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用９９ｍＴｃ－甲氧基异丁基异腈（ＭＩＢＩ）对２０例患者及６例健康志愿者进行门控心肌显像和傅立叶分析，同时进行平衡法核素心室显像．将２０例患者的左室心肌分为１０６个节段，两种显像（门控心肌和心血池）振幅之间有９１个节段相符（８５．８％），所测得的左室射血分数（ＬＶＥＦ）平均值分别为４２．３％±１０．４％和４４．０％±１５．９％（Ｐ＞０，０５）；６例正常人两种显像振幅完全相符，ＬＶＥＦ平均值分别为５８．８％±１０．２％和６４．０％±１１．０％（Ｐ＞０．０５）；正常人与患者间用相同方法所测得的ＬＶＥＦ间有显著差异（Ｐ＜０．０１）．所有２６例受检者两种方法所测得的ＬＶＥＦ值之间有良好的相关性（ｒ＝０．９４，Ｐ＜０．００１）本研究结果表明，９９ｍＴｃ－ＭＩＢＩ门控心肌显像可同时获得心肌血流灌注和左心功能的信息．
Gated myocardial imaging and Fourier analysis were performed in 20 patients and 6 healthy volunteers with 99mTc-methoxyisobutylisonitrile (MIBI), and the balance of radionuclide ventriculography was performed. The left ventricle myocardium of 20 patients was divided into 106 segments. There were 91 segments (85.8%) between the amplitudes of the two images (gated myocardium and cardioplegia). The measured left ventricular ejection The mean LVEF values were 42.3% ± 10.4% and 44.0% ± 15.9%, respectively (P> 0.05) (58.8% ± 10.2%, 64.0% ± 11.0%, respectively) (P> 0.05). There was a significant difference in LVEF measured by the same method between normal subjects and patients (P < 0.01). There was a good correlation between LVEF values measured by the two methods in all 26 subjects (r = 0.94, P <0.001). The results of this study suggest that 99mTc-MIBI gated myocardial imaging can be performed simultaneously Get information on myocardial perfusion and left ventricular function.