小剂量多巴酚丁胺负荷磁共振成像对存活心肌的诊断价值

Assessment of Myocardial Viability by Low-Dose Dobutamine Stress Magnetic Resonance Imaging

冠心病导致的充血性心力衰竭心功能的恢复则依赖于存活心肌的数量 ,存活心肌的检测方法很多 ,磁共振心肌成像可以获得高质量的、可重复的图像。而不依赖于检查者和患者的状况 ,与超声心动图相比 ,MRI具有较高的诊断正确率。本文综述了小剂量多巴酚丁胺负荷磁共振成像在检测存活心肌方面的诊断指标、对急性心肌梗死和陈旧心肌梗死存活心肌的检测 ,以及和负荷超声心动图在诊断存活心肌方面对比等方面的进展。

myocardial viability is crucial in patients with l ef t ventricular dysfunction resulting from coronary artery disease.Viable myocard ium will most likely benefit from revascularization procedures.Many methods were established for assessment of presence and extent of viable myocardium.Magnetic resonance imaging (MRI) with the high spatial resolution also provides multiple approaches for determining viability of acute ischemically injured and hibernat ing myocardium.low-dose dobutamine stress MRI were shown to be superior to stre ss echocardiography in terms of evaluation of myocardial viability.This review a ddresses the progress toward the diagnostic criteria of defining myocardial viab ility based on MR techniques and comparison to stress echocardiography.