急性心肌梗塞MR灌注成像和SPECT对照研究  

Comparative Study of MR Perfusion Imaging and SPECT in Acute Myocardial Infarction

作　　者：贾文霄[1] 刘巍[2] 王俭[2] 杨利霞[2] 周雁玲[2] 丁爽[2] 

机构地区：[1]新疆医科大学第二附属医院影像中心,新疆乌鲁木齐830054 [2]新疆医科大学第一附属医院影像中心

出　　处：《实用放射学杂志》2009年第7期953-957,共5页Journal of Practical Radiology

基　　金：新疆维吾尔自治区科技攻关项目（编号：200533121）.

摘　　要：目的探讨MR灌注成像和SPECT检测存活心肌的价值。方法对30例临床诊断为急性心肌梗塞的患者（共计510个心肌节段），进行MR心肌灌注扫描检查，包括MR心肌灌注首过时相及MR心肌灌注延迟扫描。将MR扫描结果与单光子发射计算机体层显像（SPECT）结果进行对照，所有病例均行x线冠状动脉造影检查证实。结果MR心肌灌注首过时相扫描发现198个节段呈低灌注缺血改变，312个节段灌注正常；MR心肌灌注延迟扫描发现56个节段造影剂潴留呈梗死改变，454个节段为活性心肌。X线冠状动脉造影检查显示49支冠状动脉主干或其主要分支狭窄。SPECT检出的梗死节段比MR心肌灌注扫描检出的节段少，二者的差异具有统计学意义。结论MR心肌灌注扫描对存活心肌的诊断、预后评估具有重要意义。Objective To investigate the value of MR perfusion imaging and SPECT in detecting viable myocardium. Methods MR myocardial perfusion scanning consisting of first-pass and delayed MR perfusion imaging was performed in 30 patients who were diagnosed as acute myocardial infarction in clinics （510 segments totally）. The results of MR scanning were compared with that of SPECT. All cases were confirmed by coronary arteriography. Results On MR myocardial first- pass scanning 198 segments showed hypoperfusion ischemic changes and 312 segments were normal. 56 segments displayed infarction and 454 segments displayed viable myocardium by delayed images. On coronary arteriography,49 artery stenosis were found in stems and branches of the coronary artery. Infarct segments determined by SPECT were less than MR myocardial perf, usion scanning. There were statistical significance between the two methods. Conclusion MR myocardial perfusion scanning has great potential in the evaluation of diagnosis and prognosis of viable myocardium.

关 键 词：心脏 急性心肌梗塞 磁共振灌注成像 单光子发射计算机体层显像 

分 类 号：R542.22[医药卫生—心血管疾病] R445.2[医药卫生—内科学]