运动静息介入三步^(99m)Tc-MIBI心肌显像预测PTCA疗效

Predicting PTCA Outcome with 3 Step 99m Tc MIBI SPECT Myocardial Imaging

目的：探讨组合方案的ＳＰＥＣＴ ９９ｍＴｃＭＩＢＩ 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９９ｍＴｃＭＩＢＩ 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９９ｍＴｃＭＩＢＩ 心肌显像能够在术前全面准确地预测ＰＴＣＡ 的疗效。

s Purposes: To verify the predictive value of 3 step 99m Tc MIBI SPECT myocardial imaging before PTCA.Materials and Methods:122 patients with CAD ready for PTCA were chosen. The 3 step myocardial imaging including exercise(EX), rest(RE) and intravenous infusion of nitroglycerine(NTG) imaging were undertaken before PTCA. EX and RE imaging were repeated 1 2 weeks after PTCA. Results: The SPECT findings correlated with PTCA outcome. The best correlation is found between myocardial perfusion state revealed by NTG EX imaging and PTCA outcome indexes (r=0.9366,P<0.001).Conclusion:3 step 99m Tc MIBI SPECT myocardial imaging can correctly predict outcome before PTCA