Fig. 4From: A nomogram to predict left atrial appendage thrombus and spontaneous echo contrast in non-valvular atrial fibrillation patientsDistribution of LAA SEC/LAAT: 0: grade 0, 1: grade 1, 2: grade 2, 3: grade 3, 4: grade 4. LAAT: left atrial appendage thrombusBack to article page