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目的评价硝酸甘油（ＮＴＧ）介入９９ｍＴｃ－甲氧基异丁基异腈（ＭＩＢＩ）心肌断层显像对心肌梗死患者存活心肌的检测价值。方法对１８例心肌梗死患者先行静息心肌断层显像，４８ｈ后在静注９９ｍＴｃ－ＭＩＢＩ前１０ｍｉｎ舌下含服ＮＴＧ０．６ｍｇ，然后再行心肌断层显像。１２例患者于经皮穿刺腔内冠状动脉成形术３个月后重复静态心肌断层显像进行对比分析。结果１８例患者静息心肌断层显像者有６４个节段放射性分布异常，平均得分（８．２±２．９）分，ＮＴＧ介入后有２８个节段灌注改善，平均得分（５．９±３．３）分，１２例接受冠状动脉成形术患者术前灌注异常的４２个心肌节段中，ＮＹＧ介入后有１９个节段灌注改善，术后有１５个节段灌注改善，两者符合率７８．９％。结论ＮＴＧ介入９９ｍＴｃ－ＭＩＢＩ心肌断层显像估测心肌存活有一定的临床价值
Objective To evaluate the detection of viable myocardium in patients with myocardial infarction by nitroglycerin (NTG) interventional 99mTc-methoxyisobutylisonitrile (MIBI) myocardial perfusion imaging. Methods 18 patients with myocardial infarction before resting myocardial perfusion imaging, 48h after intravenous injection of 99mTc-MIBI 10min sublingual NTG0.6mg, and then myocardial imaging. Twelve patients underwent repeat myocardial perfusion imaging 3 months after percutaneous transluminal coronary angioplasty for comparative analysis. Results In 18 patients with resting myocardial imaging, 64 segments showed abnormal radioactivity distribution with an average score of (8.2 ± 2.9) points. After NTG intervention, 28 segments improved perfusion, with an average score of 5.9 ± 3.3) points. Of the 42 myocardial segments of 12 patients undergoing coronary angioplasty with preoperative perfusion abnormalities, 19 segments improved after NYG intervention and 15 segments improved after perfusion, both of which In line with the rate of 78.9%. Conclusion NTG interventional myocardial 99mTc-MIBI myocardial perfusion imaging assessment of myocardial survival has some clinical value