Journal ArticleDOI
Can natural strain and strain rate quantify regional myocardial deformation? A study in healthy subjects
Mirosław Kowalski,Tomasz Kukulski,Fadi Jamal,Jan D'hooge,Frank Weidemann,Frank Rademakers,Bart Bijnens,Liv Hatle,George R. Sutherland +8 more
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TLDR
SR/epsilon imaging appears to be a robust technique for quantifying regional myocardial deformation, and values describing radial deformation were higher than the corresponding SR/ep silon values obtained for longitudinal deformation.Abstract:
Strain rate (SR) and strain (epsilon) have been proposed as new ultrasound (US) indices for quantifying regional wall deformation, and can be measured from color Doppler myocardial data by determining the local spatial velocity gradient. The aim of this study was to define normal regional SR/epsilon values for both radial and longitudinal myocardial deformation. SR/epsilon profiles were obtained from 40 healthy volunteers. For radial deformation, posterior left ventricular (LV) wall SR/epsilon were calculated. For longitudinal, they were determined for basal, mid- and apical segments of the 1. septum; 2. lateral, 3. posterior and 4. anterior LV walls and for the 5. right ventricular (RV) lateral wall. SR/epsilon values describing radial deformation were higher than the corresponding SR/epsilon values obtained for longitudinal deformation. Longitudinal SR/epsilon were homogeneous throughout the septum and all LV walls. This was in contrast to the normal base-apex velocity gradient. The RV segmental SR/epsilon values were higher than those obtained from the corresponding LV wall and inhomogeneous (higher in the apical segments). SR/epsilon imaging appears to be a robust technique for quantifying regional myocardial deformation.read more
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Journal ArticleDOI
Right Ventricular Function in Cardiovascular Disease, Part I Anatomy, Physiology, Aging, and Functional Assessment of the Right Ventricle
TL;DR: The goal of the present review is to offer a clinical perspective on RV structure and function, using echocardiography and magnetic resonance imaging to create new opportunities for the study of RV anatomy and physiology.
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.
Journal ArticleDOI
Assessment of Myocardial Mechanics Using Speckle Tracking Echocardiography: Fundamentals and Clinical Applications
Holly L. Geyer,Giuseppe Caracciolo,Haruhiko Abe,Susan Wilansky,Scipione Carerj,Federico Gentile,Hans Joachim Nesser,Bijoy K. Khandheria,Jagat Narula,Partho P. Sengupta +9 more
TL;DR: Speckle-tracking echocardiography holds promise to reduce interobserver and intraobserver variability in assessing regional LV function and to improve patient care while reducing health care costs through the early identification of subclinical disease.
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: This document describes the current and potential clinical applications of these techniques and their strengths and weaknesses, briefly surveys a selection of the relevant published literature while highlighting normal and abnormal findings in the context of different cardiovascular pathologies, and summarizes the unresolved issues, future research priorities, and recommended indications for clinical use.
Journal ArticleDOI
Strain and strain rate imaging: a new clinical approach to quantifying regional myocardial function.
TL;DR: This review will focus both on the potential clinical applications of these new ultrasound-based deformation parameters and the current limitations inherent in implementing the technique in everyday practice.
References
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Journal ArticleDOI
Myocardial Strain by Doppler Echocardiography Validation of a New Method to Quantify Regional Myocardial Function
TL;DR: Myocardial strain by Doppler echocardiography may represent a new, powerful method for quantifying regional myocardial function and is less influenced by tethering effects than Dopplers tissue imaging.
Journal ArticleDOI
Regional Strain and Strain Rate Measurements by Cardiac Ultrasound: Principles, Implementation and Limitations
Jan D'hooge,Andreas Heimdal,Fadi Jamal,Tomasz Kukulski,Bart Bijnens,Frank Rademakers,Liv Hatle,Paul Suetens,George R. Sutherland +8 more
TL;DR: In this paper, a new ultrasonic method of quantifying regional deformation has been introduced based on the principles of "strain" and'strain rate' imaging, which introduces concepts derived from mechanical engineering which most echocardiographers are not familiar with.
Journal ArticleDOI
Real-time strain rate imaging of the left ventricle by ultrasound
TL;DR: 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.
Journal ArticleDOI
Color Doppler myocardial imaging: a new technique for the assessment of myocardial function
G. R. Sutherland,M.J. Stewart,K.W.E. Groundstroem,Carmel M. Moran,Alan Fleming,F.J. Guell-Peris,Rudolph A. Riemersma,L.N. Fenn,Keith A.A. Fox,William McDicken +9 more
TL;DR: The concomitant enhancement of the myocardial Doppler signal after an intravenous injection of a transpulmonary echocardiographic contrast agent could permit the noninvasive assessment of regional myocardIAL perfusion.
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.