目的探讨经胸超声心动图检查(TTE)在缺血性脑卒中病因学诊断中的地位。方法对168例被确诊的缺血性脑卒中病例行经胸超声心动图检查。结果156例(占92.9%)显示心脏不同程度的损害,其中二尖瓣环钙化41例(占24.4%),主动脉瓣钙化43例(占25.6%),左房增大103例(占61.3%)。所有病例无明确的腔内血栓发现。结论经胸超声心动图检查对二尖瓣环钙化、主动脉瓣钙化,心脏的结构和功能的诊断敏感而特异;而二尖瓣环钙化、主动脉瓣钙化和缺血性脑卒中病因学之间有良好的相关性。但经胸超声心动图检查对心内的某些回声(如血栓、赘生物、肿瘤)欠敏感。 Objective To investigate the status of transthoracic echocardiography (TTE) in the etiological diagnosis of ischemic stroke. Methods 168 cases of ischemic stroke were confirmed by transthoracic echocardiography. The results of 156 cases (92.9%) showed varying degrees of heart damage, including mitral annular calcification in 41 cases (24.4%), aortic valve calcification in 43 cases (25.6%), left atrial enlargement in 103 cases (61.3 %). In all cases, no definite endovascular thrombosis was found. Conclusions Transthoracic echocardiography is specific to the diagnosis of mitral annulus calcification, aortic valve calcification and cardiac structure and function. However, mitral annular calcification, aortic valve calcification and etiology of ischemic stroke Good correlation between. However, transthoracic echocardiography is not sensitive to certain echoes in the heart such as thrombi, neoplasms, and tumors.