbieta Dolega, Antoine Delon, et al.. Measuring cell displacements in opaque tissues: dynamic light scattering in the multiple scattering regime. Biomedical optics express, 2020, 11 (4), pp.2277. ⟨10.1364/BOE.388360⟩. ⟨hal-02612914⟩
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