目的：　　 探讨实时三维超声(Real-time three-dimensional echocardiography，RT-3DTTE)和组织运动二尖瓣环位移自动跟踪技术(tissu......

目的：　　 探讨实时三维经胸超声心动图(real-time three-dimensional transthoracicechocardiography,RT3D TTE)评价二尖瓣脱垂(m......