Effect of increased body mass index an accuracy of two-dimensional echocardiography for measurement of left ventricular volume, ejection fraction, and mass

We used 2- and 3-dimensional echocardiography to determine left ventricular volume, mass, and ejection fraction in overweight (body mass index [BMI] greater than or equal to 25 kg/m(2)), obese (BMI greater than or equal to 30 kg/m(2)), and control (BMI <25 kg/m(2)) subjects. Compared with corresponding magnetic resonance imaging measurements, 3-dimensional echocardiography is more accurate than 2-dimensional echocardiography in all patients, but particularly in overweight and obese subjects.