RT Journal Article T1 Left ventricular volumes and ejection fraction quantificationusing an automated three-dimensional adaptive analyticechocardiographic algorithm in pediatric population A1 Carvajal Rivera, José J. A1 López Quintero, Johanna C. A1 González Menchén, Cristina A1 De Agustín Loeches, José Alberto A1 Macaya Miguel, Carlos A1 Pérez De Isla, Leopoldo AB Introduction: The quantitative measurement of the left ventricle by echocardiogra-phy is a fundamental tool in the diagnosis and prognosis of acquired and congenitaldiseases in the pediatric population. The objective of this study was to validate anautomated three-dimensional adaptive analytic echocardiographic algorithm, the so-called Heart Model ® (HM) in the pediatric population, using as comparators the leftatrial and left ventricular volumes and left ventricular ejection fraction obtained bymeans of conventional 2D and 3D echocardiography.Methods: Pilot study, where a population comprised of 75 consecutive patients aged6–17 years who attended a pediatric cardiology clinic, was evaluated. Every patientunderwent a conventional 2D and 3D echocardiography and an analysis using HM.Conventional 3D echo was used as the reference method.Results: Seventy-five patients were analyzed. Mean age was 11.2 (4.0) years (52.2%women). The intraclass correlation coefficient of HM vs 2D echo was poor, but it wasgood for the agreement between HM and 3D echo for left ventricular end-diastolicvolume (ICC: 0.98; 95% CI: 0.97–0.99; P < 0.001), left ventricular end-systolic volumeICC: 0.98; 95% CI: 0.96–0.99; P = 0.001), and left ventricular ejection fraction (ICC:0.87; 95% CI: 0.78–0.92; P < 0.001). The agreement was also good for the three pa-rameters when the analysis was performed according to body weight.Conclusions: Heart Model ® is a feasible and accurate tool for the evaluation of leftatrial and left ventricular volumes and left ventricular ejection fraction in pediatricpopulation aged above 6 years. PB Wiley SN 1540-8175 YR 2018 FD 2018 LK https://hdl.handle.net/20.500.14352/130967 UL https://hdl.handle.net/20.500.14352/130967 LA eng NO Carvajal-Rivera, J. J., López-Quintero, J. C., González-Menchén, C., de Agustín, J. A., Macaya, C., & Pérez de Isla, L. (2018). Left ventricular volumes and ejection fraction quantification using an automated three-dimensional adaptive analytic echocardiographic algorithm in pediatric population. Echocardiography (Mount Kisco, N.Y.), 35(11), 1827–1834. https://doi.org/10.1111/echo.14126 DS Docta Complutense RD 18 mar 2026