1. Articles from Sukyoung Ryu

    1-3 of 3
    1. Retinal Blood Vessel Caliber Estimation for Optical Coherence Tomography Angiography Images Based on 3D Superellipsoid Modeling

      Retinal Blood Vessel Caliber Estimation for Optical Coherence Tomography Angiography Images Based on 3D Superellipsoid Modeling

      Changes of retinal blood vessel calibers may reflect various retinal diseases and even several non-retinal diseases. We propose a new method to estimate retinal vessel calibers from 3D optical coherence tomography angiography (OCTA) images based on 3D modeling using superellipsoids. Taking advantage of 3D visualization of the retinal tissue microstructures in vivo provided by OCTA, our method can detect retinal blood vessels precisely, estimate their calibers reliably, and show the relative flow speed visually.

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    2. Wide dynamic range high-speed three-dimensional quantitative OCT angiography with a hybrid-beam scan

      Wide dynamic range high-speed three-dimensional quantitative OCT angiography with a hybrid-beam scan

      We demonstrate a novel hybrid-beam scanning-based quantitative optical coherence tomography angiography (OCTA) that provides high-speed wide dynamic range blood flow speed imaging. The hybrid-beam scanning scheme enables multiple OCTA image acquisitions with a wide range of multiple time intervals simultaneously providing wide dynamic range blood flow speed imaging independent of the blood vessel orientation, which was quantified over a speed range of 0.6 ∼ 104    mm / s 0.6∼104  mm/s through the blood flow phantom experiments. A fully automated high-speed hybrid-beam scanning-based quantitative OCTA system demonstrates visualization of blood flow speeds in various vessels from the main arteries ...

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    3. GPU-Accelerated Framework for Intracoronary Optical Coherence Tomography Imaging at the Push of a Button

      GPU-Accelerated Framework for Intracoronary Optical Coherence Tomography Imaging at the Push of a Button

      Frequency domain optical coherence tomography (FD-OCT) has become one of the important clinical tools for intracoronary imaging to diagnose and monitor coronary artery disease, which has been one of the leading causes of death. To help more accurate diagnosis and monitoring of the disease, many researchers have recently worked on visualization of various coronary microscopic features including stent struts by constructing three-dimensional (3D) volumetric rendering from series of cross-sectional intracoronary FD-OCT images. In this paper, we present the first, to our knowledge, "push-of-a-button" graphics processing unit (GPU)-accelerated framework for intracoronary OCT imaging. Our framework visualizes 3D microstructures of the ...

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    1-3 of 3
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  2. Topics in the News

    1. (3 articles) Harvard University
    2. (3 articles) Korea Advanced Institute of Science and Technology
    3. (3 articles) Massachusetts General Hospital
    4. (3 articles) Wang Yuhl Oh
    5. (1 articles) Benjamin J. Vakoc
    6. (1 articles) Brett E. Bouma
    7. (1 articles) University of Illinois at Urbana-Champaign
    8. (1 articles) Duke University
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    11. (1 articles) Sina Farsiu
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    GPU-Accelerated Framework for Intracoronary Optical Coherence Tomography Imaging at the Push of a Button Wide dynamic range high-speed three-dimensional quantitative OCT angiography with a hybrid-beam scan Retinal Blood Vessel Caliber Estimation for Optical Coherence Tomography Angiography Images Based on 3D Superellipsoid Modeling IMAGING TECHNIQUE FROM BECKMAN LAB NAMED TOP 10 MICROSCOPY INNOVATION Optical coherence refraction tomography University of Southern California Receives NIH Grant for Imaging Cerebral and Retinal Microvasculature in Cerebral Small Vessel Disease Columbia University Receives NIH Grant  for Measures of Human Receptor and post Receptor Activity Multimodal Imaging of Multiple Evanescent White Dot Syndrome: A New Interpretation MULTIMODAL IMAGING AND TREATMENT OF SYPHILITIC CHOROIDAL NEOVASCULARIZATION Highly coherent supercontinuum generation in CS2 infiltrated single-core optical fiber Glioma cell migration dynamics in brain tissue assessed by multimodal optical imaging Optical Coherence Tomography Angiography in Monitoring Proliferative Macular Telangiectasia Type 2 Treatment Response