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目的：探讨组合方案的ＳＰＥＣＴ ９９ｍＴｃＭＩＢＩ 心肌显像术前预测ＰＴＣＡ 疗效的价值。材料与方法：采用运动、静息、静滴硝酸甘油介入三步９９ｍＴｃＭＩＢＩ 心肌显像对１２２ 例拟行ＰＴＣＡ 治疗的患者进行监测，并以术后１ ～２ 周的运动、静息显像作为疗效指标进行比较。结果：术前心肌显像显示的缺损变化与ＰＴＣＡ 疗效有重要关系。以运动与ＮＴＧ 显像组合反映的缺损变化作为预测指标，则与疗效指标呈正相关（ｒ ＝ ０ ．９３６６） 。结论：运动、静息、静滴硝酸甘油介入三步９９ｍＴｃＭＩＢＩ 心肌显像能够在术前全面准确地预测ＰＴＣＡ 的疗效。
OBJECTIVE: To investigate the value of the combination of SPECT 99mTcMII myocardial imaging in predicting the efficacy of PTCA. Materials and Methods: 122 cases of patients scheduled for PTCA were monitored by exercise, resting and intravenous nitroglycerin interventional three-step 99mTc-MIBI myocardial imaging, and exercise and resting imaging were performed 1 to 2 weeks after operation As a curative index for comparison. Results: Preoperative myocardial imaging showed that changes in the defect and the efficacy of PTCA have a significant relationship. The change of the defect reflected by the combination of exercise and NTG imaging was used as a predictor, which was positively correlated with the therapeutic effect (r = 0.9366). Conclusion: The three-step 99mTc-MIIBI myocardial imaging with exercise, resting and intravenous nitroglycerin can predict the effect of PTCA completely and accurately before operation.