^(99m)Tc-MIBI心肌显像定量分析对急性心肌梗死后左室重构的评价作用

Assessment of Left Ventricular Remodeling after Acute Myocardial Infarction by Quantitative Analysis of ^(99m)Tc-MIBI Myocardial Perfusion Imaging

目的探讨心肌灌注显像定量分析对急性心肌梗死后左室重构的评价价值。方法对98例急性心肌梗死患者行99mTc-M IB I静息心肌显像,结合靶心定量技术进行梗死面积定量分析及左室重构判定,与同期临床检测的左室射血分数(LVEF)、彩超测定的左室舒张末内径(LVED)进行相关分析。结果急性心肌梗死发生左室重构时平均梗死面积>10%,LVEF、LVED与梗死面积显著相关;前壁和复合壁对左室重构和心功能影响较大。结论心肌灌注显像定量分析可无创、客观评价急性心肌梗死后左室重构。

Objective To explore the clinical value of ^99mTc - MIBI myocardial perfusion imaging quantitative analysis on left ventricular remodeling （LVRM） after acute myocardial infarction （AMI）, Methods The Bull＇s eye quantitative analysis of 99mTc - MIBI myocardial perfusion imaging was performed in 98 AMI patients to judge the LVRM and determine the infarct size. The correlative analysis was performed among the value of left ventricular ejection fraction （ LVEF）, left ventrieular end-diastolic volume （LVED） which measured by echoeardiography and the infarct size. Results The average infarct size was more than 10% when left ventricular remodeling after AMI. The value of infarct size showed significantly correlative with the value of left ventricular ejection fraction and left ventricular end - diastolic volume. Left ventricular remodeling and cardiac function were more seriously influenced by anterior and complex wall infarction. Conclusion Quantitative analysis through 99roTe - MIBI myocardial perfusion imaging could non - invasively and objectively evaluate the left ventricular remodeling of AMI.