Figure 1

VENC-CMR slice positioning for LAA flow measurements. A VENC-CMR slice was positioned (dashed line) perpendicular to the LAA orifice on long-axis (Figure 1A) and short-axis (Figure 1B) cine-CMR views. The region of interest for flow measurements was drawn around the LAA orifice as outlined by the dotted line on the phase VENC-CMR image (Figure 1C). Abbreviations: LAA = left atrial appendage, LA = left atrium, LV = left ventricle, RA = right atrium, LSPV = left superior pulmonary vein.