Journal ArticleDOI
Real-time strain rate imaging of the left ventricle by ultrasound
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TLDR
In the healthy hearts, a spatially homogeneous distribution of the strain rate was found and all the infarcted areas in this study showed up as hypokinetic or akinetic, demonstrating that this method may be used for imaging of regional dysfunction.Abstract:
The regional function of the left ventricle can be visualized in real-time using the new strain rate imaging method. Deformation or strain of a tissue segment occurs over time during the cardiac cycle. The rate of this deformation, the strain rate, is equivalent to the velocity gradient, and can be estimated using the tissue Doppler technique. We present the strain rate as color-coded 2-dimensional cine-loops and color M-modes showing the strain rate component along the ultrasound beam axis. We tested the method in 6 healthy subjects and 6 patients with myocardial infarction. In the healthy hearts, a spatially homogeneous distribution of the strain rate was found. In the infarcted hearts, all the infarcted areas in this study showed up as hypokinetic or akinetic, demonstrating that this method may be used for imaging of regional dysfunction. Shortcomings of the method are discussed, as are some possible future applications of the method. (J Am Soc Echocardiogr 1998;11:1013-9.)read more
Citations
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Recommendations for cardiac chamber quantification by echocardiography in adults: an update from the American Society of Echocardiography and the European Association of Cardiovascular Imaging.
Roberto M. Lang,Luigi P. Badano,Victor Mor-Avi,Jonathan Afilalo,Anderson C. Armstrong,Laura Ernande,Frank A. Flachskampf,Elyse Foster,Steven A. Goldstein,Tatiana Kuznetsova,Patrizio Lancellotti,Denisa Muraru,Michael H. Picard,Ernst Rietzschel,Lawrence G. Rudski,Kirk T. Spencer,Wendy Tsang,Jens-Uwe Voigt +17 more
TL;DR: This document provides updated normal values for all four cardiac chambers, including three-dimensional echocardiography and myocardial deformation, when possible, on the basis of considerably larger numbers of normal subjects, compiled from multiple databases.
Journal ArticleDOI
Recommendations for the evaluation of left ventricular diastolic function by echocardiography
Sherif F. Nagueh,Christopher P. Appleton,Thierry C. Gillebert,Paolo Marino,Jae K. Oh,Otto A. Smiseth,Alan D. Waggoner,Frank A. Flachskampf,Patricia A. Pellikka,Arturo Evangelista +9 more
TL;DR: Recommendations for the evaluation of left ventricular diastolic function by echocardiography are made and further research is needed to determine the best method for this evaluation.
Journal ArticleDOI
Recommendations for the evaluation of left ventricular diastolic function by echocardiography
Sherif F. Nagueh,Christopher P. Appleton,Thierry C. Gillebert,Paolo Marino,Jae K. Oh,Otto A. Smiseth,Alan D. Waggoner,Frank A. Flachskampf,Patricia A. Pellikka,Arturo Evangelisa +9 more
TL;DR: The assessment of left ventricular (LV) diastolic function and filling pressures is of paramount clinical importance to distinguish this syndrome from other diseases such as pulmonary disease resulting in dyspnea, to assess prognosis, and to identify underlying cardiac disease and its best treatment.
Journal ArticleDOI
Recommendations for the Evaluation of Left Ventricular Diastolic Function by Echocardiography: An Update from the American Society of Echocardiography and the European Association of Cardiovascular Imaging
Sherif F. Nagueh,Otto A. Smiseth,Christopher P. Appleton,Benjamin F. Byrd,Hisham Dokainish,Thor Edvardsen,Frank A. Flachskampf,Thierry C. Gillebert,Allan L. Klein,Patrizio Lancellotti,Paolo Marino,Jae K. Oh,Bogdan A. Popescu,Alan D. Waggoner +13 more
TL;DR: The primary goal of this update is to simplify the approach and thus increase the utility of the guidelines in daily clinical practice.
Journal ArticleDOI
Current and evolving echocardiographic techniques for the quantitative evaluation of cardiac mechanics: ASE/EAE consensus statement on methodology and indications: Endorsed by the Japanese Society of Echocardiography
Victor Mor-Avi,Roberto M. Lang,Luigi P. Badano,Marek Belohlavek,Nuno Cardim,Geneviève Derumeaux,Maurizio Galderisi,Thomas H. Marwick,Sherif F. Nagueh,Partho P. Sengupta,Rosa Sicari,Otto A. Smiseth,Beverly Smulevitz,Masaaki Takeuchi,James D. Thomas,Mani A. Vannan,Jens-Uwe Voigt,José Luis Zamorano +17 more
TL;DR: Currently available techniques that allow quantitative assessment of myocardial function via image-based analysis of local myocardials dynamics, including Doppler tissue imaging and speckle-tracking echocardiography, as well as integrated backscatter analysis are described.
References
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Journal ArticleDOI
New method for evaluating left ventricular wall motion by color-coded tissue Doppler imaging : in vitro and in vivo studies
Kunio Miyatake,Masakazu Yamagishi,Norio Tanaka,Masaaki Uematsu,Nobuo Yamazaki,Yoshitake Mine,Akihiro Sano,Makoto Hirama +7 more
TL;DR: Results indicate that the present tissue Doppler imaging system accurately represents tissue velocity and can create two-dimensional color images that facilitate visual assessment of ventricular wall motion.
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Assessment of Passive Elastic Stiffness for Isolated Heart Muscle and the Intact Heart
Israel Mirsky,William W. Parmley +1 more
TL;DR: The results indicate that k is sensitive to stiffness changes due to infarction, hypertrophy causes an increase in the value of k although elastic stiffness remains within normal limits, and k for the intact human heart is lower than it is for isolated muscle.
Journal ArticleDOI
Functional importance of the long axis dynamics of the human left ventricle.
C J Jones,L Raposo,D G Gibson +2 more
TL;DR: Relations between long and short axis motion in healthy individuals are characteristic, and their loss is an early index of systolic ventricular disease, which precede changes in orthodox measures such as fractional shortening or peak velocity of circumferential fibre shortening.
Journal ArticleDOI
Myocardial velocity gradient as a new indicator of regional left ventricular contraction: Detection by a two-dimensional tissue doppler imaging technique
Masaaki Uematsu,Kunio Miyatake,Norio Tanaka,Hisao Matsuda,Akihiro Sano,Nobuo Yamazaki,Makoto Hirama,Masakazu Yamagishi +7 more
TL;DR: The results demonstrate that regional left ventricular contraction can be quantitatively assessed by the myocardial velocity gradient derived from two-dimensional tissue Doppler imaging and suggest that myocardials velocity gradient has potential for the quantitative assessment of regional left Ventricular contraction abnormalities in patients.