摘要
目的：探讨颈部血管狭窄性病变MRA评价的价值与限度。方法：临床拟诊颈动脉硬化性狭窄13例，多发性大动脉炎3例，行2DPC冠状面定位成像后，作2DDTOF成像，MIP重建。所有病例2周内都作了DSA。血管狭窄按ECST方法计算，分四级。结果：MRA评估正常或轻度狭窄的准确度达96％，只3％的血管过高评估为中度狭窄；重度狭窄及闭塞病变的准确度都达到100％，无一例高估或低估。2例中度狭窄有1例低估。结论：MRA是一种很有用的评估颈部血管狭窄性病变的术前检查方法。但目前MRA尚不能完全代替DSA。
Objective:To study the usefulness and limitation of MR angiography(MRA)of stenotic vascular diseases in cervix.Metheds:13 cases of clinically suggested carotid carteries sclerotic stenosis and 3 cases of Takayasu arterilitis were studied by 2D TOF MRA with GE Signa 1. 5T MR system.MIP was used for reconstruction.DSA was performed on all the cases without excoption within two weeks.The degree of stenosis was calculated with ECST methed and graded into four types.Results:The accuracy of Ⅰ,Ⅱ，Ⅲ, Ⅳdegree vascular stenosis evaluated by MRA was 96%, 100%,100% respectively, while the Ⅱdegne stenosis had some false negative results.Conclusion:This preliminary study suggests that MRA may be used as useful screening method of carotid stenosis prior to endarterectomy. But it can not completely substitute for DSA up till now.
出处
《泸州医学院学报》
1998年第2期100-103,共4页
Journal of Luzhou Medical College
关键词
颈动脉狭窄
磁共振血流成像
MRA
诊断
Carotid artery stenosis
Magnetic resonance angiography
Digital substraction angiography
