Search Results - "Meshram, Nirvedh"

GPU Accelerated Multilevel Lagrangian Carotid Strain Imaging by Meshram, Nirvedh H., Varghese, Tomy

“…A multilevel Lagrangian carotid strain imaging algorithm is analyzed to identify computational bottlenecks for implementation on a graphics processing unit…”
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Locally optimized correlation-guided Bayesian adaptive regularization for ultrasound strain imaging by Al Mukaddim, Rashid, Meshram, Nirvedh H, Varghese, Tomy

“…Ultrasound strain imaging utilizes radio-frequency (RF) ultrasound echo signals to estimate the relative elasticity of tissue under deformation. Due to the…”
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Carotid atherosclerotic plaque instability and cognition determined by ultrasound-measured plaque strain in asymptomatic patients with significant stenosis by Dempsey, Robert J, Varghese, Tomy, Jackson, Daren C, Wang, Xiao, Meshram, Nirvedh H, Mitchell, Carol C, Hermann, Bruce P, Johnson, Sterling C, Berman, Sara E, Wilbrand, Stephanie M

“…OBJECTIVE This article describes the use of ultrasound measurements of physical strain within carotid atherosclerotic plaques as a measure of instability and…”
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Hierarchical Motion Estimation With Bayesian Regularization in Cardiac Elastography: Simulation and In~ Vivo Validation by Mukaddim, Rashid Al, Meshram, Nirvedh H., Mitchell, Carol C., Varghese, Tomy

“…Cardiac elastography (CE) is an ultrasound-based technique utilizing radio-frequency (RF) signals for assessing global and regional myocardial function. In…”
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Pulse wave imaging of a stenotic artery model with plaque constituents of different stiffnesses: Experimental demonstration in phantoms and fluid-structure interaction simulation by Mobadersany, Nima, Meshram, Nirvedh H., Kemper, Paul, Sise, C.V., Karageorgos, Grigorios M., Liang, Pengcheng, Ateshian, Gerard A., Konofagou, Elisa E.

“…Vulnerable plaques associated with softer components may rupture, releasing thrombotic emboli to smaller vessels in the brain, thus causing an ischemic stroke…”
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Deep Learning for Carotid Plaque Segmentation using a Dilated U-Net Architecture by Meshram, Nirvedh H., Mitchell, Carol C., Wilbrand, Stephanie, Dempsey, Robert J., Varghese, Tomy

“…Carotid plaque segmentation in ultrasound longitudinal B-mode images using deep learning is presented in this work. We report on 101 severely stenotic carotid…”
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Pulse wave and vector flow Imaging for atherosclerotic disease progression in hypercholesterolemic swine by Kemper, Paul, Karageorgos, Grigorios M., Fodera, Daniella, Lee, Nicole, Meshram, Nirvedh, Weber, Rachel A., Nauleau, Pierre, Mobadersany, Nima, Kwon, Nancy, Myers, Kristin, Konofagou, Elisa E.

“…Non-invasive monitoring of atherosclerosis remains challenging. Pulse Wave Imaging (PWI) is a non-invasive technique to measure the local stiffness at…”
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The Preservation of Cognition 1 Year After Carotid Endarterectomy in Patients With Prior Cognitive Decline by Dempsey, Robert J, Jackson, Daren C, Wilbrand, Stephanie M, Mitchell, Carol C, Berman, Sara E, Johnson, Sterling C, Meshram, Nirvedh H, Varghese, Tomy, Hermann, Bruce P

“…Abstract BACKGROUND Vascular cognitive decline is critically important in the course of atherosclerosis and stroke. OBJECTIVE To explore the hypothesis that…”
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Carotid Plaque Strain Indices Were Correlated With Cognitive Performance in a Cohort With Advanced Atherosclerosis, and Traditional Doppler Measures Showed no Association by Mitchell, Carol C., Wilbrand, Stephanie M., Cook, Thomas D., Meshram, Nirvedh H., Steffel, Catherine N., Nye, Rebecca, Varghese, Tomy, Hermann, Bruce P., Dempsey, Robert J.

“…Objectives Traditional Doppler measures have been used to predict cognitive performance in patients with carotid atherosclerosis. Novel measures, such as…”
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Transcranial Doppler and Microemboli Detection: Relationships to Symptomatic Status and Histopathology Findings by Mitchell, Carol C, Wilbrand, Stephanie M, Kundu, Bornali, Steffel, Catherine N, Varghese, Tomy, Meshram, Nirvedh H, Li, Geng, Cook, Thomas D, Salamat, M. Shahriar, Dempsey, Robert J

“…Abstract The purpose of this study was to determine the relationship between symptomatic status, transcranial Doppler (TCD) microemboli presence and plaque…”
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In Reply: The Preservation of Cognition 1 Year After Carotid Endarterectomy in Patients With Prior Cognitive Decline by Dempsey, Robert J, Jackson, Daren C, Wilbrand, Stephanie M, Mitchell, Carol C, Berman, Sara E, Johnson, Sterling C, Meshram, Nirvedh H, Varghese, Tomy, Hermann, Bruce P

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Lagrangian carotid strain imaging indices normalized to blood pressure for vulnerable plaque by Varghese, Tomy, Meshram, Nirvedh H., Mitchell, Carol C., Wilbrand, Stephanie M., Hermann, Bruce P., Dempsey, Robert J.

“…Objective Ultrasound Lagrangian carotid strain imaging (LCSI) utilizes physiological deformation caused by arterial pressure variations to generate strain…”
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Spatiotemporal Bayesian Regularization for Cardiac Strain Imaging: Simulation and In Vivo Results by Mukaddim, Rashid Al, Meshram, Nirvedh H., Weichmann, Ashley M., Mitchell, Carol C., Varghese, Tomy

“…Cardiac strain imaging (CSI) plays a critical role in the detection of myocardial motion abnormalities. Displacement estimation is an important processing step…”
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Pulse wave propagation through a stenotic artery with plaque constituents of different stiffnesses: In vitro-experiment and fluid–structure interaction simulation by Mobadersany, Nima, Meshram, Nirvedh H., Konofagou, Elisa

“…Vulnerable (typically, softer) carotid plaques may rupture leading to blockages downstream in the brain with high potential for ischemic stroke. Pulse Wave…”
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Fast multilevel Lagrangian carotid strain imaging with GPU computing by Meshram, Nirvedh, Varghese, Tomy

“…Lagrangian carotid strain Imaging (LCSI) involves estimation of deformation in the arteries undergoing cardiac pulsation and tracking the local strain over a…”
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4D Pulse Wave Imaging with sub aperture compounding in the carotid artery in simulations, phantoms and human subjects by Meshram, Nirvedh H., Grondin, Julien, Karageorgos, Grigorios Marios, Weber, Rachel, Konofagou, Elisa E.

“…Pulse Wave Imaging (PWI) can non-invasively and regionally map and quantify local pulse wave velocities (PWV). Assumptions regarding axis symmetry are…”
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Abstract TP110: Clinical Risk Factors For Stroke And Associations With Microembolic Signals On Transcranial Doppler by Adil, Abdullah, Mitchell, Carol, Cook, Thomas, Bock, Jenna, Meshram, Nirvedh, Steffel, Catherine, Varghese, Tomy, Wilbrand, Stephanie, Dempsey, Robert J

“…IntroductionTranscranial Doppler (TCD) has been used to identify microembolic signals (MES) in individuals with carotid atherosclerosis. MES are hypothesized…”
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Study of the Relationship Between Ultrasound Strain Indices and Cognitive Decline for Vulnerable Carotid Plaque by Meshram, Nirvedh H., Jackson, Daren, Mitchell, Carol C., Wilbrand, Stephanie M., Dempsey, Robert J., Hermann, Bruce P., Varghese, Tomy

“…A relationship between ultrasound strain indices in carotid plaque to cognitive domains of executive and language function are studied in 42 symptomatic and 34…”
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Adaptive Wall Shear Stress Imaging in Phantoms, Simulations and In Vivo by Karageorgos, Grigorios M., Kemper, Paul, Lee, Changhee, Weber, Rachel, Kwon, Nancy, Meshram, Nirvedh, Mobadersany, Nima, Grondin, Julien, Marshall, Randolph S., Miller, Eliza C., Konofagou, Elisa E.

“…WSS measurement is challenging since it requires sensitive flow measurements at a distance close to the wall. The aim of this study is to develop an ultrasound…”
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Abstract P351: Grayscale Texture Feature Angular Second Moment Correlates With Collagen Alignment in Carotid Artery Plaques by Mitchell, Carol, Wilbrand, Stephanie M, Salamat, M.Shahriar, Eickhoff, Jens, Meshram, Nirvedh H, Steffel, Catherine, Varghese, Tomy, Liu, Yuming, Eliceiri, Kevin, Dempsey, Robert J

“…IntroductionGrayscale (GS) texture features that examine homogeneity and echogenicity have been used to identify vulnerable plaques with in vivo ultrasound…”
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