| Impact of acoustic window on accuracy of longitudinal global strain: a comparison study to cardiac magnetic resonance. | |
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MedLine Citation:
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PMID: 21471046 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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AIMS: To evaluate the impact of acoustic window on the feasibility and accuracy of longitudinal global strain (global-ε) by speckle tracking for assessing left ventricular (LV) systolic function. METHODS AND RESULTS: The study included 70 patients (57 ± 17 years, 64% men), 28 selected patients with a suboptimal image quality (IQ) defined by three or more segments (4 ± 3 segments/patient) with wall motion score not analysable visually and 42 patients with an optimal two-dimensional (2D) echocardiography IQ. Left ventricular ejection fraction (LVEF) by Simpson's biplane method (2D-EF), global-ε by speckle tracking, and peak systolic mitral annulus velocity [systolic tissue Doppler imaging (S-TDI)] were compared with LVEF by cardiac magnetic resonance (EF-CMR; 45 ± 18%, range 9-76%). Speckle-tracking analysis was feasible in all segments with an optimal acoustic window and in 85% (103/121) of segments poorly visualized. Global-ε similarly correlated with LVEF by CMR in patients with and without optimal IQ (r = 0.81 vs. 0.82 for good vs. poor IQ). In contrast, 2D-EF (r = 0.76) and S-TDI (r = 0.64) less correlated with LVEF by CMR in patients with a suboptimal IQ. Importantly, IQ only impacted on 2D-EF inter-observer reproducibility (9 ± 5 vs. 24 ± 22% for good vs. poor IQ) but not on global-ε reproducibility (9 ± 1 vs. 8 ± 7% for good vs. poor IQ). CONCLUSION: In patients with a limited acoustic window, longitudinal strain by speckle tracking remains accurate and reproducible for assessing global and regional LV systolic function. |
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Authors:
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Laurent Macron; Olivier Lairez; Julien Nahum; Mathieu Berry; Leslie Deal; Jean-François Deux; Alexandre Bensaid; Jean-Luc Dubois Randé; Pascal Gueret; Pascal Lim |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-4-5 |
Journal Detail:
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Title: European journal of echocardiography : the journal of the Working Group on Echocardiography of the European Society of Cardiology Volume: - ISSN: 1532-2114 ISO Abbreviation: - Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-4-7 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100890618 Medline TA: Eur J Echocardiogr Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Cardiovascular Department, APHP, Henri Mondor University Hospital, Creteil, France. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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