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Velocity vector imaging to quantify left atrial function

The aim of our study was to assess the feasibility of a new image analysis, velocity vector imaging (VVI), in the assessment of left atrial volumes (LAV) and left atrial ejection fraction (LAEF). We retrospectively analysed 100 transthoracic echocardiographic findings in 71 men, and 29 women (mean a...

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Autores principales: Valocik, Gabriel, Druzbacká, Ludmila, Valocikova, Ivana, Mitro, Peter
Formato: Texto
Lenguaje:English
Publicado: Springer Netherlands 2010
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2898112/
https://www.ncbi.nlm.nih.gov/pubmed/20339918
http://dx.doi.org/10.1007/s10554-010-9619-y
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author Valocik, Gabriel
Druzbacká, Ludmila
Valocikova, Ivana
Mitro, Peter
author_facet Valocik, Gabriel
Druzbacká, Ludmila
Valocikova, Ivana
Mitro, Peter
author_sort Valocik, Gabriel
collection PubMed
description The aim of our study was to assess the feasibility of a new image analysis, velocity vector imaging (VVI), in the assessment of left atrial volumes (LAV) and left atrial ejection fraction (LAEF). We retrospectively analysed 100 transthoracic echocardiographic findings in 71 men, and 29 women (mean age 57 ± 19.8 years). Two subgroups of patients were defined: (1) with left ventricular (LV) EF > 50%, and (2) LV EF < 50%. For the VVI method of indexed LAV assessment we used the apical four-chamber view. From the displacement of LA endocardial pixels time–volume curves were extracted which provided automatically data regarding indexed maximum LAV (LAVImax), indexed minimum LAV (LAVImin), and LAEF. LAVs and LAEF by 2-dimensional echocardiograhy (2DE) were measured by Simpson’s biplane disc summation method. Comparing LAVImax, LAVImin, and LAEF by VVI versus 2DE in the total study population, we found significant correlations: r = 0.94, P < 0.0001, r = 0.94, P < 0.0001, r = 0.79, P < 0.0001, respectively. In addition, LAVImax ≥ 40 ml/m(2) was 94% sensitive and 72% specific, LAVImin ≥ 27 ml/m(2) was 90% sensitive and 86% specific, and LAEF < 30% was 80% sensitive and 96% specific for the detection of LV systolic dysfunction. There were highly significant inverse associations of LAVImax and LAVImin to LVEF. LAEF was also significantly related to LV systolic function. When comparing the time required for VVI and 2DE measurements, VVI led to 62% reduction in the measurement time. In conclusion, VVI is a feasible method for the assessment of LAVs and LAEF. It provides close agreement with that measured by conventional 2DE Simpson’s biplane method with significant time saved.
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spelling pubmed-28981122010-07-29 Velocity vector imaging to quantify left atrial function Valocik, Gabriel Druzbacká, Ludmila Valocikova, Ivana Mitro, Peter Int J Cardiovasc Imaging Original Paper The aim of our study was to assess the feasibility of a new image analysis, velocity vector imaging (VVI), in the assessment of left atrial volumes (LAV) and left atrial ejection fraction (LAEF). We retrospectively analysed 100 transthoracic echocardiographic findings in 71 men, and 29 women (mean age 57 ± 19.8 years). Two subgroups of patients were defined: (1) with left ventricular (LV) EF > 50%, and (2) LV EF < 50%. For the VVI method of indexed LAV assessment we used the apical four-chamber view. From the displacement of LA endocardial pixels time–volume curves were extracted which provided automatically data regarding indexed maximum LAV (LAVImax), indexed minimum LAV (LAVImin), and LAEF. LAVs and LAEF by 2-dimensional echocardiograhy (2DE) were measured by Simpson’s biplane disc summation method. Comparing LAVImax, LAVImin, and LAEF by VVI versus 2DE in the total study population, we found significant correlations: r = 0.94, P < 0.0001, r = 0.94, P < 0.0001, r = 0.79, P < 0.0001, respectively. In addition, LAVImax ≥ 40 ml/m(2) was 94% sensitive and 72% specific, LAVImin ≥ 27 ml/m(2) was 90% sensitive and 86% specific, and LAEF < 30% was 80% sensitive and 96% specific for the detection of LV systolic dysfunction. There were highly significant inverse associations of LAVImax and LAVImin to LVEF. LAEF was also significantly related to LV systolic function. When comparing the time required for VVI and 2DE measurements, VVI led to 62% reduction in the measurement time. In conclusion, VVI is a feasible method for the assessment of LAVs and LAEF. It provides close agreement with that measured by conventional 2DE Simpson’s biplane method with significant time saved. Springer Netherlands 2010-03-26 2010 /pmc/articles/PMC2898112/ /pubmed/20339918 http://dx.doi.org/10.1007/s10554-010-9619-y Text en © The Author(s) 2010 https://creativecommons.org/licenses/by-nc/4.0/ This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
spellingShingle Original Paper
Valocik, Gabriel
Druzbacká, Ludmila
Valocikova, Ivana
Mitro, Peter
Velocity vector imaging to quantify left atrial function
title Velocity vector imaging to quantify left atrial function
title_full Velocity vector imaging to quantify left atrial function
title_fullStr Velocity vector imaging to quantify left atrial function
title_full_unstemmed Velocity vector imaging to quantify left atrial function
title_short Velocity vector imaging to quantify left atrial function
title_sort velocity vector imaging to quantify left atrial function
topic Original Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2898112/
https://www.ncbi.nlm.nih.gov/pubmed/20339918
http://dx.doi.org/10.1007/s10554-010-9619-y
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