Objective:To compare the value of multiplane tr ansesophageal echocardiography(MTEE)and transthoracic echocardiog-raphy(TTE)in the diagnosis of non -rheumatic aortic valvular diseases.

• 目的:比较多平面经食管超声心动图MTEE及经胸超声心动图TTE对非风湿性主动脉瓣病变的诊断价值,探讨其病因及超声特点。