1. Dong Hoon Choi

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    1. Mentioned In 60 Articles

    2. Randomized Comparison of Strut Coverage between Ticagrelor and Clopidogrel in Acute Myocardial Infarction at 3-Month Optical Coherence Tomography

      Explore KoreaMed Synapse Cardiology
      Randomized Comparison of Strut Coverage between Ticagrelor and Clopidogrel in Acute Myocardial Infarction at 3-Month Optical Coherence Tomography
      Purpose This study aimed to compare the effects of ticagrelor and clopidogrel on early neointimal healing assessed with optical coherence tomography (OCT) after drug-eluting stent (DES) implantation in patients with acute myocardial infarction (AMI). Materials and Methods AMI patients were randomly assigned to either the ticagrelor or clopidogrel arm. After DES implantation, OCT was performed to assess the percentages of uncovered struts immediately after procedure and 3 months later. Results ...
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      Mentions: Yonsei University Jung-Sun Kim Dong Hoon Choi

    3. Characteristics of Earlier Versus Delayed Presentation of Very Late Drug‐Eluting Stent Thrombosis: An Optical Coherence Tomographic Study

      Explore jaha.ahajournals.org Cardiology
      Characteristics of Earlier Versus Delayed Presentation of Very Late Drug‐Eluting Stent Thrombosis: An Optical Coherence Tomographic Study
      Background The pathophysiology underlying very late drug‐eluting stent ( DES ) thrombosis is not sufficiently understood. Using optical coherence tomography, we investigated characteristics of very late stent thrombosis ( VLST ) according to different onset times. Methods and Results A total of 98 patients from 10 South Korean hospitals who underwent optical coherence tomography for evaluation of very late DES thrombosis were retrospectively included in analyses. VLST occurred at a median of 55 ...
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      Mentions: Gary S. Mintz University of Ulsan Yonsei University

    4. Assessing Computational Fractional Flow Reserve From Optical Coherence Tomography in Patients With Intermediate Coronary Stenosis in the Left Anterior Descending Artery

      Explore Circulation Cardiology
      Assessing Computational Fractional Flow Reserve From Optical Coherence Tomography in Patients With Intermediate Coronary Stenosis in the Left Anterior Descending Artery
      Background Intravascular optical coherence tomography (OCT) imaging provides limited information on the functional assessment of coronary stenosis. We evaluated a new approach to OCT imagebased computation modeling, which can be used to estimate the fractional flow reserve (FFR) in patients with intermediate coronary stenosis. Methods and Results Ninety-two patients with intermediate diameter stenosis in the left anterior descending artery underwent both FFR measurement with pressure wires and OCT examination. Using ...
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      Mentions: Cardiovascular Research Foundation Yonsei University Jung-Sun Kim

    5. Development of Advanced Atherosclerotic Plaque by Injection of Inflammatory Proteins in a Rabbit Iliac Artery Model

      Explore KoreaMed Synapse Cardiology
      Development of Advanced Atherosclerotic Plaque by Injection of Inflammatory Proteins in a Rabbit Iliac Artery Model
      Purpose Appropriate animal models of atherosclerotic plaque are crucial to investigating the pathophysiology of atherosclerosis, as well as for the evaluation of the efficacy and safety of vascular devices. We aimed to develop a novel animal model that would be suitable for the study of advanced atherosclerotic lesions in vivo . Materials and Methods Atherosclerotic plaque was induced in 24 iliac arteries from 12 rabbits by combining a high cholesterol diet ...
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      Mentions: Jung-Sun Kim Dong Hoon Choi Yangsoo Jang

    6. Association between fractional flow reserve and coronary plaque characteristics assessed by optical coherence tomography

      Explore Journal of Cardiology Cardiology
      Association between fractional flow reserve and coronary plaque characteristics assessed by optical coherence tomography
      Background The assessment of fractional flow reserve (FFR) in coronary lesions determines the strategy of percutaneous coronary intervention. However, the association between FFR and characteristics of the underlying coronary plaque has not been sufficiently investigated. Methods A total of 110 coronary lesions in 106 patients were evaluated using both FFR and optical coherence tomography (OCT). Coronary plaques were classified into fibrous, fibrocalcific, or fibroatheroma according to OCT evaluation at the ...
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      Mentions: Yonsei University Jung-Sun Kim Dong Hoon Choi

    7. Favorable effect of optimal lipid-lowering therapy on neointimal tissue characteristics after drug-eluting stent implantation: Qualitative optical coherence tomographic analysis

      Explore atherosclerosis-journal.com Cardiology
      Favorable effect of optimal lipid-lowering therapy on neointimal tissue characteristics after drug-eluting stent implantation: Qualitative optical coherence tomographic analysis
      Objective Serial follow-up optical coherence tomography (OCT) was used to evaluate the effect of optimal lipid-lowering therapy on qualitative changes in neointimal tissue characteristics after drug-eluting stent (DES) implantation. Methods DES-treated patients (n=218) who received statin therapy were examined with serial follow-up OCT. First and second follow-up OCT evaluations were performed approximately 6 and 18 months after the index procedure, respectively. Patients were divided into two groups, based on ...
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      Mentions: Yonsei University Jung-Sun Kim Dong Hoon Choi

    8. Three-dimensional optical coherence tomographic analysis of eccentric morphology of the jailed side-branch ostium in coronary bifurcation lesions

      Explore Canadian Journal of Cardiology Cardiology
      Three-dimensional optical coherence tomographic analysis of eccentric morphology of the jailed side-branch ostium in coronary bifurcation lesions
      Background The severity of angiographic diameter stenosis of the jailed side-branch ostium is usually overestimated over the three-dimensional (3D) optical coherence tomography (OCT)-measured actual stenosis. Using the 3D-OCT, morphologic changes in the jailed side-branch ostium were evaluated before and after a single stent crossover at coronary bifurcation lesions. Methods In 109 patients who received a single stent crossover at coronary bifurcation lesions, the pre- and post-intervention minimal lumen area ...
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      Mentions: Yonsei University Jung-Sun Kim Dong Hoon Choi

    9. Optical Coherence Tomographic Observation of In-Stent Neoatherosclerosis in Lesions With More Than 50% Neointimal Area Stenosis After Second-Generation Drug-Elnuting Stent Implantation

      Explore Circulation Cardiology
      Optical Coherence Tomographic Observation of In-Stent Neoatherosclerosis in Lesions With More Than 50% Neointimal Area Stenosis After Second-Generation Drug-Elnuting Stent Implantation
      ...-Wook Kim, MD, 5. Dong-Ho Shin, MD, MPH, 6. Jung-Sun Kim, MD, 7. Byeong-Keuk Kim, MD, 8. Young-Guk Ko, MD, 9. Donghoon Choi, MD, 10. Yangsoo Jang, MD and 11. Myeong-Ki Hong, MD 1. From the Department of Cardiology,...
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      Mentions: University of Ulsan Yonsei University Jung-Sun Kim

    10. Optical Coherence Tomographic Observation of In-Stent Neoatherosclerosis in Lesions With More Than 50% Neointimal Area Stenosis After Second-Generation Drug-Eluting Stent Implantation

      Explore Circulation Cardiology
      Optical Coherence Tomographic Observation of In-Stent Neoatherosclerosis in Lesions With More Than 50% Neointimal Area Stenosis After Second-Generation Drug-Eluting Stent Implantation
      ...-Wook Kim, MD, 5. Dong-Ho Shin, MD, MPH, 6. Jung-Sun Kim, MD, 7. Byeong-Keuk Kim, MD, 8. Young-Guk Ko, MD, 9. Donghoon Choi, MD, 10. Yangsoo Jang, MD and 11. Myeong-Ki Hong, MD 1. From the Department of Cardiology,...
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      Mentions: Yonsei University Jung-Sun Kim Dong Hoon Choi

    11. Eccentric morphology of jailed side-branch ostium after stent crossover in coronary bifurcation lesions: A three-dimensional optical coherence tomographic analysis

      Explore Journal of Cardiology Cardiology
      Eccentric morphology of jailed side-branch ostium after stent crossover in coronary bifurcation lesions: A three-dimensional optical coherence tomographic analysis
      Background Angiographic stenosis of a jailed side-branch ostium is usually observed after a single-stent crossover at coronary bifurcation lesions. However, the stenosis severity is typically overestimated due to the limited information obtained from two-dimensional morphology by angiography. We evaluated the actual stenosis of jailed side-branch ostium using three-dimensional (3D) optical coherence tomography (OCT). Methods Using 3D reconstructions of OCT data, we analyzed minimal lumen area (MLA) and eccentricity of the ...
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      Mentions: Yonsei University Jung-Sun Kim Dong Hoon Choi

    13. Randomized Comparison of Stent Strut Coverage Following Angiography- or Optical Coherence Tomography-guided Percutaneous Coronary Intervention

      Explore ScienceDirect Cardiology
      Randomized Comparison of Stent Strut Coverage Following Angiography- or Optical Coherence Tomography-guided Percutaneous Coronary Intervention
      Abstract Introduction and objectives The clinical benefits of optical coherence tomography-guided percutaneous coronary intervention are unclear. Therefore, in this study we sought to evaluate the impact of optical coherence tomography guidance on stent strut coverage following drug-eluting stent implantation. Methods A total of 101 patients in 105 lesions were randomly assigned to receive percutaneous coronary intervention under either optical coherence tomography guidance (n = 51 lesions of 50 patients) or angiography ...
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      Mentions: Yonsei University Jung-Sun Kim Dong Hoon Choi

    14. Serial Changes of Neointimal Tissue after Everolimus-Eluting Stent Implantation in Porcine Coronary Artery: An Optical Coherence Tomography Analysis

      Explore Hindawi Publishing Corporation Cardiology
      Serial Changes of Neointimal Tissue after Everolimus-Eluting Stent Implantation in Porcine Coronary Artery: An Optical Coherence Tomography Analysis
      Purposes . The serial changes in neointimal tissues were compared between everolimus-eluting stent (EES) and bare-metal stent (BMS) in the porcine coronary artery using optical coherence tomography (OCT). Methods . Serial (1, 3, and 6 month follow-up after stent implantation) OCT examinations were performed in 15 swine with 15 BMS- and 15 EES-treated lesions in porcine coronary arteries. Results . In BMS-implanted lesions, neointimal volume decreased from 7.3mm 3 to 6.9mm ...
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      Mentions: Yonsei University Jung-Sun Kim Dong Hoon Choi

    16. Long-Term Outcomes of Neointimal Hyperplasia Without Neoatherosclerosis After Drug-Eluting Stent Implantation

      Explore ScienceDirect Cardiology
      Long-Term Outcomes of Neointimal Hyperplasia Without Neoatherosclerosis After Drug-Eluting Stent Implantation
      Objectives The aim of this study was to investigate the correlation between in-stent neointimal tissue without features of neoatherosclerosis and long-term clinical outcomes. Background Recent studies have reported differential morphological characteristics of in-stent neointimal tissue assessed by optical coherence tomography (OCT). Methods The study population consisted of 336 patients with 368 drug-eluting stent-treated lesions. Patients received a follow-up OCT examination without any intervention. OCT-based neointima was categorized as homogeneous (n ...
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      Mentions: Yonsei University Jung-Sun Kim Dong Hoon Choi
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  4. About Dong Hoon Choi

    Dong Hoon Choi

    Donghoon Choi is with the Division of Cardiology at the Yonsei Cardiovascular Center part of Yonsei University College of Medicine in Seoul, Korea.

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    3. Different Findings of Neointimal Coverage and Stent Malapposition in Drug-Eluting Stents Using Optical Coherence Tomography in ST-Elevation Myocardial Infarction
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