1. Hanyang University

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    1. Mentioned In 35 Articles

    2. Optical coherence tomography angiography analysis of changes in the retina and the choroid after haemodialysis

      Optical coherence tomography angiography analysis of changes in the retina and the choroid after haemodialysis
      The purpose of this study is to evaluate the effect of haemodialysis on perfused vessel density, choroidal thickness (CT), and retinal thickness in end-stage renal disease (ESRD) using swept-source optical coherence tomography angiography (SS-OCTA). We studied twenty-nine eyes of 29 ESRD patients by ophthalmologic examination and SS-OCTA before and after haemodialysis. The colour-coded perfusion density maps were generated and perfused vessel density was calculated. Changes in systemic and other ocular ...
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    3. En Face Optical Coherence Tomography Imaging of the Photoreceptor Layers in Hydroxychloroquine Retinopathy

      En Face Optical Coherence Tomography Imaging of the Photoreceptor Layers in Hydroxychloroquine Retinopathy
      Objective To investigate the application of en face optical coherence tomography (OCT) imaging in eyes with hydroxychloroquine (HCQ) retinopathy. Design Retrospective case series Methods: Setting Institutional Patient Population Sixty-two eyes of 31 Asian patients with HCQ retinopathy. Observation Procedures Macular volume scanning using swept-source OCT was performed in 6 6 and 9 9 mm areas centered on the fovea. Segmentation of the photoreceptor layers was automatically performed between the inner ...
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    4. Comprehensive intravascular imaging of atherosclerotic plaque in vivo using optical coherence tomography and fluorescence lifetime imaging

      Comprehensive intravascular imaging of atherosclerotic plaque in vivo using optical coherence tomography and fluorescence lifetime imaging
      Comprehensive imaging of both the structural and biochemical characteristics of atherosclerotic plaque is essential for the diagnosis and study of coronary artery disease because both a plaques morphology and its biochemical composition affect the level of risk it poses. Optical coherence tomography (OCT) and fluorescence lifetime imaging (FLIm) are promising optical imaging methods for characterizing coronary artery plaques morphologically and biochemically, respectively. In this study, we present a hybrid intravascular ...
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    5. Serial Combined Wide-Field Optical Coherence Tomography Maps for Detection of Early Glaucomatous Structural Progression

      Serial Combined Wide-Field Optical Coherence Tomography Maps for Detection of Early Glaucomatous Structural Progression
      Importance Both parapapillary and macular areas are important in determining the progression of early glaucoma. However, no attempt has been made to assess the progression of glaucoma in images that combine the 2 areas. Objective To evaluate the potential usefulness of serial analysis of combined wide-field optical coherence tomography (OCT) maps for detection of structural progression in patients with early glaucoma. Design, Setting, and Participants Retrospective observational study. Patients with ...
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    6. Multispectral analog-mean-delay fluorescence lifetime imaging combined with optical coherence tomography

      Multispectral analog-mean-delay fluorescence lifetime imaging combined with optical coherence tomography
      The pathophysiological progression of chronic diseases, including atherosclerosis and cancer, is closely related to compositional changes in biological tissues containing endogenous fluorophores such as collagen, elastin, and NADH, which exhibit strong autofluorescence under ultraviolet excitation. Fluorescence lifetime imaging (FLIm) provides robust detection of the compositional changes by measuring fluorescence lifetime, which is an inherent property of a fluorophore. In this paper, we present a dual-modality system combining a multispectral analog-mean-delay ...
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    7. Wide scan imaging with swept-source optical coherent tomography for glaucoma diagnosis

      Wide scan imaging with swept-source optical coherent tomography for glaucoma diagnosis
      Purpose To determine glaucoma-discriminating abilities of macular and circumpapillary retinal nerve fiber layer (cpRNFL) thickness measurements of wide scan (12X9mm) using swept-source optical coherence tomography (SS-OCT) compared to measurements of standard macula and disc scans (6 X 6 mm). Methods This retrospective chart review study included 60 glaucomatous and 62 healthy eyes of total 122 subjects who visited a glaucoma clinic and were examined with wide, standard macula, and standard ...
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    8. Optical Coherence Tomography Protocols for Screening of Hydroxychloroquine Retinopathy in Asian Patients

      Optical Coherence Tomography Protocols for Screening of Hydroxychloroquine Retinopathy in Asian Patients
      Purpose To investigate the distribution of outer retinal changes in hydroxychloroquine (HCQ) retinopathy and explore optical coherence tomography (OCT) protocols to maximize the sensitivity of HCQ retinopathy detection in Asian patients. Design Diagnostic validity assessment Methods Setting : Institutional Patient Population : Forty-eight eyes (24 patients) with HCQ retinopathy underwent 6-mm horizontal and vertical line scans and 6 6-mm 2 volume scans using spectral-domain OCT (SD-OCT), and 9-mm line scans and 6 ...
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    9. VISUALIZATION OF THE MACULA IN GAS-FILLED EYES: Spectral Domain Optical Coherence Tomography Versus Swept-Source Optical Coherence Tomography

      VISUALIZATION OF THE MACULA IN GAS-FILLED EYES: Spectral Domain Optical Coherence Tomography Versus Swept-Source Optical Coherence Tomography
      Purpose: To compare the visualization of the macula between spectral domain optical coherence tomography (SD-OCT) and swept-source OCT (SS-OCT) in gas-filled eyes. Methods: Sixty-one patients with common indications of gas tamponade, including 27 with macular holes and 34 with rhegmatogenous retinal detachment, who were treated with vitrectomy and gas tamponade were imaged using both SD-OCT (3D-OCT 2000, Topcon, Tokyo, Japan) and SS-OCT (DRI-OCT, Topcon) at 1, 3, and 7 days ...
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    10. Endoscopic micro-optical coherence tomography with extended depth of focus using a binary phase spatial filter

      Endoscopic micro-optical coherence tomography with extended depth of focus using a binary phase spatial filter
      Micro-optical coherence tomography (OCT) is an advanced imaging technique that acquires a three-dimensional microstructure of biological samples with a high spatial resolution, up to 1 m, by using a broadband light source and a high numerical aperture (NA) lens. As high NA produces a short depth of focus (DOF), extending the DOF is necessary to obtain a reasonable imaging depth. However, due to the complexity of optics and the limited ...
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    11. En face choroidal vascular feature imaging in acute and chronic central serous chorioretinopathy using swept source optical coherence tomography

      En face choroidal vascular feature imaging in acute and chronic central serous chorioretinopathy using swept source optical coherence tomography
      Aims To evaluate the variable depth tomographic features of choroidal vasculature in acute and chronic central serous chorioretinopathy (CSC) using swept source optical coherence tomography (SS-OCT) en face imaging. Methods We retrospectively reviewed the en face SS-OCT images of 29 patients that presented with acute (12 eyes) or chronic (17 eyes) CSC. All of the patient eyes underwent 66 macular scans with SS-OCT (DRI OCT-1, Topcon, Tokyo, Japan), fluorescein angiography ...
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    12. Characterization of lipid-rich plaques using spectroscopic optical coherence tomography

      Characterization of lipid-rich plaques using spectroscopic optical coherence tomography
      Intravascular optical coherence tomography (IV-OCT) is a high-resolution imaging method used to visualize the internal structures of walls of coronary arteries in vivo . However, accurate characterization of atherosclerotic plaques with gray-scale IV-OCT images is often limited by various intrinsic artifacts. In this study, we present an algorithm for characterizing lipid-rich plaques with a spectroscopic OCT technique based on a Gaussian center of mass (GCOM) metric. The GCOM metric, which reflects ...
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    13. Automated detection of vessel lumen and stent struts in intravascular optical coherence tomography to evaluate stent apposition and neointimal coverage

      Automated detection of vessel lumen and stent struts in intravascular optical coherence tomography to evaluate stent apposition and neointimal coverage
      Purpose: Intravascular optical coherence tomography (IV-OCT) is a high-resolution imaging method used to visualize the microstructure of arterial walls in vivo . IV-OCT enables the clinician to clearly observe and accurately measure stent apposition and neointimal coverage of coronary stents, which are associated with side effects such as in-stent thrombosis. In this study, the authors present an algorithm for quantifying stent apposition and neointimal coverage by automatically detecting lumen contours and ...
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    14. Intracoronary dual-modal optical coherence tomography-near-infrared fluorescence structural–molecular imaging with a clinical dose of indocyanine green for the assessment of high-risk plaques and stent-associated inflammation in a beating coronary artery

      Intracoronary dual-modal optical coherence tomography-near-infrared fluorescence structural–molecular imaging with a clinical dose of indocyanine green for the assessment of high-risk plaques and stent-associated inflammation in a beating coronary artery
      Aims Inflammation plays essential role in development of plaque disruption and coronary stent-associated complications. This study aimed to examine whether intracoronary dual-modal optical coherence tomography (OCT)-near-infrared fluorescence (NIRF) structuralmolecular imaging with indocyanine green (ICG) can estimate inflammation in swine coronary artery. Methods and results After administration of clinically approved NIRF-enhancing ICG (2.0 mg/kg) or saline, rapid coronary imaging (20 mm/s pullback speed) using a fully integrated ...
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    15. Design and fabrication of an optical probe with a phase filter for extended depth of focus

      Design and fabrication of an optical probe with a phase filter for extended depth of focus
      The trade-off between spot size and depth of focus (DOF) often limits the performance of optical systems, such as optical coherence tomography and optical tweezers. Although researchers have proposed various methods to extend the DOF in free-space optics, many are difficult to implement in miniaturized optical probes due to space limitations. In this study, we present an optical probe with an extended DOF using a binary phase spatial filter (BPSF ...
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    16. A bi-directional assessment of spontaneous coronary artery dissection by three-dimensional flythrough rending of optical coherence tomography images

      A bi-directional assessment of spontaneous coronary artery dissection by three-dimensional flythrough rending of optical coherence tomography images
      A 71-year-old woman was admitted to our hospital due to unstable chest pain. Coronary angiography demonstrated a complex eccentric lesion with 80% narrowing of the right coronary arterial lumen ( Panel A ). Intravascular optical coherence tomography (IV-OCT) revealed typical characteristics of spontaneous coronary artery...
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  2. About Hanyang University

    Hanyang University

    Hanyang University is one of the most prestigious private universities in South Korea. In particular, Hanyang's School of Engineering is one of the oldest and most selective engineering schools in Korea. Many notable alumni who graduated from Hanyang Engineering school include chairmen, vice chairmen, and CEOs of the nation's leading companies, such as Hyundai, Samsung, and LG. The main campus is Hanyang University, Seoul, with its cluster campus, the ERICA campus (Education Research Industry Cluster at Ansan), located in the city of Ansan. Love in Truth in Deed is the founding principle and educational philosophy of Hanyang University.  Also see Hanyang University College of Medicine.