Search Results - "Bezerra, Hiram G."
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Diagnostic accuracy of intracoronary optical coherence tomography-derived fractional flow reserve for assessment of coronary stenosis severity
Published in EuroIntervention (01-06-2019)“…A novel method for computation of fractional flow reserve (FFR) from optical coherence tomography (OCT) was developed recently. This study aimed to evaluate…”
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2
Fully automated plaque characterization in intravascular OCT images using hybrid convolutional and lumen morphology features
Published in Scientific reports (13-02-2020)“…For intravascular OCT (IVOCT) images, we developed an automated atherosclerotic plaque characterization method that used a hybrid learning approach, which…”
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3
Load-sharing characteristics of stenting and post-dilation in heavily calcified coronary artery
Published in Scientific reports (06-10-2023)“…In this work, stenting in non-calcified and heavily calcified coronary arteries was quantified in terms of diameter-pressure relationships and load transfer…”
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Incidence, Predictors, Morphological Characteristics, and Clinical Outcomes of Stent Edge Dissections Detected by Optical Coherence Tomography
Published in JACC. Cardiovascular interventions (01-08-2013)“…Objectives This study sought to investigate the frequency, predictors, and detailed qualitative and quantitative assessment of optical coherence tomography…”
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Optical Coherence Tomography Versus Intravascular Ultrasound to Evaluate Coronary Artery Disease and Percutaneous Coronary Intervention
Published in JACC. Cardiovascular interventions (01-03-2013)“…Objectives We compared intravascular ultrasound (IVUS) and 2 different generations of optical coherence tomography (OCT)—time-domain OCT (TD-OCT) and…”
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6
Learning With Fewer Images via Image Clustering: Application to Intravascular OCT Image Segmentation
Published in IEEE access (2021)“…Deep learning based methods are routinely used to segment various structures of interest in varied medical imaging modalities. Acquiring annotations for a…”
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Deep learning segmentation of fibrous cap in intravascular optical coherence tomography images
Published in Scientific reports (22-02-2024)“…Thin-cap fibroatheroma (TCFA) is a prominent risk factor for plaque rupture. Intravascular optical coherence tomography (IVOCT) enables identification of…”
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Automated analysis of fibrous cap in intravascular optical coherence tomography images of coronary arteries
Published in Scientific reports (12-12-2022)“…Thin-cap fibroatheroma (TCFA) and plaque rupture have been recognized as the most frequent risk factor for thrombosis and acute coronary syndrome…”
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9
FFR Derived From Coronary CT Angiography in Nonculprit Lesions of Patients With Recent STEMI
Published in JACC. Cardiovascular imaging (01-04-2017)“…Abstract Objectives This study sought to determine the diagnostic performance of noninvasive fractional flow reserve (FFR) derived from coronary computed…”
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10
Prediction of stent under-expansion in calcified coronary arteries using machine learning on intravascular optical coherence tomography images
Published in Scientific reports (23-10-2023)“…It can be difficult/impossible to fully expand a coronary artery stent in a heavily calcified coronary artery lesion. Under-expanded stents are linked to later…”
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11
Optical Coherence Tomography Assessment of In Vivo Vascular Response After Implantation of Overlapping Bare-Metal and Drug-Eluting Stents
Published in JACC. Cardiovascular interventions (01-05-2010)“…Objectives We designed a randomized trial exploiting optical coherence tomography (OCT) to assess coverage and apposition of overlapping bare-metal stents…”
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12
Segmentation of Coronary Calcified Plaque in Intravascular OCT Images Using a Two-Step Deep Learning Approach
Published in IEEE access (2020)“…We developed a fully automated, two-step deep learning approach for characterizing coronary calcified plaque in intravascular optical coherence tomography…”
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13
Failure Mechanisms and Neoatherosclerosis Patterns in Very Late Drug-Eluting and Bare-Metal Stent Thrombosis
Published in Circulation. Cardiovascular interventions (01-09-2016)“…BACKGROUND—There are few clinical studies on the pathophysiological mechanisms of very late stent thrombosis (VLST). We report optical coherence tomography…”
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14
Longitudinal Geographic Miss (LGM) in Robotic Assisted Versus Manual Percutaneous Coronary Interventions
Published in Journal of interventional cardiology (01-10-2015)“…To evaluate the impact of robotic-assisted percutaneous coronary intervention (RA-PCI) versus manual PCI (M-PCI) on the incidence of Longitudinal Geographic…”
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15
Volumetric Characterization of Human Coronary Calcification by Frequency-Domain Optical Coherence Tomography
Published in Circulation Journal (2013)“…Background: Coronary artery calcification (CAC) presents unique challenges for percutaneous coronary intervention. Calcium appears as a signal-poor region with…”
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The role of acquisition and quantification methods in myocardial blood flow estimability for myocardial perfusion imaging CT
Published in Physics in medicine & biology (13-09-2018)“…In this work, we clarified the role of acquisition parameters and quantification methods in myocardial blood flow (MBF) estimability for myocardial perfusion…”
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Mobilization of progenitor cells and vessel healing after implantation of SYNERGY in acute coronary syndrome
Published in Scientific reports (27-08-2021)“…This study was aimed to compare the vascular healing process of a SYNERGY stent with that of a PROMUS PREMIER stent in patients with acute coronary syndrome…”
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18
Optical coherence tomography for characterization of cardiac allograft vasculopathy after heart transplantation (OCTCAV study)
Published in The Journal of heart and lung transplantation (01-06-2013)“…Background Optical coherence tomography (OCT) is a novel intravascular imaging modality with excellent spatial resolution. This study explored the utility of…”
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Associations of cigarette smoking and burden of thoracic aortic calcification in asymptomatic individuals: A dose-response relationship
Published in PloS one (09-01-2020)“…Smoking is known as a powerful predictor of pathological coronary atherosclerosis. Thoracic aortic calcification (TAC), an alternative marker for pathological…”
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Comparison of Outcomes of Transfemoral Transcatheter Aortic Valve Implantation Using a Minimally Invasive Versus Conventional Strategy
Published in The American journal of cardiology (01-12-2015)“…Some centers, mostly in Europe, have demonstrated the feasibility of a minimally invasive strategy (MIS; i.e., local anesthesia and conscious sedation,…”
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