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) Cardiovascular Research Foundation
    11. (1 articles) Columbia University
    12. (1 articles) Harbin Medical University
    13. (1 articles) Bo Yu
    14. (1 articles) Jingbo Hou
    15. (1 articles) Gary S. Mintz
  3. Popular Articles

  4. Picture Gallery

    Variable underlying morphology of culprit plaques associated with ST-elevation myocardial infarction: an optical coherence tomography analysis from the SMART trial Comparison of optical coherence tomography and intravascular ultrasound for evaluation of coronary lipid-rich atherosclerotic plaque progression and regression Central corneal thickness determination in corneal edema using ultrasound pachymetry, a Scheimpflug camera, and anterior segment OCT On the horizon: Optical imaging for cutaneous squamous cell carcinoma Optical Imaging of the Optic Nerve: Beyond Demonstration of Retinal Nerve Fiber Layer Loss. Detecting signs of retinal leakage in exudative AMD using Cirrus OCT versus SL SCAN-1, a novel integrated FD-OCT into a common slit lamp Feature Of The Week 4/26/2015: Optical Teardown of a Kindle Paperwhite Display by OCT Optical coherence tomography: guided primary percutaneous coronary intervention in acute myocardial infarction. A bridge too far? Clinical assessment of retinal changes by spectral-domain OCT Complete 360° circumferential gonioscopic optical coherence tomography imaging of the iridocorneal angle Confocal Adaptive Optics Imaging of Peripapillary Nerve Fiber Bundles: Implications for Glaucomatous Damage Seen on Circumpapillary OCT Scans The diagnostic accuracy of spectral-domain optical coherence tomography for neovascular age-related macular degeneration: a comparison with fundus fluorescein angiography