Fig. 1From: Predictive value of left atrial appendage lobes on left atrial thrombus or spontaneous echo contrast in patients with non-valvular atrial fibrillationEcho-pattern of LA or LAA thrombosis. The LAA regions are illustrated in a 2D TEE view (45-degree plane). a A normal image of left atrium and left atrial appendage (LAA) with one lobe. b A mass of thrombus about 9 × 11 mm2 in the left atrium near the LAA orifice. c A thick pectinate muscle within the LAA cavity, distinct from LAA thrombus. d Left atrial spontaneous echo contrast (LASEC) presents as smoke-like swirling echoesBack to article page