1. Columbia University

    0 Comments Leave a Comment

    1-15 of 211 1 2 3 4 ... 12 13 14 »
    1. Mentioned In 211 Articles

    2. Quantitative progression of retinitis pigmentosa by optical coherence tomography angiography

      Quantitative progression of retinitis pigmentosa by optical coherence tomography angiography
      Optical coherence tomography angiography (OCT-A) is a non-invasive alternative to fluorescein angiography that allows for the study of the retinal and choroidal vasculatures. In this retrospective cohort study of 28 patients with retinitis pigmentosa (RP), we used OCT-A to quantify changes in perfusion density, foveal avascular zone (FAZ) area, and choriocapillaris blood flow over time and correlated these variables with ellipsoid zone (EZ) line width and best-corrected visual acuity (BCVA ...
      Read Full Article
    3. Using Anterior Segment Optical Coherence Tomography to Monitor Disease Progression in Peripheral Ulcerative Keratitis

      Using Anterior Segment Optical Coherence Tomography to Monitor Disease Progression in Peripheral Ulcerative Keratitis
      We report two cases of peripheral ulcerative keratitis (PUK) imaged with anterior segment optical coherence tomography (AS-OCT). The first patient had prolonged nonsteroidal anti-inflammatory drug use, while the second had inflammatory arthritis by laboratory findings without any systemic findings as well as possible concurrent tuberculosis. In both patients, AS-OCT demonstrated corneal thinning at the onset of the disease with improvement six months after initiation of intensive medical therapy. Our cases ...
      Read Full Article
    4. Algorithmic Approach for Optical Coherence Tomography–Guided Stent Implantation During Percutaneous Coronary Intervention

      Algorithmic Approach for Optical Coherence Tomography–Guided Stent Implantation During Percutaneous Coronary Intervention
      Intravascular imaging plays a key role in optimizing outcomes for percutaneous coronary intervention (PCI). Optical coherence tomography (OCT) utilizes a user-friendly interface and provides high-resolution images. OCT can be used as part of daily practice in all stages of a coronary intervention: baseline lesion assessment, stent selection, and stent optimization. Incorporating a standardized, algorithmic approach when using OCT allows for precision PCI.
      Read Full Article
    5. Establishment of healing profile and neointimal transformation in the new polymer-free Biolimus A9-coated coronary stent by longitudinal sequential optical coherence tomography assessments: The EGO-BIOFREEDOM study

      Establishment of healing profile and neointimal transformation in the new polymer-free Biolimus A9-coated coronary stent by longitudinal sequential optical coherence tomography assessments: The EGO-BIOFREEDOM study
      Aims: In patients at high bleeding risk treated with 1 month of dual antiplatelet therapy, the polymer-free, biolimus A9-coated BioFreedom stent (BFS) was found safer and more efficacious than bare metal stents. We used sequential optical coherence tomography (OCT) to assess the time course of strut coverage and neointimal transformation from 1 to 9 months. Methods and results: We randomly assigned 104 BFS recipients to 1 of 5 groups with ...
      Read Full Article
    6. Comparison of Widefield and Circumpapillary Circle Scans for Detecting Glaucomatous Neuroretinal Thinning on Optical Coherence Tomography

      Comparison of Widefield and Circumpapillary Circle Scans for Detecting Glaucomatous Neuroretinal Thinning on Optical Coherence Tomography
      Purpose : Our purpose was to compare the effectiveness of detecting progressive retinal nerve fiber layer (RNFL) thickness changes using widefield scans compared to circumpapillary circle scans derived from optic disc volume scans when using a manual region-of-interest (ROI) approach . Methods : In a prospective observational study, a total of 125 eyes diagnosed clinically with glaucoma or suspected glaucoma that had both widefield (12 9 mm) and optic disc (6 6 mm ...
      Read Full Article
    7. Adapting a commercial spectral domain optical coherence tomography system for time-locked displacement and physiological measurements

      Adapting a commercial spectral domain optical coherence tomography system for time-locked displacement and physiological measurements
      Measuring vibration within the cochlear partition is important to understand sound transduction and nonlinear amplification within the cochlea. Here we describe the customization of a commercially available Spectral Domain Optical Coherence Tomography system, the Thorlabs Telesto, for displacement measurements in the cochlea using a technique called Spectral Domain Phase Microscopy (SDPM). The paper describes the SDOCT data analysis pipeline composed of background subtraction, interpolation, and spectral shaping of the raw ...
      Read Full Article
    8. The Effectiveness of Excimer Laser Angioplasty to Treat Coronary In-Stent Restenosis With Peri-stent Calcium as Assessed by Optical Coherence Tomography

      The Effectiveness of Excimer Laser Angioplasty to Treat Coronary In-Stent Restenosis With Peri-stent Calcium as Assessed by Optical Coherence Tomography
      ..., New York, NY; Center for Interventional Vascular Therapy, Division of Cardiology, Presbyterian Hospital and Columbia University, New York, NY; St. Francis Hospital-The Heart Center, Roslyn, NY.; 11. Clinical Trials Cen...
      Read Full Article
    9. Bifurcation and Ostial Optical Coherence Tomography Mapping (BOOM) – Case Description of a Novel Bifurcation Stent Technique

      Bifurcation and Ostial Optical Coherence Tomography Mapping (BOOM) – Case Description of a Novel Bifurcation Stent Technique
      Stent placement guided by angiography alone is often inexact, but of increased importance with bifurcation percutaneous coronary intervention (PCI). We describe a novel technique using optical coherence tomography (OCT)-guided angiographic co-registration termed Bifurcation and Ostial OCT Mapping (BOOM). The technique is based on the precise identification and mapping of the side-branch ostium using co-registration to minimize protrusion of stent struts into the main branch while ensuring full coverage of ...
      Read Full Article
    10. Evaluation of a Qualitative Approach for Detecting Glaucomatous Progression Using Wide-Field Optical Coherence Tomography Scans

      Evaluation of a Qualitative Approach for Detecting Glaucomatous Progression Using Wide-Field Optical Coherence Tomography Scans
      Purpose : To determine the effectiveness of detecting glaucomatous progression by a qualitative evaluation of wide-field (12 9 mm) scans on optical coherence tomography imaging. This method was compared to a conventional quantitative analysis of the global circumpapillary retinal nerve fiber layer (cpRNFL) thickness. Methods : A total of 409 eyes with a clinical diagnosis of glaucoma or suspected glaucoma for which two wide-field scans were obtained at least 1 year apart ...
      Read Full Article
    11. Optical coherence tomography reveals complex motion between the basilar membrane and organ of corti in the gerbil cochlea

      Optical coherence tomography reveals complex motion between the basilar membrane and organ of corti in the gerbil cochlea
      The mechanical basis of auditory transduction within the mammalian cochlea is not fully understood but relies on complex mechanical interactions between different structures within the Organ of Corti (OoC). We used spectral domain phase microscopy, a functional extension of optical coherence tomography (OCT), to measure the sound-evoked motion in response to Zwuis frequency complexes,in vivo, in the basal region of the gerbil cochlea. Because OCT allows for measurements from ...
      Read Full Article
    12. Evaluation of a Region-of-Interest Approach for Detecting Progressive Glaucomatous Macular Damage on Optical Coherence Tomography

      Evaluation of a Region-of-Interest Approach for Detecting Progressive Glaucomatous Macular Damage on Optical Coherence Tomography
      Purpose : To evaluate a manual region-of-interest (ROI) approach for detecting progressive macular ganglion cell complex (GCC) changes on optical coherence tomography (OCT) imaging. Methods : One hundred forty-six eyes with a clinical diagnosis of glaucoma or suspected glaucoma with macular OCT scans obtained at least 1 year apart were evaluated. Changes in the GCC thickness were identified using a manual ROI approach (ROI M ), whereby region(s) of observed or suspected ...
      Read Full Article
    13. Heterogeneity study of the human cervix between the internal os and the external os using optical coherence tomography

      Heterogeneity study of the human cervix between the internal os and the external os using optical coherence tomography
      The regional heterogeneity study of cervical ultrastructure is critical to understand the cervical functions like cervical softening and dilation. To better understand why the internal os initiates the premature remodeling, we present the heterogeneity study of collagen fiber network, tissue optical property, and mechanical property between the internal os and external os using optical coherence tomography (OCT) and indentation test. Pregnant (n=1) and non-pregnant patients (n=8) were consented ...
      Read Full Article
    14. Detecting Glaucomatous Progression With a Region-of-Interest Approach on Optical Coherence Tomography: A Signal-to-Noise Evaluation

      Detecting Glaucomatous Progression With a Region-of-Interest Approach on Optical Coherence Tomography: A Signal-to-Noise Evaluation
      Purpose : To compare two region-of-interest (ROI) approaches and a global thickness approach for capturing progressive circumpapillary retinal nerve fiber layer (cpRNFL) changes on optical coherence tomography (OCT) imaging. Methods : Progressive cpRNFL thickness changes were evaluated in 164 eyes with a clinical diagnosis of glaucoma or suspected glaucoma; all eyes underwent optic disc OCT imaging on two visits at least 1 year apart. Such changes were evaluated with a manual ROI ...
      Read Full Article
    15. Optical coherence tomography in gastroenterology: a review and future outlook

      Optical coherence tomography in gastroenterology: a review and future outlook
      Optical coherence tomography (OCT) is an imaging technique optically analogous to ultrasound that can generate depth-resolved images with micrometer-scale resolution. Advances in fiber optics and miniaturized actuation technologies allow OCT imaging of the human body and further expand OCT utilization in applications including but not limited to cardiology and gastroenterology. This review article provides an overview of current OCT development and its clinical utility in the gastrointestinal tract, including disease ...
      Read Full Article
    16. 1-15 of 211 1 2 3 4 ... 12 13 14 »
  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. About Columbia University

    Columbia University

    Columbia University.  From its beginnings in a schoolhouse in lower Manhattan, Columbia University has grown to encompass two principal campuses: the historic, neoclassical campus in the Morningside Heights neighborhood and the modern Medical Center further uptown, in Washington Heights. Today, Columbia is one of the top academic and research institutions in the world, conducting pathbreaking research in medicine, science, the arts, and the humanities. It includes three undergraduate schools, thirteen graduate and professional schools, and a school of continuing education.