^(99m)TC-MIBI心肌显像对扩张型心肌病的诊断价值

THE DIAGNOSIS OF MYOCARDIAL TOMOGRAPHIC IMAGING WITH ^(99m)TC-MIBI IN THE DILATED CARDIOMYOPATHY

为探讨心肌显像对扩张型心肌病（DCM）的诊断价值，对34例DCM患者和14例以心衰为突出表现的其它心脏增大患者进行99mTc－MIBI心肌灌注断层显像。34例DCM患者表现左室重度扩大者32例（占94％），其中72％（23／32）同时伴有不同程度的右室扩大，心肌出现多节段花斑样改变者占85％；6例缺血性，C肌病（ICM）患者主要表现为轻度和中度的左室扩大；以二尖瓣狭窄为主的风湿性心脏病（RHD）患者主要表现为右室扩大。提示该显像技术可用于DCM的诊断及鉴别诊断。

To assess the diagnosis value of myocardial imaging in the dilated cardiomyopathy(DCM), 34 patients with DCM and 14 patients withlarge heart and heart dysfunction underwentmyocardial perfusion tomographic imagingwith 99m TC-MIBI. 32 of 34 patients with DCMshowed left ventricle serious enlargement(94% ), 23of 32 patients with left ventricle enlargement (72%)showed different degrees of right ventricle enlargement. 85% (29/34) of the patients with DCMshowed myocardial multiple segments patch patternchange. All of the 6 patients with ischemic cardiomyopathy (ICM) had abnormal images. ICMmainly showed light and moderate left ventricle enlargement. The patients with rheumatic heart disease mainly showed right ventricle enlargement. Results suggest that this image technique is useful fordiagnosis of DCM and in differentiating DCM fromthe other large heart diseases.