1. Articles from Hiram G. Bezerra

    73-78 of 78 « 1 2 3 4
    1. Optical coherence tomography (OCT) strut-level analysis of drug-eluting stents (DES) in human coronary bifurcations

      Optical coherence tomography (OCT) strut-level analysis of drug-eluting stents (DES) in human coronary bifurcations
      Aims: We sought to evaluate the vascular response of stent struts deployed in bifurcation segments using optical coherence tomography (OCT). Conclusions: This study demonstrates a variable patter of strut coverage in the bifurcation among stent technologies, with a high percentage of PES floating struts remaining uncovered at 6-month follow-up.
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    2. Optical Coherence Tomography Assessment of In Vivo Vascular Response After Implantation of Overlapping Bare-Metal and Drug-Eluting Stents

      Optical Coherence Tomography Assessment of In Vivo Vascular Response After Implantation of Overlapping Bare-Metal and Drug-Eluting Stents
      Objectives We designed a randomized trial exploiting optical coherence tomography (OCT) to assess coverage and apposition of overlapping bare-metal stents (BMS) and drug-eluting stents (DES) in human coronary arteries. Background Overlapping DES impair healing in animals. Optical coherence tomography allows accurate in vivo assessment of stent strut coverage and apposition. Methods Seventy-seven patients with long coronary stenoses were randomized to overlapping sirolimus-eluting stents (SES), paclitaxel-eluting stents (PES), zotarolimus-eluting stents (ZES), or BMS. The primary goal of the study was to determine the rate of uncovered/malapposed struts in overlap versus nonoverlap segments, according to stent type, at 6-month follow-up with ...
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    3. Use of optical coherence tomography for accurate characterization of atherosclerosis

      Use of optical coherence tomography for accurate characterization of atherosclerosis
      Optical coherence tomography (OCT) is a novel imaging technology based on low-coherence interferometry that uses scattering of near-infrared light as a signal source to provide vascular cross-sectional imaging with definition far superior to any other available modality. With spatial resolution of up to 10μm, OCT provides 20-fold higher resolution than intravascular ultrasound (IVUS), currently the most used modality for intra-coronary imaging. OCT has the capacity to provide invaluable insight into the various phases of atherosclerotic disease and vascular response to therapeutics. Studies have shown the ability of OCT to detect arterial structures and assist in the determination of different histological ...
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    4. Intracoronary Optical Coherence Tomography: A Comprehensive Review: Clinical and Research Applications

      Cardiovascular optical coherence tomography (OCT) is a catheter-based invasive imaging system. Using light rather than ultrasound, OCT produces high-resolution in vivo images of coronary arteries and deployed stents. This comprehensive review will assist practicing interventional cardiologists in understanding the technical aspects of OCT based upon the physics of light and will also highlight the emerging research and clinical applications of OCT. Semi-automated imaging analyses of OCT systems permit accurate measurements of luminal architecture and provide insights regarding stent apposition, overlap, neointimal thickening, and, in the case of bioabsorbable stents, information regarding the time course of stent dissolution. The advantages and ...
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    5. Assessment of Heterogeneity of Strut-Level Neointima Hyperplasia After Stent Implantation by Optical Coherence Tomography

      Background: Optical coherence tomography (OCT) permits a highly accurate NIH assessment at each strut level within a cross-section. The aim of this study is to evaluate heterogeneity of NIH among different stents. Methods: Patients enrolled in ODESSA were assessed. ODESSA was a prospective randomized trial designed to evaluate strut coverage of overlapped (OLP) vs. non-OLP stent segments for the treatment of de-novo, native coronary artery stenosis with four different stent types: Sirolimus-eluting stent (SES); Paclitaxel-eluting stent (PES); Zotarolimus-eluting stent (ZES); and Liberte BMS (BMS). Distance between strut and lumen was measured in every 5 frames (0.3mm) along the stented ...
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    73-78 of 78 « 1 2 3 4
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    1. (78 articles) Hiram G. Bezerra
    2. (75 articles) Case Western Reserve University
    3. (52 articles) Marco A. Costa
    4. (30 articles) Guilherme F. Attizzani
    5. (20 articles) Yusuke Fujino
    6. (19 articles) St. Jude Medical
    7. (18 articles) Wei Wang
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    "Old" problems revisited; imaging the coronary in high resolution Use of optical coherence tomography for accurate characterization of atherosclerosis Optical coherence tomography (OCT) strut-level analysis of drug-eluting stents (DES) in human coronary bifurcations Semiautomatic segmentation and quantification of calcified plaques in intracoronary optical coherence tomography images Strut Coverage and Late Malapposition With Paclitaxel-Eluting Stents Compared With Bare Metal Stents in Acute Myocardial Infarction: OCT Substudy of the Harmonizing Outcomes With Revascularization and Stents in Acute Myocardial Infarction (HORIZONS-AMI) Plaque and thrombus evaluation by optical coherence tomography Congratulations to Zhao Wang from CWRU a Winner of a 2012 Student Travel Grant Award Consensus Standards for Acquisition, Measurement, and Reporting of Intravascular Optical Coherence Tomography Studies: A Report From the International Working Group for Intravascular Optical Coherence Tomography Standardization and Validation Feasibility and Safety of the Second-Generation, Frequency Domain Optical Coherence Tomography (FD-OCT): A Multicenter Study KU Leuven leads €6 million research project on heart disease and dementia Gabor optical coherence tomographic angiography (GOCTA) (Part II): theoretical basis of sensitivity improvement and optimization for processing speed Retinal Neovascularization–Simulating Retinal Capillary Reperfusion in Branch Retinal Vein Occlusion, Imaged by Wide-Field Optical Coherence Tomography Angiography