1. Articles from Ravikant Samatham

    1-3 of 3
    1. The effect of wavelength on optical properties extracted from images of engineered tissue

      The effect of wavelength on optical properties extracted from images of engineered tissue
      Optical imaging modalities such as confocal microscopy and optical coherence tomography (OCT) are emerging as appealing methods for non-destructive evaluation of engineered tissues. The information offered by such optical imaging methods depends on the wavelength vis-á-vis the optical scattering properties of the sample. These properties affect many factors critical to image analysis in a nonlinear and nontrivial manner. Thus, we sought to characterize the effect wavelength has on the optical properties collagen remodeled by cells at 3 common imaging wavelengths: 488, 633, and 1310 nm. To do this, we seeded smooth muscle cells (SMCs) in soluble collagen gels at a ...
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    2. Evaluating optical properties of isolated biological scatterers from confocal and low-coherence images

      In biomedical optics applications, the scattering of light by biological tissue is typically mimicked by embedding microparticles such as polystyrene microspheres or TiO within a non-scattering matrix. Such particles are well structured and give rise to uniform optical scattering properties. However ... [Proc. SPIE Int. Soc. Opt. Eng. 6870, 68700G (2008)] published Fri Feb 15, 2008.
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    3. Measuring tissue optical properties in vivo using reflectance-mode confocal microscopy and OCT

      The ability to separately measure the scattering coefficient ([mu] [cm]) and the anisotropy (g) is difficult, especially when measuring an in vivo site that can not be excised for bench-top measurements. The scattering properties ([mu] and g) can characterize the ultrastructure of a biological tissu ... [Proc. SPIE Int. Soc. Opt. Eng. 6864, 68640B (2008)] published Fri Feb 15, 2008.
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    1-3 of 3
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    1. (3 articles) Oregon Health & Science University
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