Myocardial strain measurement with 2-dimensional speckle-tracking echocardiography: definition of normal range.
Thomas H. Marwick,Rodel Leano,Joseph Brown,Jing Ping Sun,Rainer Hoffmann,Peter Lysyansky,Michael Becker,James D. Thomas +7 more
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TLDR
This multicenter study of nearly 250 volunteers without evidence of cardiovascular disease showed an average LV peak systolic strain of -18.6 +/- 0.1% and there was significant segmental variation of regional strain to necessitate the use of site-specific normal ranges.Abstract:
The interpretation of wall motion is an important component of echocardiography but remains a source of variation between observers. It has been believed that automated quantification of left ventricular (LV) systolic function by measurement of LV systolic strain from speckle-tracking echocardiography might be helpful. This multicenter study of nearly 250 volunteers without evidence of cardiovascular disease showed an average LV peak systolic strain of −18.6 ± 0.1%. Although strain was influenced by weight, blood pressure, and heart rate, these features accounted for only 16% of variance. However, there was significant segmental variation of regional strain to necessitate the use of site-specific normal ranges.read more
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Variations in subclinical left ventricular dysfunction, functional capacity, and clinical outcomes in different heart failure aetiologies.
Ying Wang,Hong Yang,Mark Nolan,Faraz Pathan,Kazuaki Negishi,Thomas H. Marwick,Thomas H. Marwick +6 more
TL;DR: To what extent SAHF of Type 2 diabetes mellitus (T2DM) and other HF risks showed differences in subclinical left ventricular function, exercise capacity, and prognosis is sought.
Journal ArticleDOI
Speckle tracking echocardiography in the indeterminate form of Chagas disease.
Tomás F. Cianciulli,Gerardo Ariel Albarracín,Mariano Napoli Llobera,Nilda Graciela Prado,María C. Saccheri,Yolanda María Hernández Vásquez,Ricardo J. Méndez,Martín A Beck,Karina Giselle Baez,Lorena Romina Balletti +9 more
TL;DR: Assessment of myocardial strain may detect earlyMyocardial damage in patients with chagas disease and its complications.
Journal ArticleDOI
Regional myocardial work by cardiac magnetic resonance and non-invasive left ventricular pressure: a feasibility study in left bundle branch block
C K Larsen,John M Aalen,Caroline Stokke,Caroline Stokke,Jan Fjeld,Jan Fjeld,Erik Kongsgaard,Jürgen Duchenne,Ganna Degtiarova,Olivier Gheysens,Jens-Uwe Voigt,Otto A. Smiseth,Einar Hopp +12 more
TL;DR: FT-CMR in combination with non-invasive LVP demonstrated markedly reduced work in septum compared to the LV lateral wall in patients with LBBB, suggesting that FT-C MR in combinationWith non- invasive L VP is a relevant clinical tool to measure regional myocardial work.
Journal ArticleDOI
Left ventricular ejection fraction and Global Longitudinal Strain variability between methodology and experience.
Nikos T. Kouris,Vassilis S. Kostopoulos,Georgia A. Psarrou,Peggy M. Kostakou,Chara Tzavara,Christoforos Olympios +5 more
TL;DR: In this paper, the inter-observer variability of ejection fraction (EF) and GLS measurement in patients with a broad spectrum of LV function, between physicians and investigators (Inv) with different levels of expertise was tested.
Echocardiographic predictors for recurrence of ischemic mitral regurgitation after restrictive annuloplasty
TL;DR: Changes in QRS Duration and Morphology Immediately After and At Long-Term FollowUp after Transcatheter Aortic Valve Implantation with the Self-Expanding and Balloon-Expandable Prosthesis.
References
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Journal ArticleDOI
Two-dimensional strain-a novel software for real-time quantitative echocardiographic assessment of myocardial function.
Marina Leitman,P. Lysyansky,Stanislav Sidenko,Vladimir Shir,Eli Peleg,Michal Binenbaum,Edo Kaluski,Ricardo Krakover,Zvi Vered +8 more
TL;DR: In this paper, the authors assess the feasibility of 2D strain, a software for real-time quantitative echocardiographic assessment of myocardial function, which is based on the estimation that a discrete set of tissue velocities are present per each of many small elements on the ultrasound image.
Journal ArticleDOI
Quantitative assessment of intrinsic regional myocardial deformation by Doppler strain rate echocardiography in humans. Validation against three-dimensional tagged magnetic resonance imaging
TL;DR: The present study demonstrates the ability of Doppler echocardiography to measure myocardial strains in a clinical setting and may represent a new powerful method for quantifying left ventricular function noninvasively in humans.
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
TL;DR: 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.
Journal ArticleDOI
Noninvasive quantification of regional myocardial function using Doppler-derived velocity, displacement, strain rate, and strain in healthy volunteers: effects of aging
Jing Ping Sun,Zoran B. Popović,Neil L. Greenberg,Xiao Fang Xu,Craig R. Asher,William J. Stewart,James D. Thomas +6 more
TL;DR: Although myocardial velocities and strain rate showed significant dependence on age, displacement and peak systolic strain measures were less affected, and Doppler tissue echocardiography measurements showed a strong dependence on wall segment position.
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