1. Articles from Marica Marrese

    1-4 of 4
    1. In vivo characterization of chick embryo mesoderm by optical coherence tomography assisted microindentation

      In vivo characterization of chick embryo mesoderm by optical coherence tomography assisted microindentation

      Embryos are growing organisms with highly heterogeneous properties in space and time. Understanding the mechanical properties is a crucial prerequisite for the investigation of morphogenesis. During the last ten years, new techniques have been developed to evaluate the mechanical properties of biological tissues in vivo . To address this need, we employed a new instrument that, via the combination of micro-indentation with Optical Coherence Tomography (OCT), allows us to determine both, the spatial distribution of mechanical properties of chick embryos and the structural changes in real-time provided by OCT. We report here the stiffness measurements on live chicken mesoderm during somite ...

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    2. Micro-indentation and optical coherence tomography for the mechanical characterization of embryos: Experimental setup and measurements on fixed chicken embryos.

      Micro-indentation and optical coherence tomography for the mechanical characterization of embryos: Experimental setup and measurements on fixed chicken embryos.

      The investigation of the mechanical properties of embryos is expected to provide valuable information on the phenomenology of morphogenesis. It is thus believed that, by mapping the viscoelastic features of an embryo at different stages of growth, it may be possible to shed light on the role of mechanics in embryonic development. To contribute to this field, we present a new instrument that can determine spatiotemporal distributions of mechanical properties of embryos over a wide area and with unprecedented accuracy. The method relies on combining ferrule-top micro-indentation, which provides local measurements of viscoelasticity, with Optical Coherence Tomography, which can reveal ...

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    3. Micro-indentation and optical coherence tomography for the mechanical characterization of embryos

      Micro-indentation and optical coherence tomography for the mechanical characterization of embryos

      The investigation of the mechanical properties of embryos is expected to provide valuable information on the phenomenology of morphogenesis. It is thus believed that, by mapping the viscoelastic features of an embryo at different stages of growth, it may be possible to shed light on the role of mechanics in embryonic development. To contribute to this field, we present a new instrument that can determine spatiotemporal distributions of mechanical properties of embryos over a wide area and with unprecedented accuracy. The method relies on combining ferrule-top micro-indentation, which provides local measurements of viscoelasticity, with Optical Coherence Tomography, which can reveal ...

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    4. 70  μm diameter optical probe for common-path optical coherence tomography in air and liquids

      70  μm diameter optical probe for common-path optical coherence tomography in air and liquids

      We investigate and validate a novel method to fabricate ultrathin optical probes for common-path optical coherence tomography (CP-OCT). The probes are obtained using a 65 μm barium titanate microsphere inserted into an inward concave cone chemically etched at the end of a single-mode fiber. We demonstrate that the high refractive index (

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    1-4 of 4
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  2. Topics in the News

    1. (4 articles) VU University Amsterdam
    2. (2 articles) Academic Medical Center at the University of Amsterdam
    3. (2 articles) University Medical Center Utrecht
    4. (1 articles) University of Southern California
    5. (1 articles) UC Irvine
    6. (1 articles) Qifa Zhou
    7. (1 articles) K. Kirk Shung
    8. (1 articles) Heidelberg Engineering
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    70  μm diameter optical probe for common-path optical coherence tomography in air and liquids Micro-indentation and optical coherence tomography for the mechanical characterization of embryos Micro-indentation and optical coherence tomography for the mechanical characterization of embryos: Experimental setup and measurements on fixed chicken embryos. In vivo characterization of chick embryo mesoderm by optical coherence tomography assisted microindentation Optical imaging techniques could offer non-invasive method to measure swelling within the brain, new study finds Using Optical Coherence Tomography as a Surrogate of Measurements of Intracranial Pressure in Idiopathic Intracranial Hypertension Endoscopic imaging in inflammatory bowel disease: current developments and emerging strategies 2D Ultrasonic Array-based Optical Coherence Elastography Optical coherence tomography angiography in diabetic retinopathy: an updated review Flow signal change in polyps after anti-vascular endothelial growth factor therapy Line-field confocal optical coherence tomography-Practical applications in dermatology and comparison with established imaging methods Optical coherence tomography detection of changes in inner retinal and choroidal thicknesses in patients with early retinitis pigmentosa