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Showing 1 to 20 of 22 for “"IVUS"”.
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Quantifying Atherosclerosis: IVUS Imaging For Lumen Border Detection And Plaque Characterization
… and among them intravascular ultrasound (IVUS) has been of particular interest since it provides useful information about tissues microstructures and images with sufficient penetration as well as resolution. In general, the ultimate goal is to provide interventional cardiologists with …
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LUMEN SEGMENTATION IN INTRAVASCULAR ULTRASOUND DATA
Intravascular ultrasound (IVUS) is a catheter-based medical imaging technique that is capable of producing high resolution cross-sectional images of interior of blood vessels and it is currently the gold standard technique for the study of the characteristics of the atherosclerotic plaques. …
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Relationship Between Intravascular Ultrasound Parameters and Fractional Flow Reserve in Intermediate Coronary Artery Stenosis of Left Anterior Descending Artery
… relationship between intravascular ultrasound (IVUS) parameters, including volumetric analysis, and fractional flow reserve (FFR). METHODS: Both IVUS and FFR were performed in 206 cases of intermediate stenosis of the left anterior descending artery (LAD). Myocardial ischemia was assessed by FFR …
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Geo-UNet: A Geometrically Constrained Neural Framework for Clinical-Grade Lumen Segmentation in Intravascular Ultrasound
… lumen boundaries in intravascular ultrasound (IVUS) is needed for sizing interventional stents to treat deep vein thrombosis (DVT). Unfortunately, current segmentation networks like the UNet lack the precision required for clinical adoption in IVUS workflows. This arises due to the difficulty …
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The relationship between intravascular ultrasound-derived percent total atheroma volume and fractional flow reserve in the intermediate stenosis of proximal or middle left anterior descending coronary artery
… vessel (expressed as Intravascular ultrasound [IVUS]-derived percent total atheroma volume [%TAV]), correlates with functional severity of intermediate stenosis of left anterior descending artery (LAD). An IVUS study and fractional flow reserve (FFR) measurements performed in 130 patients with …
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The Relationship Between Volumetric Plaque Components and Classical Cardiovascular Risk Factors and the Metabolic Syndrome
… virtual histology-intravascular ultrasound (VH-IVUS). Background: It remains unclear how the cardiovascular risk factors correlate with the histological components of coronary plaques. Methods: “Whole vessel” VH-IVUS analysis was performed in 189 vessels of 63 patients. The components of …
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AI in the Cath Lab: Implications of Clinical AI-Enabled Assistance for Intravascular Ultrasound Procedures
… completion time of intravascular ultrasound (IVUS) workflows for coronary procedures. It is based on an experiment that was conducted with the support of Boston Scientific, where engineers have recently developed an exploratory AI model for annotating IVUS images as part of a strategic effort …
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Multi-Frequency Processing for Lumen Enhancement with Wideband Intravascular Ultrasound
… to higher resolution intravascular ultrasound (IVUS) images. The need to further improve the IVUS spatial resolution may drive the transducer center frequency even higher than the current 40 MHz range. However, increasing the center frequency may be challenging as it leads to stronger scattering …
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hs-CRP level represents the disease burden and the age but not vulnerability of coronary atherosclerosis
… virtual histology-intravascular ultrasound (VH-IVUS) in 189 vessels of 63 patients. The components of atherosclerosis were classified as fibrous (FI), fibrous-fatty (FF), necrotic core (NC) and dense calcium (DC). Quantitative assessment of these plaque components and the presence of …
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Unsupervised Representation Learning from Intravascular Ultrasound Videos
… morbidity worldwide. Intravascular Ultrasound (IVUS) is an imaging technology that has the distinctive ability to offer real-time endovascular information of the coronary vasculature. However, its low signal-to-noise ratio, low data availability, and numerous artifacts make it challenging to use …
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Attachment mechanisms of a novel, targeted, lipid-based, ultrasound contrast agent
… with high frequency intravascular ultrasound (IVUS). The targeting mechanisms assessed for microbubble attachment include a streptavidin-biotin mechanism, electrostatic mechanism and antibody targeting. The microbubble has been optimized for use with 40MHz IVUS through an investigation into the …
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Multi-modality Imaging to Determine the Role of Calcification and Inflammation on Restenosis Rates Following Lower Limb Angioplasty
… burden assessed by intravascular ultrasound (IVUS), in the experimental arm (EA). 40 patients were used for formal analysis. 14 patients (35%) reached the primary outcome of restenosis. Pre-PTA TBRmax in the restenosis group for 18F-FDG (2.43 [IQR 2.29 – 2.61] and 18F-NaF (2.61 [IQR 2.50 – …
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Investigation Into The Role Of Biomechanical Forces In Determining The Behaviour of Coronary Atherosclerotic Plaques
… virtual-histology intravascular ultrasound (VH-IVUS) studies linking VH-TCFA to future adverse clinical events. VH-TCFA are however common along the coronary tree with the majority remaining clinically silent, suggesting that factors other than plaque phenotype play an important role in …
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Arterial Calcification and the Clinical Implications on Stent Function
… from patient specific intravascular ultrasound (IVUS) data, which defined the histological disease condition of the arteries. Combined with stent modeling, this platform is targeted at the development of virtual evaluation of stent performance in a specific arterial setting. Arterial …
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End-to-End Artificial Intelligence Lifecycle Management
… an AI solution using Intervascular Ultrasound (IVUS) images and the supply chain team exploring AI solutions for demand forecasting. We demonstrate how an AI Ecosystem can enable such teams to focus on their core responsibility, developing innovative medical solutions that improve patients lives.
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Biomechanical Analysis of Human Coronary Atherosclerotic Plaques in Response to Pharmacotherapy, and in Predicting Adverse Clinical Events
… heterogeneity can improve the capability of VH-IVUS to identify plaques that lead to such events.
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Biomechanical and morphological characterization of common iliac vein remodeling: Effects of venous reflux and hypertension
… in conjunction with intravascular ultrasound (IVUS) was utilized to investigate the passive biomechanical response of both control common iliac veins (from 9 dogs) and common iliac veins subjected to chronic venous reflux and hypertension (from 9 dogs). The change in thickness and constituent …
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Intravascular Optical Coherence Tomography Image Analysis
… technologies such as intravascular ultrasound (IVUS), IVOCT with better resolution allows characterization of atherosclerotic plaques and evaluation of coronary stenting with unprecendented details. Currently, analysis of OCT images has been typically conducted manually in an extremely …
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The assessment of biomechanical modelling and PET/MR imaging in coronary atherosclerosis
… virtual-histology intravascular ultrasound (VH-IVUS), optical coherence tomography (OCT), computed tomography angiography (CTA), magnetic resonance imaging (MRI) and positron emission tomography (PET) have been developed to characterise lesion morphology, composition, function and metabolism. …
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