3 l a 3D volume rate Correspondence

detected by 2D and 3D speckle tracking. 2DST of triplane datasets showed similar results to those of conventional 2D datasets. 2D and 3D speckle tracking similarly detect normal and Key Words " 3D speckle tracking " 2D speckle tracking " image quality " volume rate T Trache and others 2DST, standard 2D and triplane 2D agreement ID: 14-0025; December 2014 DOI: 10.1530/ERP-14-0025views of the left ventricle are acquired in the same cardiacIntroduction The 2D speckle tracking (2DST) has been validated as a user-friendly and relatively robust method for the quantification of regional left-ventricular (LV) wall motion (1, 2, 3, 4, 5, 6, 7). 2DST strain measurements can also be performed on 2D triplane datasets in the same manner as in the standard, consecutively acquired 2D cineloops. In triplane datasets, all three standard apical cycle using a 3D probe. Triplane echocardiography has been proven to be a reliable tool in the assessment of LV function as conventional 2D echocardiography, with the advantages of a faster data acquisition and a better standardisation of the apical views (7, 8, 9, 10). However, in 2D analyses, motion in and out of the visualised plane cannot be quantified, and appears as noise interfering with tracking (11, 12). Owing to its capacity to analyse the main vectors of the LV motion pattern as represented by the longitudinal, circumferential and radial strain within thepathological wall-motion patterns. Limited image quality has a significant impact on the agreement between 3D and 2D numerical strain values.This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License. q 2014 The authorsThe highest correlation between 2D and 3D peak systolic strain valueswas found between 3