Left and Right Atrial Volume by Freehand Three-dimensional Echocardiography: In Vivo Validation Using Magnetic Resonance Imaging

Freehand 3D echocardiography using the line of intersection display for guidance of image positioning and a polyhedral surface reconstruction algorithm is a valid, accurate, reproducible method for determining left and right atrial volume in humans that is comparable to magnetic resonance imaging and is superior to current ID and 2D echocardiographic techniques.