摘要
目的 :通过MR灌注成像评价急性梗死心肌组织血流灌注特点。方法 :采用结扎左前降支 90min再灌注的方法建立为再灌注梗死心肌组 ,对 6只犬行MRI灌注成像及延迟扫描 ,观察犬心肌缺血再灌注模型梗死心肌MRI特点。结果 :犬心肌缺血再灌注梗死心肌MR灌注成像表现为灌注缺损区 ,延迟扫描表现为高信号。结论 :MR灌注成像有助于评价心肌血流 。
Objective:To evaluate the characteristics of myocardial perfusion using first pass perfusion MR imaging.Methods:Establishing a canine model of reperfused myocardium by occluding LAD followed by reperfusion. a 90 minute occlusion produced reperfused infarcted myocardium in 6 dogs,performing MRI of heart Gd DTPA enhanced myocardial perfusion and delayed imaging was performed in a 90 minute occlusion produced reperfused infarcted canine model.Results:Hypoenhancement of perfusion imaging and hyperenhancement on delayed phase appeared in canine reperfused infarcted myocardium. Conclusion:Gd DTPA enhanced myocardial perfusion MRI with EPI and Sense technique is helpful to assess blood supply of reperfused myocardium.
出处
《放射学实践》
2003年第5期335-337,共3页
Radiologic Practice
