门电路^（99m）Tc－MIBI心肌断层显像法评价心肌血流灌注和室壁功能

Assessment of Myocardial Perfusion and Ventricular Function with Gated SPECT￣(99m)Tc-MIBI Myocardial Imaging

门电路^（９９ｍ）Ｔｃ－ＭＩＢＩ心肌断层显像可同时评价心肌血流灌注及心室室壁功能。左室射血分数（ＬＶＥＦ）、室壁收缩分数（ＷＣＦ）、室壁功能低下相对容积（ＤＦＡ）与室壁灌注低下相对容积（ＰＤ）的相关系数分别为－０．７７８３、－０．６３５３和０．９１２５。ＷＣＦ、ＬＶＥＦ和ＶＣＦ值对冠状动脉性心脏病的诊断灵敏度分别为８４．６％、６５．４％和３４．６％。除严重冠脉狭窄时ＬＶＥＦ较低外，不同程度冠脉狭窄或单支、双支、三支冠脉狭窄时各功能参数及ＰＤ值无统计差别。

Gated 99m Tc-MIBI myocardial imaging is a good method for the assessment of myocardial perfusion and ventricular function.The corresponding correlation coefficients(r)of ventricular function and perfusion defect(PD)were listed as follows:Left ventricular ejection fraction(LVEF)and PD,r=-0.7 783;Wall contraction fraction(WCF)and PD,r=-0.6 353;Ventricular contraction fraction(VCF)and PD,r=-0.3 387;dysfunction area(DFA)and PD,r=0.9 125.Apart from LVEF was less as a narrowing of the lumen>90%,the narrow degree of coronary artery and single vessel of multivessel disease were not corresponding to the myocardial perfusion and ventricular function.