1. Articles from natasha a. befrui

    1-4 of 4
    1. Concentration effect on the diffusion of glucose in ocular tissues

      In this study, optical coherence tomography (OCT) was utilized in the functional imaging of glucose diffusion through scleral tissues. Permeability coefficients for different concentrations of glucose were quantified nondestructively. Obtained results indicate an inverse proportionality between the permeability coefficient and the concentration of the analyte in epithelial tissues: in-depth diffusion of solutions with lower glucose concentration was faster than those with a higher concentration. The permeability coefficient decreased from (1.67±0.17)×10−5 cm/s of 10% glucose solution to (5.08±0.23)×10−6 cm/s of 25% glucose solution. The dependence of the permeability on ...
      Read Full Article
    2. The effect of solution concentration on diffusion in scleral tissues

      Mohamad G. Ghosn, Esteban F. Carbajal, Natasha A. Befrui et al. The calculation of permeability coefficient of analytes could potentially be used in a variety of basic science and clinical fields, as well as advanced diagnostic imaging. Before this can occur, a more thorough understanding of the diffusion rate of analytes in biological tissues is needed. For thi ... [Proc. SPIE 6791, 679107 (2008)] published Mon Jun 9, 2008.
      Read Full Article
    3. Differential permeability rate and percent clearing of glucose in different regions in rabbit sclera

      Mohamad G. Ghosn, Esteban F. Carbajal, Natasha A. Befrui et al. Imaging of biological tissues with optical coherence tomography (OCT) poses a great interest for its capability to noninvasively outline subsurface microstructures within tissues. However, a major limitation for many optical imaging techniques is inadequate depth penetration of light in turbid media ... [J. Biomed. Opt. 13, 021110 (2008)] published Mon Apr 21, 2008.
      Read Full Article
    4. Permeability of hyperosmotic agent in normal and atherosclerotic vascular tissues

      Noninvasive cardiovascular imaging could lead to the early detection and timely treatment of complex atherosclerotic lesions responsible for major cardiovascular events. Recent investigations have suggested that optical coherence tomography (OCT) is an ideal diagnostic tool due to the high resolution this technology achieves in discriminating the different features of atherosclerotic lesions based on structural imaging. We explore the capability of OCT for functional imaging of normal and atherosclerotic aortic tissues based on time- and depth-resolved quantification of the permeability of biomolecules through these tissues. The permeability coefficient of 20% aqueous solution of glucose was found to be (6.80±0 ...
      Read Full Article
    1-4 of 4
  1. Categories

    1. Applications:

      Art, Cardiology, Dentistry, Dermatology, Developmental Biology, Gastroenterology, Gynecology, Microscopy, NDE/NDT, Neurology, Oncology, Ophthalmology, Other Non-Medical, Otolaryngology, Pulmonology, Urology
    2. Business News:

      Acquisition, Clinical Trials, Funding, Other Business News, Partnership, Patents
    3. Technology:

      Broadband Sources, Probes, Tunable Sources
    4. Miscellaneous:

      Jobs & Studentships, Student Theses, Textbooks
  2. Topics in the News

    1. (4 articles) University of Houston
    2. (4 articles) Kirill V. Larin
    3. (4 articles) Mohamad G. Ghosn
    4. (3 articles) Saratov State University
    5. (3 articles) Valery V. Tuchin
    6. (1 articles) Cardiovascular Research Foundation
    7. (1 articles) Columbia University
    8. (1 articles) Armando Tellez
    9. (1 articles) Juan F. Granada
  3. Popular Articles

  4. Picture Gallery

    Optical coherence tomography angiography in pituitary tumor The multiple scattering limit in optical microscopy Plaque Progression: Slow Linear or Rapid Stepwise? The use of optical coherence tomography angiography in pachychoroid spectrum diseases: a concurrent comparison with dye angiography Visualizing Micro-anatomical Structures of the Posterior Cornea with Micro-optical Coherence Tomography Deep capillary plexus impairment in patients with type 1 diabetes mellitus with no signs of diabetic retinopathy revealed using optical coherence tomography angiography Tissue characterization with depth-resolved attenuation coefficient and backscatter term in intravascular optical coherence tomography images Long-term Invasive Follow-up of Bioresorbable Vascular Scaffold: Optical Coherence Tomography Assessment of Jailed Side Branches Characteristics of early filtering blebs that predict successful trabeculectomy identified via three-dimensional anterior segment optical coherence tomography DETECTION OF TREATMENT-NAIVE CHOROIDAL NEOVASCULARIZATION IN AGE-RELATED MACULAR DEGENERATION BY SWEPT SOURCE OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY Serial 3-Vessel Optical Coherence Tomography and Intravascular Ultrasound Analysis of Changing Morphologies Associated With Lesion Progression in Patients With Stable Angina Pectoris Photoreceptor Layer Thickness Changes During Dark Adaptation Observed With Ultrahigh-Resolution Optical Coherence Tomography