113 Hits in 12.2 sec

Transesophageal Echocardiography in the Intensive Care Unit

Sundar Krishnan, Dallen Mill, Goverdhan Dutt Puri
2013 Journal of Perioperative Echocardiography  
While transthoracic echocardiography is the method of choice initially, images can be suboptimal in up to a third of intensive care patients.  ...  In addition, transesophageal echocardiography can be used to diagnose other causes of hemodynamic failure (for e.g., pericardial tamponade, pulmonary embolism and left ventricular outflow tract obstruction  ...  From the noise seen in grayscale B-mode images, 2D STE filters the meaningful speckles associated specifically with myocardial motion to measure parameters of myocardial mechanics. 3D STE achieves similar  ... 
doi:10.5005/jp-journals-10034-1001 fatcat:tj2mel6zpfadnaffv4xrfmojyq

Myocardial Segmentation of Cardiac MRI Sequences With Temporal Consistency for Coronary Artery Disease Diagnosis

Yutian Chen, Wen Xie, Jiawei Zhang, Hailong Qiu, Dewen Zeng, Yiyu Shi, Haiyun Yuan, Jian Zhuang, Qianjun Jia, Yanchun Zhang, Yuhao Dong, Meiping Huang (+1 others)
2022 Frontiers in Cardiovascular Medicine  
Coronary artery disease (CAD) is the most common cause of death globally, and its diagnosis is usually based on manual myocardial (MYO) segmentation of MRI sequences.  ...  In this article, we propose a MYO segmentation framework for sequence of cardiac MRI (CMR) scanning images of the left ventricular (LV) cavity, right ventricular (RV) cavity, and myocardium.  ...  Fully automated left atrium segmentation from anatomical cine long-axis MRI sequences using deep convolutional neural network with unscented Kalman filter. Med Image Anal.  ... 
doi:10.3389/fcvm.2022.804442 pmid:35282363 pmcid:PMC8914019 fatcat:2w4jateounhydhs4kspxfozefa

Application value of myocardial work technology by non-invasive echocardiography in evaluating left ventricular function in patients with chronic heart failure

Yanan Li, Qiang Zheng, Cunying Cui, Yuanyuan Liu, Yanbin Hu, Danqing Huang, Ying Wang, Jun Liu, Lin Liu
2021 Quantitative Imaging in Medicine and Surgery  
The selected myocardial work parameters with high importance rankings resulting from the machine learning model were further compared with the traditional LVEF in the multi-classification of the four groups  ...  This study aimed to explore the incremental value of echocardiographic myocardial work in evaluating the LV systolic dysfunction in patients with chronic heart failure.  ...  After identifying the aortic valve closure from the apical long-axis view using the automated feature, the mitral annulus and LV apex of the end-systolic frame were defined in each of the three apical  ... 
doi:10.21037/qims-20-1038 pmid:34993075 pmcid:PMC8666727 fatcat:coal2yf5o5ellhpb6ck2zs5k6y

Calcium Identification and Scoring Based on Echocardiography. An Exploratory Study on Aortic Valve Stenosis

Luis B. Elvas, Ana G. Almeida, Luís Rosario, Miguel Sales Dias, João C. Ferreira
2021 Journal of Personalized Medicine  
With this technique, from echocardiographic images collected for the same patient with different acquisition settings and different brightness, obtaining a calcium pixel count, where pixel values show  ...  Based on anonymized real patient echocardiographic images, this approach enables semi-automatic calcium identification.  ...  received support from the project Remote Assessment and Telemonitoring of COVID-19 (ReATec), with reference 069101-Programa Operacional Regional do Norte e Programa Operacional Regional de Lisboa.  ... 
doi:10.3390/jpm11070598 fatcat:4yddxj6iyzhgvdfrqqd4k5x44m

Assessment of Myocardial Mechanics Using Speckle Tracking Echocardiography: Fundamentals and Clinical Applications

Holly Geyer, Giuseppe Caracciolo, Haruhiko Abe, Susan Wilansky, Scipione Carerj, Federico Gentile, Hans-Joachim Nesser, Bijoy Khandheria, Jagat Narula, Partho P. Sengupta
2010 Journal of the American Society of Echocardiography  
quantify the regional and global function of the left ventricle.  ...  The tracking system is based on grayscale B-mode images and is obtained by automatic measurement of the distance between 2 pixels of an LV segment during the cardiac cycle, independent of the angle of  ...  Author Disclosure: The authors of this article reported no actual or potential conflicts of interest in relation to this activity. Estimated Time to Complete This Activity: 1 hour  ... 
doi:10.1016/j.echo.2010.02.015 pmid:20362924 fatcat:ug2xb4ykkffn7kb5ilmsf4bs5y

Quantitative Analysis of the Magnitude and Time Delay of Cyclic Variation of Myocardial Backscatter from Asymptomatic Type 2 Diabetes Mellitus Subjects

Allyson A. Gibson, Jean E. Schaffer, Linda R. Peterson, Kyle R. Bilhorn, Karla M. Robert, Troy A. Haider, Marsha S. Farmer, Mark R. Holland, James G. Miller
2009 Ultrasound in Medicine and Biology  
Two-dimensional parasternal long-axis echocardiographic images of 104 type 2 diabetic patients and 44 normal volunteers were acquired.  ...  of using one or two features to segregate subgroups of individuals.  ...  Wagner for his support and guidance with this project and throughout years of collaboration.  ... 
doi:10.1016/j.ultrasmedbio.2009.04.003 pmid:19616360 pmcid:PMC2731824 fatcat:jvcfybo3pzcwll6t44zxyjkta4

Circulation: Cardiovascular Imaging Editors' Picks: Most Important Articles in Cardiovascular Imaging Science, Part II

2013 Circulation Cardiovascular Imaging  
ischemia in patients with coronary artery disease. 1 Summary: Adenosine stress myocardial CT perfusion imaging with 128-slice dual-source CT in high-pitch mode allows for accurate detection of myocardial  ...  On a per-vessel analysis, UF-SPECT resulted in a higher sensitivity for identifying obstructive coronary artery disease (CAD) than S-SPECT.  ...  This novel approach may be useful for the assessment of coronary vessel wall remodeling in patients with suspected coronary artery disease.  ... 
doi:10.1161/circimaging.113.001335 fatcat:3fzx5xkdozdd7oglhqe56crbfe

Poster session 4

2015 European Heart Journal-Cardiovascular Imaging  
Purpose: Epicardial adipose tissue (EAT) thickness, measured by echocardiography, is associated to the presence of coronary artery disease (CAD) and severe aortic stenosis (AS).  ...  EAT thickness is commonly referred as the diameter of the echo-free space between the right ventricular wall and the visceral layer of the pericardium in parasternal long axis view, using the aortic annulus  ...  recommend the use of stress with addition of imaging as preferable for the detection of coronary artery disease.  ... 
doi:10.1093/ehjci/jev276 fatcat:dshh3bhe4necdfoj5ysanip7li

A Review of JACC Journal Articles on the Topic of Cardiac Imaging: 2011–2012

2013 Journal of the American College of Cardiology  
The arterial injury was classified according to the Numano classification. Three patients had prior known coronary artery disease.  ...  10 years or age with a history of Kawasaki disease (KD). Background Patients with a history of KD and coronary artery aneurysms are at risk for late morbidity from coronary artery events.  ... 
doi:10.1016/j.jacc.2013.08.002 fatcat:rr77fpox5vgb7jcgervp4orbja

Advanced Ultrasound and Photoacoustic Imaging in Cardiology

Min Wu, Navchetan Awasthi, Nastaran Mohammadian Rad, Josien P. W. Pluim, Richard G. P. Lopata
2021 Sensors  
Especially with the introduction of deep learning (DL) techniques, US imaging has advanced tremendously in recent years.  ...  This paper reviews some major technological developments in both US (combined with deep learning techniques) and PA imaging in the application of diagnosis of CVDs.  ...  Conflicts of Interest: The authors have no conflict of interest.  ... 
doi:10.3390/s21237947 pmid:34883951 fatcat:guktergujjatnfz6jjdj34qjqu

Diagnostic Testing

2007 Journal of the American College of Cardiology  
A novel approach from routine grayscale echo images, known as speckle tracking, calculates myocardial strain independent of angle of incidence.  ...  Introduction: It is unclear whether the use of F-18-fluorodeoxyglucose (FDG) PET imaging in patients with LV dysfunction and CAD, improves outcomes.  ...  We qualitatively determined overall image quality (IQ), contrast enhancement (CE), and the presence and severity of motion artifacts (MA) in each of the 17 coronary segments using a 3-point scale.  ... 
doi:10.1016/j.jacc.2007.01.038 fatcat:4awusqxpqvhsxjy3mvtt266yjq

Global longitudinal strain can predict heart failure exacerbation in stable outpatients with ischemic left ventricular systolic dysfunction

Damian Kaufmann, Małgorzata Szwoch, Joanna Kwiatkowska, Grzegorz Raczak, Ludmiła Daniłowicz-Szymanowicz
2019 PLoS ONE  
The prognostic significance and utility of global longitudinal strain (GLS) has been previously studied in patients with the broad spectrum of cardiovascular diseases in various endpoints, however its  ...  Therefore, the aim of the study was to verify whether the GLS of the left ventricle (LV) derived by 2D speckle tracking echocardiography has, independently of other well-known clinical parameters, an additional  ...  Analysis of GLS. LV longitudinal function was assessed by the semiautomatic algorithm (Automated Function Imaging, GE, Horten, Norway).  ... 
doi:10.1371/journal.pone.0225829 pmid:31790492 pmcid:PMC6886774 fatcat:ier4tendizgc7eh76bjiym75qm

Noninvasive imaging

2001 Journal of the American College of Cardiology  
It is also highly specific for the detection of significant CAD in the proximal coronary artery tree. Large-scale studies are needed to confirm the usefulness of this technique.  ...  There are not enough studies properly evaluating LAA function in a large number of patients (pts) with isolated severe MS.  ...  Echocardiographic lschemia in Prognosis of High Risk Patients With Coronary Artery Disease Binoy K. Singh, J.  ... 
doi:10.1016/s0735-1097(01)80006-1 fatcat:ghklt3w3zze3le5gwnpbbfvrrm

Imaging of acute pulmonary embolism: an update

Alastair J. E. Moore, Jason Wachsmann, Murthy R. Chamarthy, Lloyd Panjikaran, Yuki Tanabe, Prabhakar Rajiah
2018 Cardiovascular Diagnosis and Therapy  
Ventilation-perfusion (VQ) scan demonstrates ventilation-perfusion mismatches in these patients, with several classification schemes, typically ranging from normal to high.  ...  Catheter pulmonary angiography is no longer used for diagnosis and is used only for interventional management. Echocardiography is used for risk stratification of these patients.  ...  B mode grayscale imaging (left) shows a mixed echogenicity material filling the entirety of both veins (red arrows) consistent with acute thrombus.  ... 
doi:10.21037/cdt.2017.12.01 pmid:30057872 pmcid:PMC6039809 fatcat:oo6mfpadinfs5dp3hsynw6ejuy

The involvement of the aorta by cardiac magnetic resonance in the inflammatory process of acute coronary syndrome

Geetha P Bhumireddy, John F Heitner, Peter J Cawley, Igor Klem, Manesh Patel, Anna Crowley, Jonathan W Weinsaft, Michael Elliott, Michele Parker, Robert M Judd, Raymond J Kim
2009 Journal of Cardiovascular Magnetic Resonance  
Myocardial siderosis is the main cause of morbidity and mortality in thalassaemia major. In the United Kingdom approximately 50% of patients die before reaching 35 years.  ...  T2* CMR can now assess cardiac iron O3 Sub-clinical systolic dysfunction with persistent myocardial edema and inflammation in elite high-endurance athletes with common colds: a cardiovascular magnetic  ...  Further studies with patients are required to assess sensitivity and specificity.  ... 
doi:10.1186/1532-429x-11-s1-p256 fatcat:qt4ngruqcfcwzgmlvhlapd3em4
« Previous Showing results 1 — 15 out of 113 results