Objective:To compare the diagnostic value of transesophagealechocardiography(TEE)with transthoracic echocardiography(TTE)in aortic valvular deformation.
目的：比较经食管与经胸超声心动图（TEE与TTE）对主动脉瓣畸形的诊断价值。
2
Objective To compare the value of estimating embolic risk in atrial fibrillation between the two methods: transthoracic echocardiography (TTE) and transesophagealechocardiography (TEE).
目的比较经胸超声心动描记术（TTE）和经食管超声心动描记术（TEE）评价房颤栓塞危险性的价值。
3
Objective to explore the application value of transesophagealechocardiography (TEE) in detecting the etiological factor of young patients with cerebral infarction.