e0691 Feasibility and reproducibility of a new semiautomated quantification of left ventricular volumes and ejection fraction in normal adults using real time 3-dimensional echocardiography

Objective We sought to investigate the feasibility and reproducibility of the new semi-automated tool (4DLVQ) quantification of left ventricular (LV) volumes and ejection fraction (EF) compared to standard 3D echo tool (TomTec 4D LV-Analysis) using real time 3-dimensional echocardiography. Methods Real time 3D echocardiography examinations were performed in 24 volunteers. In the apical 3D full-volumetric images, LV end-diastolic volumes (EDV), end-systolic volumes (ESV) and EF were measured using 4DLVQ and TomTec. The repeatability and agreement of the new method were evaluated compared to TomTec. Results 1. The analysis time of 4DLVQ was significantly shorter than for TomTec (156.63±33.72 s vs 275.55±50.64 s, p 0.05). 3. LVEDV, LVESV and LVEF measured by 4DLVQ had good correlation with those by TomTec. (r 1 =0.715, r 2 =0.618 r 3 =0.532, respectively, p Conclusions 4DLVQ is a novel, simple, feasible and reproducible tool for LV volumes and EF.