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本文应用静息、硝酸甘油介入~(99m)Tc—MIBI心肌血流灌注断层显像方法对20例不稳定型心绞痛患者(其中8例有陈旧性心梗病史)PTCA术前术后进行自身对比分析。结果显示:20例患者160个心肌节段中、静息显像异常积分为196(1分33个节段,2分20个节段,3分为41节段):硝酸甘油介入显像及PTCA术后静息显像异常积分均较术前静息显像明显减少且两者积分接近,分别为104和97分,术前患者射血分数为44.5±12.6％,术后为56.4±16.3％,增加26.8％.结果提示核素心肌硝酸甘油介入心肌断层显像简便无创,客观准确,为心绞痛患者PTCA术前选择适应症及术后评价疗效提供了有力手段。
In this study, 20 patients with unstable angina pectoris (8 patients had a history of old myocardial infarction) underwent PTCA before and after PTCA with 99mTc-MIBI myocardial perfusion imaging. analysis. The results showed that in 160 myocardial segments of 20 patients, the abnormal imaging of resting imaging was 196 (1 in 33 segments, 2 in 20 segments, and 3 in 41 segments): nitroglycerin interventional imaging and The postoperative resting imaging scores of PTCA were significantly lower than those of preoperative rest and the integrals of them were close to 104 and 97 respectively. The preoperative ejection fraction was 44.5 ± 12.6% and 56.4 ± 16.3 %, An increase of 26.8% .Results suggest that myocardial nitric oxide myocardial cell nuclear magnetic resonance imaging of myocardial infarction is simple and noninvasive, objective and accurate, for angina patients before PTCA choose indications and postoperative evaluation provides a powerful tool.