Abstract 12718: Comparison Between 2D and 3D Speckle Tracking Echocardiography in Evaluating Left Ventricular Strain of Adults
Background: Two-dimensional tracking echocardiography (2DSTE) is rarely used in clinical practice because data acquisition and analysis are time-consuming. Three-dimensional (3DSTE) might improve diagnostic usefulness. We therefore investigated the feasibility of 3DSTE in assessing longitudinal (LS), circumferential (CS) , and radial strain (RS) values, and compared the data with that measured by 2DSTE.
Methods: A complete echocardiography (GE E9) was performed in 132 adults (76 men, mean age 48.8±13.8 years, 104 hypertensive patients and 28 normals). 2D global left ventricular (LV) LS was derived from 2D speckle analysis by Automated Function Imaging from the apical views, and 2DCS and 2DRS from parasternal views. A 3D acquisition of the full LV volume from 4 consecutive cycles was performed. Analysis of 3D strain was performed with automated software (GE EchoPac).
Results: The 3DLS was obtained in 2026 segments (91.7 %) with good tracking quality. The mean values of basal, middle and apical segments were listed in the table for 3D and 2D. The 3DLS was significantly smaller (-18.2 ±2.9 vs 22.0±2.8; r=0.49, p≤0.0001), and the 3DRS was significantly larger than the 2DRS (53.6±10.1 % vs 37.7±13.9 %; r=0.22, p=0.02). There was no significantly difference between the CS values by 3DSTE and 2D STE. The correlation between the two methods was good for LS but poor for CS and RS.
Conclusions: The 3D strain is useful in assessing LV regional and global deformation and function with good feasibility. Among patients with normal wall motion, the concordance and correlation between 2D and 3D global CS and RS were relatively poor. Our results indicate that each regional strain value obtained by different (2D or 3D) methods should be cautiously interpreted and compared.
- © 2013 by American Heart Association, Inc.