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. 2021 Jan 18;35(12):3594–3603. doi: 10.1053/j.jvca.2021.01.025

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Fig 1 — Measurement of 2D-STE parameters in a midesophageal four-chamber view. (A) TAD. A lateral point (blue circle) and a septal point (orange circle) were placed at the bottom of the RV free wall and at the bottom of the interventricular septum. A third point was placed at the apex (yellow circle). TAD lateral, TAD septal, and RV longitudinal shortening fraction (%) value automatically were displayed. The midannular point is selected by placed the software. (B) RV global longitudinal strain. Region of interest was generated automatically and adjusted manually. RV was divided into six segments. RVGLS (%) was calculated as the average of the six segments. (C) RV free-wall longitudinal strain. Region of interest was generated automatically and manually adjusted. RV was divided into three segments and RVFWLS (%) was calculated as the average of the three segments. 2D-STE, bidimensional speckle-tracking echocardiography; TAD, tricuspid annular displacement; RV, right ventricle; RVFWLS, right ventricle free-wall longitudinal strain; RVGLS, right ventricle global longitudinal strain.