title: Comparison of left ventricular volumes and ejection fractions measured by three-dimensional echocardiography versus by two-dimensional echocardiography and cardiac magnetic resonance in patients with various cardiomyopathies.
abstract: End-diastolic volume and end-systolic volume were measured in 35 consecutive patients with cardiomyopathy using 2-dimensional (2-D) and 3-dimensional (3-D) echocardiography (2, 4, and 8 planes) and cardiac magnetic resonance imaging. Three-dimensional echocardiography correlates better with magnetic resonance imaging than does 2-D echocardiography. Its accuracy improves with the increase in the number of planes used. Two-dimensional echocardiography underestimates volumes, mainly in the subgroup with an ejection fraction of <50%, whereas 3-D echocardiography does not, if enough planes are used. However, in patients with an end-diastolic volume > or =150 ml, the underestimation of 3-D echocardiography is statistically significant. Increasing the number of planes to 8 reduces this bias. Conversely, patients with an end-diastolic volume <150 ml are accurately studied with just 4 planes.
authors.affiliation: Departamento de Imagen Cardíaca, Hospital Clínico San Carlos, Madrid, Spain.
authors.forename: Juan Luis
authors.initials: JL
authors.lastname: Gutiérrez-Chico
authors.forename: José Luis
authors.initials: JL
authors.lastname: Zamorano
authors.forename: Leopoldo
authors.initials: L
authors.lastname: Pérez de Isla
authors.forename: Miguel
authors.initials: M
authors.lastname: Orejas
authors.forename: Carlos
authors.initials: C
authors.lastname: Almería
authors.forename: José Luis
authors.initials: JL
authors.lastname: Rodrigo
authors.forename: Joaquín
authors.initials: J
authors.lastname: Ferreirós
authors.forename: Viviana
authors.initials: V
authors.lastname: Serra
authors.forename: Carlos
authors.initials: C
authors.lastname: Macaya
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002306:Cardiac Volume / Q000502:physiology*; D009202:Cardiomyopathies / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology; D003971:Diastole / Q000502:physiology; D004452:Echocardiography; D019560:Echocardiography, Three-Dimensional; D005260:Female; D006352:Heart Ventricles / Q000033:anatomy & histology*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging; D008297:Male; D008432:Mathematical Computing; D008875:Middle Aged; D015203:Reproducibility of Results; D012984:Software; D013223:Statistics as Topic; D013318:Stroke Volume / Q000502:physiology*; D016277:Ventricular Function, Left / Q000502:physiology*