Pérez De Isla, LeopoldoDe Agustín Loeches, José AlbertoLuaces Méndez, MaríaFerreiros Domínguez, JoaquínGarcía Fernández, Miguel ÁngelMacaya Miguel, Carlos2026-02-092026-02-092014-01-30Perez de Isla L, Feltes G, Moreno J, Martinez W, Saltijeral A, de Agustin JA, Gomez de Diego JJ, Marcos-Alberca P, Luaces M, Ferreiros J, Garcia Fernandez MA, Macaya C. Quantification of left atrial volumes using three-dimensional wall motion tracking echocardiographic technology: comparison with cardiac magnetic resonance. Eur Heart J Cardiovasc Imaging. 2014 Jul;15(7):793-9. doi: 10.1093/ehjci/jeu0012047-240410.1093/EHJCI/JEU001https://hdl.handle.net/20.500.14352/131923Background Left atrium (LA) size assessment is clinically relevant, but the accuracy of two-dimensional echocardiographic (2D-echo) methods is limited. Three-dimensional (3D) echocardiography is an excellent alternative but is far from being used in daily clinical practice. Three-dimensional-wall motion tracking (3D-WMT) allows us to obtain volumes in a very simple and rapid manner. The aims of this study were to evaluate the accuracy of 3D-WMT technology to assess LA volume using cardiac magnetic resonance (CMR) as a reference method, to evaluate its reproducibility, and to determine its added clinical value to classify the LA enlargement severity. Methods and results Seventy consecutive patients referred for a CMR study were prospectively enrolled. They underwent LA volume assessment by means of 2D-echo, 3D-WMT, and CMR. Inter-methods agreement was assessed. The mean age was 56 ± 18 years and 42 patients (60%) were males. Average maximal LA volume obtained by 2D-echo, 3D-WMT, and CMR were 63.33 ± 26.82, 79.80 ± 29.0, and 79.80 ± 28.99 mL, respectively. Univariate linear regression analysis showed a good correlation between 3D-WMT and CMR (r = 0.83; P < 0.001). The agreement analysis showed a similar result (ICC = 0.83; 95% CI = 0.74–0.89; P < 0.001). Furthermore, the LA enlargement degree was better evaluated with 3D-WMT than with 2D-echo. Conclusion This study validates LA volume measurements obtained using the new and fast 3D-WMT technology, compared with CMR. This method is fast, accurate, and reproducible, and it allows a better classification of left LA enlargement severity compared with 2D-echo.engjournal article2047-2412https://doi.org/10.1093/EHJCI/JEU00124480243https://academic.oup.com/ehjcimaging/article/15/7/793/2399814https://pubmed.ncbi.nlm.nih.gov/24480243/restricted access616.123D-wall motion trackingCardiac magnetic resonanceLeft atriumThree-dimensional echocardiographyCardiología3205.01 Cardiología