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    1. Mentioned In 92 Articles

    2. Optical coherence tomography in coronary atherosclerosis assessment and intervention

      Optical coherence tomography in coronary atherosclerosis assessment and intervention
      Since optical coherence tomography (OCT) was first performed in humans two decades ago, this imaging modality has been widely adopted in research on coronary atherosclerosis and adopted clinically for the optimization of percutaneous coronary intervention. In the past 10 years, substantial advances have been made in the understanding of in vivo vascular biology using OCT. Identification by OCT of culprit plaque pathology could potentially lead to a major shift in ...
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    3. Optical Coherence Tomography in Cerebrovascular Disease: Open up New Horizons

      Optical Coherence Tomography in Cerebrovascular Disease: Open up New Horizons
      Optical coherence tomography (OCT), based on the backscattering or reflection of near-infrared light, enables an ultra-high resolution of up to 10 m. The successful application of OCT in coronary artery diseases has sparked increasing interest in its implementation in cerebrovascular diseases. OCT has shown promising potential in the atherosclerotic plaque structure characterization, plaque rupture risk stratification, pre-stenting and post-stenting evaluation, and long-term follow-up in extracranial and intracranial atherosclerotic stenosis (ICAS ...
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    4. Impact and implications of mixed plaque class in automated characterization of complex atherosclerotic lesions

      Impact and implications of mixed plaque class in automated characterization of complex atherosclerotic lesions
      Atherosclerosis is a complex disease altering vasculature morphology, and subsequently flow, with progressive plaque formation, mural disruption, and lumen occlusion. Determination of clinically-relevant plaque componentsparticularly calcium, lipid, and fibrous tissuehas driven automated image-based tissue characterization. Atherosclerotic tissue of mixed composition type arises when these principal components interdigitate and combine during the course of progressive atherosclerosis. Nevertheless, such mixed plaque is treated non-uniformly, and often neglected, as a distinct class in ...
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    5. An inverse method for mechanical characterization of heterogeneous diseased arteries using intravascular imaging

      An inverse method for mechanical characterization of heterogeneous diseased arteries using intravascular imaging
      The increasing prevalence of finite element (FE) simulations in the study of atherosclerosis has spawned numerous inverse FE methods for the mechanical characterization of diseased tissue in vivo. Current approaches are however limited to either homogenized or simplified material representations. This paper presents a novel method to account for tissue heterogeneity and material nonlinearity in the recovery of constitutive behavior using imaging data acquired at differing intravascular pressures by incorporating ...
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    6. A platform for high-fidelity patient-specific structural modelling of atherosclerotic arteries: from intravascular imaging to three-dimensional stress distributions

      A platform for high-fidelity patient-specific structural modelling of atherosclerotic arteries: from intravascular imaging to three-dimensional stress distributions
      The pathophysiology of atherosclerotic lesions, including plaque rupture triggered by mechanical failure of the vessel wall, depends directly on the plaque morphology-modulated mechanical response. The complex interplay between lesion morphology and structural behaviour can be studied with high-fidelity computational modelling. However, construction of three-dimensional (3D) and heterogeneous models is challenging, with most previous work focusing on two-dimensional geometries or on single-material lesion compositions. Addressing these limitations, we here present a ...
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    7. Optical Coherence Tomography of Plaque Erosion: JACC Focus Seminar Part 2/3

      Optical Coherence Tomography of Plaque Erosion: JACC Focus Seminar Part 2/3
      Plaque erosion, a distinct histopathological and clinical entity, accounts for over 30% of acute coronary syndromes (ACS). Optical coherence tomography allows in vivo diagnosis of plaque erosion. Local flow perturbation with activation of Toll-like receptor 2 and CD8 + T cells and subsequent desquamation of endothelium and neutrophil extracellular trap formation contribute to mechanisms of plaque erosion. Compared with ACS patients with plaque rupture, those with plaque erosion are younger, have ...
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    8. Frequency-Domain Optical Coherence Tomography for Intracranial Atherosclerotic Stenosis: Feasibility, Safety, and Preliminary Experience

      Frequency-Domain Optical Coherence Tomography for Intracranial Atherosclerotic Stenosis: Feasibility, Safety, and Preliminary Experience
      Background: Despite advances in non-invasive imaging, the characterization of atherosclerotic plaque remains superior with frequency-domain optical coherence tomography (FD-OCT) in the clinical coronary and experimental cerebrovascular literature. An assessment of the feasibility and safety of FD-OCT for intracranial atherosclerotic stenosis (ICAS) is desirable. Methods: We analyzed a cohort of all consecutive FD-OCT evaluations for ICAS performed at our institution from April 2017 to August 2018 (16 months) in patients who ...
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    9. Optical Coherence Tomography of Plaque Erosion and Thrombus in Severe Vertebral Artery Stenosis

      Optical Coherence Tomography of Plaque Erosion and Thrombus in Severe Vertebral Artery Stenosis
      A 69-year-old male presented with medically refractory vertebrobasilar insufficiency and paroxysmal subjective dizziness for six months. Severe stenosis of a dominant left V2 vertebral artery segment was identified on digital subtraction angiography (DSA) with an irregular intraluminal filling defect immediately above the stenosis. Optical coherence tomography (OCT) demonstrated a normal lumen at the distal end, with red thrombus detected distal to the stenosis. Atherosclerotic plaque containing fibro-lipid was also identified ...
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    10. Multi-MHz MEMS-VCSEL swept-source optical coherence tomography for endoscopic structural and angiographic imaging with miniaturized brushless motor probes

      Multi-MHz MEMS-VCSEL swept-source optical coherence tomography for endoscopic structural and angiographic imaging with miniaturized brushless motor probes
      Swept source optical coherence tomography (SS-OCT) enables volumetric imaging of subsurface structure. However, applications requiring wide fields of view (FOV), rapid imaging, and higher resolutions have been challenging because multi-MHz axial scan (A-scan) rates are needed. We describe a microelectromechanical systems vertical cavity surface-emitting laser (MEMS-VCSEL) SS-OCT technology for A-scan rates of 2.4 and 3.0 MHz. Sweep to sweep calibration and resampling are performed using dual channel acquisition ...
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    11. Neovascularization in Human Intracranial Atherosclerotic In-Stent Restenosis

      Neovascularization in Human Intracranial Atherosclerotic In-Stent Restenosis
      Optical coherence tomography (OCT) has seen widespread use in cardiovascular and interventional endovascular imaging. While scattered reports of intracranial usage have been reported for the assessment of atherosclerotic stenosis, nutrifying neovasculature supplying plaque and neointima have not been demonstrated until now. We report the first in-vivo illustration of this phenomenon, which is a high-resolution depiction of a critical pathway for in-stent restenosis.
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    12. An Artificial Intelligence Approach to Assess Spatial Patterns of Retinal Nerve Fiber Layer Thickness Maps in Glaucoma

      An Artificial Intelligence Approach to Assess Spatial Patterns of Retinal Nerve Fiber Layer Thickness Maps in Glaucoma
      Purpose : The purpose of this study was to classify the spatial patterns of retinal nerve fiber layer thickness (RNFLT) and assess their associations with visual field (VF) loss in glaucoma. Methods : We used paired reliable 24-2 VFs and optical coherence tomography scans of 691 eyes from 691 patients. The RNFLT maps were used to determine the RNFLT patterns (RPs) by non-negative matrix factorization (NMF). The RPs were correlated with mean ...
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    13. OCT-NIRS Imaging for Detection of Coronary Plaque Structure and Vulnerability

      OCT-NIRS Imaging for Detection of Coronary Plaque Structure and Vulnerability
      A combination optical coherence tomography and near-infrared spectroscopy (OCT-NIRS) coronary imaging system is being developed to improve the care of coronary patients. While stenting has improved, complications continue to occur at the stented site and new events are caused by unrecognized vulnerable plaques. An OCT-NIRS device has potential to improve secondary prevention by optimizing stenting and by identifying vulnerable patients and vulnerable plaques. OCT is already in widespread use world-wide ...
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    14. Volumetric laser endomicroscopy and optical coherence tomography in Barrett’s esophagus: a systematic review and meta-analysis

      Volumetric laser endomicroscopy and optical coherence tomography in Barrett’s esophagus: a systematic review and meta-analysis
      Background and study aims Endoscopic imaging of Barretts esophagus (BE) with advanced technologies, such as optical coherence tomography (OCT) and volumetric laser endomicroscopy (VLE), allows targeted biopsies and may reduce the number of random biopsies to detect esophageal neoplasia in the early stages during endoscopic BE surveillance. The aim of this study was to evaluate the accuracy of OCT and VLE in diagnosis of intestinal metaplasia, dysplasia, and high-grade dysplasia ...
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    15. Using Optical Coherence Tomography to Make Needle Biopsies Safer

      Using Optical Coherence Tomography to Make Needle Biopsies Safer
      Stereotactic needle biopsy continues to be widely employed in the diagnosis of intracranial lesions. Despite an overall low complication rate, hemorrhage remains one the most common and potentially serious risks of the procedure. Previous series have reported a symptomatic hemorrhage rate of 3% to 6%, with a minority requiring craniotomy and hemorrhage evacuation. 1-4 Though certain factors inherent to the lesion or the patient have been known to increase hemorrhage ...
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  2. About Brigham and Women’s Hospital

    Brigham and Women’s Hospital

    Brigham and Women’s Hospital is dedicated to serving the needs of the community. It is committed to providing the highest quality health care to patients and their families, to expanding the boundaries of medicine through research, and to educating the next generation of health care professionals. Brigham and Women’s/Faulkner Hospitals will be the academic and community teaching hospitals and physicians of choice with the most distinguished caliber of physician and professional healthcare staff. We will create the highest quality of care through our commitment to patients and their families, the innovation inherent in our academic programs, and the strength of partnerships with members of Partners HealthCare System, Dana Farber Cancer Institute, Harvard University, and our local community, as well as our unique relationships with care provider groups such as Harvard Vanguard Medical Associates.