1. Articles from Sylvain Gigan

    1-2 of 2
    1. Single myelin fiber imaging in living rodents without labeling by deep optical coherence microscopy

      Single myelin fiber imaging in living rodents without labeling by deep optical coherence microscopy
      Myelin sheath disruption is responsible for multiple neuropathies in the central and peripheral nervous system. Myelin imaging has thus become an important diagnosis tool. However, in vivo imaging has been limited to either low-resolution techniques unable to resolve individual fibers or to low-penetration imaging of single fibers, which cannot provide quantitative information about large volumes of tissue, as required for diagnostic purposes. Here, we perform myelin imaging without labeling and at micron-scale resolution with >300-μm penetration depth on living rodents. This was achieved with a prototype [termed deep optical coherence microscopy (deep-OCM)] of a high-numerical aperture infrared full-field optical coherence ...
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    2. Brain refractive index measured in vivo with high-NA defocus-corrected full-field OCT and consequences for two-photon microscopy

      Brain refractive index measured in vivo with high-NA defocus-corrected full-field OCT and consequences for two-photon microscopy
      Two-photon laser scanning microscopy (2PLSM) is an important tool for in vivo tissue imaging with sub-cellular resolution, but the penetration depth of current systems is potentially limited by sample-induced optical aberrations. To quantify these, we measured the refractive index n' in the somatosensory cortex of 7 rats in vivo using defocus optimization in full-field optical coherence tomography (ff-OCT). We found n' to be independent of imaging depth or rat age. From these measurements, we calculated that two-photon imaging beyond 200µm into the cortex is limited by spherical aberration, indicating that adaptive optics will improve imaging depth.
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    1-2 of 2
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    1. (2 articles) ESPCI ParisTech
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    Brain refractive index measured in vivo with high-NA defocus-corrected full-field OCT and consequences for two-photon microscopy Single myelin fiber imaging in living rodents without labeling by deep optical coherence microscopy Instant Stent-Accentuated 3-Dimensional Optical Coherence Tomography of Struts Pulled Up by Pulling Stuck Wire and Folded by Kissing Balloon Dilation A Combined Optical Coherence Tomography and Intravascular Ultrasound Study on Plaque Rupture, Plaque Erosion, and Calcified Nodule in Patients With ST-Segment Elevation Myocardial Infarction : Incidence, Morphologic Characteristics, and Outcomes After Per Comparison of Neoatherosclerosis and Neovascularization Between Patients With and Without Diabetes : An Optical Coherence Tomography Study Computational high-resolution optical imaging of the living human retina Optical Coherence Tomography: Technology and Applications Second Edition (Textbook) Full-field swept-source optical coherence tomography with phase-shifting techniques for skin cancer detection Looking beyond lumen: Optical coherence tomography Relationship of ocular and systemic factors to the visibility of choroidal–scleral interface using spectral domain optical coherence tomography Mapping conduction velocity of early embryonic hearts with a robust fitting algorithm Miniature, minimally invasive, tunable endoscope for investigation of the middle ear