Figure 1 Multiplane transoesophageal echocardiography (TOE) example of (A, B, C) a complete and systematic examination of a left atrial appendage (LAA) without thrombosis and (D) of an LAA artefact. Panels A, B, and C show a multilobed appendage displayed at 0°, 87°, and 138°, respectively. Panel D shows an image inside the LAA that is exactly twice as far from the transducer as from the anatomical interface produced by the bend between the LAA and left pulmonary vein (arrow and brackets). Ao, aorta; LA, left atrium.