1. Combined impedance spectroscopy and Fourier domain optical coherence tomography to monitor cells in three-dimensional structures

    Combined impedance spectroscopy and Fourier domain optical coherence tomography to monitor cells in three-dimensional structures
    Objectives: To assess non-invasively and in real time the three- dimensional organization of cells within porous matrices by combining Fourier Domain Optical Coherence Tomography (FDOCT) and Impedance Spectroscopy (IS). Materials and Methods: Broadband interferences resulting from the recombination of in-depth light scattering events within the sample and light from a reference arm are measured as a modulation of the spectrum generated by a superluminescent laser diode (?o = 930nm, FWHM 90nm). Fourier transform allows in-depth localization of the scatterers, and the 3D microstructure of the sample is reconstructed by raster scanning. Simultaneously impedance spectroscopy is performed with a dielectric probe connected ...
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