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. 2019 Jul 27;9(3):85. doi: 10.3390/diagnostics9030085

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Echocardiographic parameters used for the estimation of LV performance. The left panel shows a four-chamber apical view. The right panel shows the waves used to assess LV performance. The Mitral PW-Doppler wave is obtained at the level of the LV inflow (white point). The Mitral TDI-Doppler wave is obtained at the level of the lateral mitral annulus (black point). MV (mitral valve; dotted arrow). RV (right ventricle). LV (left ventricle). RA (right atria). LA (left atria). PW (pulsed wave). DTI (Doppler tissue imaging). Sm (Doppler imaging (TDI)-derived peak systolic annular velocity). Em (TDI-derived early diastolic mitral annulus velocity). Am (TDI-derived late diastolic mitral annulus velocity). PW-E (PW-derived mitral peak early diastolic velocity). PW-A (PW-derived mitral peak late diastolic velocity). IVCT (TDI-derived isovolumic contraction time). IVRT (TDI-derived isovolumic relaxation time). ET (TDI-derived ejection time).