Methods Transmitral flow velocity, pulmonary vien spectra and mitral annulus tissue velocity imaging (TVI) were measured by transthoracic echocardiography in the selected subjects.

• 方法对人选病人行常规检查,同时进行二尖瓣血流频谱、肺静脉血流频谱及二尖瓣环组织多普勒检查,对比临床标准与舒张功能障碍标准对冠心病的诊断率。