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采用小剂量多巴酚丁胺(Dob)负荷试验与核素心室造影(RNV)相结合的方法(DobRNV)对20例陈旧性心肌梗塞(OMI)患者进行存活心肌的评估并与201铊(Tl)再注射心肌断层显像(SPECT)相比较。结果显示:静态RNV明显地低估存活心肌的程度,DobRNV将静态RNV对存活心肌的检出率增加61.5%。以201T1再注射心肌SPECT为标准,DobRNV检测存活心肌的阳性预测率为93.8%,阴性预测率为80%,预测准确率为88.5%。
Twenty patients with old myocardial infarction (OMI) were evaluated for myocardial viability using a combination of low dose dobutamine stress test (Dob) and radionuclide ventriculography (RNV) and with 201 thallium (Tl ) Reperfusion myocardial imaging (SPECT) compared. The results showed that static RNV significantly underestimated the extent of viable myocardium, and that DobRNV increased the detection rate of viable myocardium by static RNV by 61.5%. The 201T1 myocardial reperfusion SPECT standard, DobRNV detection of viable myocardium positive predictive rate was 93.8%, the negative predictive rate was 80%, the prediction accuracy was 88.5%.