open access

Vol 13, No 2 (2018)
Research paper
Published online: 2018-05-30
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Tissue mitral annular displacement — a novel technique for rapid quantitative assessment of global left ventricular systolic function based on speckle-tracking algorithm

Katarzyna Wdowiak-Okrojek, Paulina Wejner-Mik, Jarosław D. Kasprzak, Piotr Lipiec
DOI: 10.5603/FC.2018.0023
·
Folia Cardiologica 2018;13(2):122-127.

open access

Vol 13, No 2 (2018)
Original Papers
Published online: 2018-05-30

Abstract

Introduction. Tissue mitral annular displacement (TMAD) is a new technique for rapid quantitative assessment of global left ventricular function based on tracking of acoustic markers. It allows for the assessment of mitral annulus displacement relative to the apex, based on standard apical views. Objective was to assess the feasibility and accuracy of measurements obtained with TMAD technique for the analysis of global left ventricular function using three-dimensional (3D) left ventricular ejection fraction (LVEF) measurements as a reference technique. Material and methods. The study included 49 patients (33 men, mean age 65 ± 10 years) admitted with stenocardia, who underwent two-dimensional and 3D transthoracic echocardiography with off-line measurement of LVEF using 3D datasets. Furthermore, measurements of mitral annulus displacement relative to apex with a TMAD algorithm were performed in all patients. Results. Due to the suboptimal quality of the data, insufficient for tracking the acoustic markers by the TMAD algorithm, 5 patients were excluded. TMAD analysis of one apical view took 10 ± 4 s. Mean LVEF was 46.0% ± 12.3%. Among this group of patients there was a statistically significant correlation between LVEF and the midpoint mitral annulus displacement towards the apex in the apical four-chamber view (r = 0.57, p < 0.0001) and the percentage of the midpoint mitral annulus displacement (r = 0.63, p < 0.0001). A similar correlation was observed between midpoint mitral annulus displacement in the apical two-chamber view (r = 0.6, p < 0.0001) and the percentage of the midpoint mitral annulus displacement (r = 0.65, p < 0.0001). Conclusion. Measurement of midpoint mitral annulus displacement by TMAD technique is very rapid and provides satisfactory correlation with 3D LVEF measurements. This technique, however, requires echocardiographic recording of good quality.

Abstract

Introduction. Tissue mitral annular displacement (TMAD) is a new technique for rapid quantitative assessment of global left ventricular function based on tracking of acoustic markers. It allows for the assessment of mitral annulus displacement relative to the apex, based on standard apical views. Objective was to assess the feasibility and accuracy of measurements obtained with TMAD technique for the analysis of global left ventricular function using three-dimensional (3D) left ventricular ejection fraction (LVEF) measurements as a reference technique. Material and methods. The study included 49 patients (33 men, mean age 65 ± 10 years) admitted with stenocardia, who underwent two-dimensional and 3D transthoracic echocardiography with off-line measurement of LVEF using 3D datasets. Furthermore, measurements of mitral annulus displacement relative to apex with a TMAD algorithm were performed in all patients. Results. Due to the suboptimal quality of the data, insufficient for tracking the acoustic markers by the TMAD algorithm, 5 patients were excluded. TMAD analysis of one apical view took 10 ± 4 s. Mean LVEF was 46.0% ± 12.3%. Among this group of patients there was a statistically significant correlation between LVEF and the midpoint mitral annulus displacement towards the apex in the apical four-chamber view (r = 0.57, p < 0.0001) and the percentage of the midpoint mitral annulus displacement (r = 0.63, p < 0.0001). A similar correlation was observed between midpoint mitral annulus displacement in the apical two-chamber view (r = 0.6, p < 0.0001) and the percentage of the midpoint mitral annulus displacement (r = 0.65, p < 0.0001). Conclusion. Measurement of midpoint mitral annulus displacement by TMAD technique is very rapid and provides satisfactory correlation with 3D LVEF measurements. This technique, however, requires echocardiographic recording of good quality.
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Keywords

tissue mitral annular displacement, left ventricular ejection fraction, tracking of acoustic markers

About this article
Title

Tissue mitral annular displacement — a novel technique for rapid quantitative assessment of global left ventricular systolic function based on speckle-tracking algorithm

Journal

Folia Cardiologica

Issue

Vol 13, No 2 (2018)

Article type

Research paper

Pages

122-127

Published online

2018-05-30

DOI

10.5603/FC.2018.0023

Bibliographic record

Folia Cardiologica 2018;13(2):122-127.

Keywords

tissue mitral annular displacement
left ventricular ejection fraction
tracking of acoustic markers

Authors

Katarzyna Wdowiak-Okrojek
Paulina Wejner-Mik
Jarosław D. Kasprzak
Piotr Lipiec

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