On-line assessment of left atrial area and function by echocardiographic automatic boundary detection.

45 patients (37 with structural or functional cardiac abnormalities, 35 in sinus rhythm, 10 with atrial fibrillation, 16 with moderate to severe mitral regurgitation) and 10 control subjects.

On-line assessment of left atrial area and function by echocardiographic automatic boundary detection

Off-line measurement from videotaped images of conventional echocardiography

Correlation between on-line-derived LA areas and off-line measurementssurrogate