摘要
目的通过MRI心肌灌注成像,探讨心肌梗死后心肌存活的情况,为临床治疗提供依据。方法采用西门子1.5T超导MRI扫描仪,心电门控技术,超快速梯度回波电影序列,以2ml/s的速度静脉注射Gd-DTPA15ml。采集首过期短轴成像,延迟期增强后采集短轴位像及长轴位像。结果10例心肌灌注病人除2例正常外,8例心肌梗死病人显示首过期灌注成像病变区为低信号,延迟期3例为透壁性强化,3例非透壁延迟强化,混合型2例,其中1例见透壁性强化外还伴左心尖区室壁瘤。结论磁共振心肌灌注可有效评价心梗后有无存活心肌和非存活心肌,并能确定其部位面积,对其治疗有指导作用。
Objective To detective the viablitive of myocarium in patient of myocardial infaction（MI） and provide evidence for clinical treatment by using the MRI myocardial perfusion （MRMP）. Methords MRMP was perfomed in 10 patients of myocardial infaction（MI） by Siemens Novus 1,ST MR. All patients were performed during the first -pass and delayed phase after injection of 15ml Gd-DTPA at a flow of 2ml/s using fast-card gradientecho echotrain （FGRE ET） sequeence .The short-axis images acqiured during first-pass, and both short axis and long axis images during delayed phase. Results Among 10 patient with MI,2 cases was normal,8 cases showed hypoenhancement during the first -pass imagining （low signal intensity） and revealed delayed hyperenhance. In delayed hyperenhance, 3 cases were transmural（one with left ventricular aneurysm）, 3 cases were nontransmural and 2 cases were mixed. Conclusion The myocardial viability and nonviability as well as their severity and extent can be evaluated effectively by using MRMP in patients of MI.
出处
《上海医学影像》
2005年第3期186-188,共3页
Shanghai Medical Imaging
