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
    10. (1 articles) Tufts University
    11. (1 articles) Columbia University
    12. (1 articles) University of Bern
    13. (1 articles) Donald C. Hood
    14. (1 articles) Jay S. Duker
    15. (1 articles) Nadia K. Waheed
    16. (1 articles) Topcon Medical Systems
  3. Popular Articles

  4. Picture Gallery

    Optical coherence tomography- vs. intravascular ultrasound-guided percutaneous coronary intervention (Editorial) Professor Donald Hood to headline at the National OCT Conference (nieuws) Non-destructive analysis of flake properties in automotive paints with full-field optical coherence tomography and 3D segmentation Diagnosing Choroidal Neovascularization in Asymptomatic Individuals Using Optical Coherence Tomography Angiography Foveal avascular zone area after macula-off rhegmatogenous retinal detachment repair: an optical coherence tomography angiography study Glaucomatous changes in lamina pores shape within the lamina cribrosa using wide bandwidth, femtosecond mode-locked laser OCT Volume analysis and display of information in optical coherence tomography angiography System and method for intravascular structural analysis compensation of chemical analysis modality Feature Of The Week 07/24/2017: Spectral Domain Optical Coherence Tomography for Non-Destructive Testing of Protection Coatings on Metal Substrates Impact of Cigarette Smoking and Smoking Cessation on Stent Changes as Determined by Optical Coherence Tomography after Sirolimus Stent Implantation New Non-invasive Techniques to Quantify Skin Surface Strain and Sub-surface Layer Deformation of Finger-pad during Sliding Morphometric parameters of the optic disk in normal and glaucomatous eyes based on time-domain optical coherence tomography image analysis