Fig. 2

Left atrial (LA) volume curve. The x-axis represents the percent change in the cardiac cycle, and y-axis represents the volume change in the LA. The acquisition of LA volume was performed using three-dimensional reconstructions of the multi detector electrocardiographic gated cardiac computed tomography (CT) images obtained at different phases of the cardiac cycle (0 to 80% R-R interval) to reflect incremental volume change per 10% change in cardiac cycle