定量组织速度成像技术评价心肌存活性

Myocardial viability evaluated by quantitative tissue velocity imaging

目的:探讨定量组织速度成像技术评价心肌存活性的价值。方法:对27名心肌梗死患者行小剂量多巴酚丁胺负荷试验联合定量组织速度成像技术的超声心动图检查。结果:以硝酸甘油介入99 mTC-M IB I心肌灌注显像为标准,随着多巴酚丁胺剂量的增加,与基础状态相比存活组和坏死组心肌Vs,Ve,VTIs有增加的趋势,以△VS%>30%为截断值,则LDDSE结束时QTVI识别存活心肌的敏感性86.9%、特异性79.7%、阳性预测值82.4%、阴性预测值84.8%、准确性83.5%。结论:QTVI联合LDDSE能够准确识别存活心肌。

Objective：The aim of the study was to evaluate the myocardial viability by quantitative tissue velocity imaging technology.Methods：27 cases of the myocardial infarction patients were examed with low dose Dobutamine stress and quantitative tissue velocity imaging echocardiography. Results： NTG 99mTC - MIBI SPECT as the standard,with the dose increase of Dobutamine, the index of Vs,Ve,VTIs has the increasing trend both in viable myocardium and necrosis myocardium compared with baseline, the sensitivity, specity, positive evalue, negative evalue, accuracy was 86.9% ,79.7% ,82.4% ,84.8% ,83.5%. Conclusions： The technology of quantitative tissue velocity imaging can evaluate myocardial viability.