肾动脉动态增强磁共振血管造影  

Dynamic Contrast-enhanced MR Angiography of the Renal Arteries

作　　者：范明霞[1] 周康荣[1] 王佩芬[1] 沈继章[1] 

机构地区：[1]上海医科大学附属中山医院,上海200032

出　　处：《实用放射学杂志》2002年第7期595-597,共3页Journal of Practical Radiology

摘　　要：目的　对肾动脉动态增强磁共振血管造影的诊断价值作一初步评估。方法　选择 18例疑有肾动脉疾病患者进行DCEMRA检查。 2 0mlGd -DTPA造影剂经肘静脉快速注射后 ,采用FSPGR序列在一次屏气时间内对肾动脉进行 1～ 2个序列冠状位信号采集 ,将所获得的原始图像输入工作站进行后处理 ,最终获得肾动脉MIP和MPVR重建图像。结果　 12例肾动脉DCEMRA与动脉造影对照 ,DSA显示 12条肾动脉正常 ,DCEMRA显示 11条正常 ,1条轻度狭窄 ;DSA显示 5条轻度狭窄 ,DCEMRA显示其中 4条轻度狭窄 ,1条重度狭窄 ;DSA显示 5条重度狭窄和 3条闭塞与DCEMRA显示结果一致。结论　肾动脉DCEMRA检查与动脉造影比较具有很好的一致性 ,能够比较准确地评价肾动脉狭窄性病变 。Objective To evaluate the diagnostic value of dynamic contrast-enhanced MR angiography(DCE MRA)of the renal arteries.Methods 18 patients suspected with renal arterial diseases underwent DCE MR Angiography examinations.After 20 ml(0.15～0.20 mmol/kg)Gd-DTPA being injected quickly via cubital vein,a scaning and data acquisition with coronal three-demensional fast spoiled gradient(FSPGR)sequence was performed in a breath-hold time,the source images were introduced into work station for post processing,including maximum intensity projection(MIP)and multiplanner reconstruction(MPR),finally 3D DCE MRA images were obtained.Results A comparative study on renal artery stenosis and its degree between DCE MR angiography and DSA was done in 25 arteial segments of 12 cases.In 12 normal renal arteries shown by DSA,DCE MRA found 11 normal and one mild stenosis;Four moderate and one severe stenosis was shown by DCE MRA in five renal arteries with moderate stenosis identified by DSA;DCE MRA found five severe stenosis and three occlusion of renal anteries,which had accordance with DSA findings.Conclusion Dynamic contrast-enhanced MR angiography can accurately assess renal arterial diseases,the accuracy was especially higher in patients with severe arterial stenosis and occlusion.

关 键 词：肾动脉 动态增强磁共振血管造影 磁共振血管造影术 肾动脉疾病 诊断 

分 类 号：R692.16[医药卫生—泌尿科学] R445.2[医药卫生—外科学]