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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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Formato: | Texto |
Lenguaje: | English |
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Springer Netherlands
2010
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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. |
format | Text |
id | pubmed-2898112 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2010 |
publisher | Springer Netherlands |
record_format | MEDLINE/PubMed |
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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