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应用９９ｍＴｃ－甲氧基异丁基异腈（ＭＩＢＩ）对２９例受检者进行首次通过法心室显像，测定左室射血分数（ＬＶＥＦ），并与同期平衡法心室显像测得的ＬＶＥＦ进行相关分析。结果：首次通过法和平衡法心室显像测得的ＬＶＥＦ分别为（４６．５±１６．７）％、（４９．１±１６．１）％（Ｐ＞０．０５）。相关分析结果显示，二者有明显的相关（ｒ＝０．７８７，Ｐ＜０．０１）。结果表明：９９ｍＴｃ－ＭＩＢＩ为心肌显像剂，采用首次通过法心室显像，在观察心肌血流改变的同时，可准确可靠地评价左室收缩功能状态。
Ninety-nine subjects underwent 99mTc-methoxyisobutyl isonitrile (MIBI) for the first time by ventriculography. Left ventricular ejection fraction (LVEF) was measured and correlated with LVEF measured by equilibrium chamber ventricular imaging analysis. Results: The first LVEF measured by ventricular and ventricular imaging was (46.5 ± 16.7)% and (49.1 ± 16.1)%, respectively (P> 0.05). Correlation analysis showed that there was a significant correlation between them (r = 0.787, P <0.01). The results showed that 99mTc-MIBI was a myocardial imaging agent, and the first passage of ventricular ventriculography was used to evaluate the left ventricular systolic function accurately and reliably while observing the changes of myocardial blood flow.