1. Articles from rebekah drezek

    1-3 of 3
    1. Multi-system comparison of optical coherence tomography performance with point spread function phantoms

      Multi-system comparison of optical coherence tomography performance with point spread function phantoms

      Point spread function (PSF) phantoms based on unstructured distributions of sub-resolution particles in a transparent matrix have proven effective for evaluating resolution and its spatial variation in optical coherence tomography (OCT) systems. Measurements based on PSF phantoms have the potential to become a standard test method for consistent, objective and quantitative inter-comparison of OCT system performance. Towards this end, we have evaluated three PSF phantoms and investigated their ability to compare the performance of four OCT systems. The phantoms are based on 260-nm-diameter gold nanoshells, submicron-diameter iron oxide particles and 1.5-micron-diameter silica particles. The OCT systems included spectral-domain and ...

      Read Full Article
    2. Three-dimensional characterization of optical coherence tomography point spread functions with a nanoparticle-embedded phantom

      Three-dimensional characterization of optical coherence tomography point spread functions with a nanoparticle-embedded phantom
      We present a novel (to our knowledge) approach for measurement of the three-dimensional point spread function (PSF) of optical coherence tomography (OCT) systems using a nanoparticle-embedded phantom (NEP), toward development of standardized test methods for biophotonic imaging. The NEP comprises highly reflective plasmonic nanoparticles, homogeneously distributed in a transparent silicone matrix. OCT image volumes were analyzed to characterize PSFs in axial and lateral directions at a variety of locations in the NEP. Results indicate submicrometer agreement with conventional approaches to measure dimensions of the PSF. The NEP offers a robust approach for validating and comparing imaging performance of OCT devices.
      Read Full Article
    3. Enhancing contrast in biological imaging

      Methods for enhancing contrast during imaging to assess cell and nuclear morphology of a sample. A contrast agent such as acetic acid, toluidine blue, hypertonic saline, hypotonic saline, Lugol's iodine, an absorbing dye, a liposome, or a contrast agent linked to a marker are applied to a sample. The sample is analyzed with an imaging device to create image data, and the sample is diagnosed using the image data.
      Read Full Article
    1-3 of 3
  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. (2 articles) FDA
    2. (2 articles) Rice University
    3. (2 articles) Anant Agrawal
    4. (1 articles) University of London
    5. (1 articles) University of Maryland
    6. (1 articles) University of Texas at Austin
    7. (1 articles) UK National Physical Laboratory
    8. (1 articles) Pete H. Tomlins
    9. (1 articles) Rebecca Richards-Kortum
    10. (1 articles) Yu Chen
    11. (1 articles) Centre Hospitalier Intercommunal de Créteil
    12. (1 articles) University of Wisconsin
    13. (1 articles) Duke University
    14. (1 articles) Cynthia A. Toth
    15. (1 articles) Richard B. Rosen
    16. (1 articles) Optovue
    17. (1 articles) Leica
    18. (1 articles) Carl Zeiss Meditec
    19. (1 articles) Optos
    20. (1 articles) Heidelberg Engineering
  3. Popular Articles

  4. Picture Gallery

    Three-dimensional characterization of optical coherence tomography point spread functions with a nanoparticle-embedded phantom Multi-system comparison of optical coherence tomography performance with point spread function phantoms Long-Term Arterial Remodeling After Bioresorbable Scaffold Implantation 4-Year Follow-up of Quantitative Coronary Angiography, Histology and Optical Coherence Tomography Visualization of Bacterial Colonization and Cellular Layers in a Gut-on-a-Chip System Using Optical Coherence Tomography Optical Coherence Tomography Measurements as Potential Imaging Biomarkers for Parkinson's Disease: A Systematic Review and Meta-analysis Use of ultra-wide field retinal imaging and optical coherence tomography angiography in the diagnosis of incomplete Susac syndrome Repeatability and agreement of total corneal and sublayer pachymetry with two different algorithms of fourier-domain optical coherence tomography in myopic and post photorefractive keratectomy eyes Monitoring Response to Platelet-Rich Plasma in Patients with Alopecia Areata with Optical Coherence Tomography: A Case Series NONPERFUSION AREA QUANTIFICATION IN BRANCH RETINAL VEIN OCCLUSION: A WIDEFIELD OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY STUDY Nonperfusion Assessment in Retinal Vein Occlusion: Comparison between Ultra-Widefield Fluorescein Angiography and Widefield OCT-Angiography Anatomical Location of the Raphe and Extended Raphe in the Human Retina: Implications for Assessment of the Optic Nerve with OCT Assessing the Influence of OCT-A Device and Scan Size on Retinal Vascular Metrics