Live three-dimensional transthoracic echocardiography is a useful method to exam left atrial appendage, its diagnostic value is nearly equal to transesophageal echocardiography if a good image was obtained.

• 用实时三维探头经胸观察左心耳是一种有效的检查手段，对于超声图像显示满意的患者，左心耳形态学的观察接近食管超声心动图的诊断价值。