摘要
目的:探讨MR成像对脑动脉瘤破裂的诊断价值。方法:回顾分析20例明确诊断的动脉瘤破裂MR检查资料。结果:常规MR对显示瘤体有限(15%),但结合出血分布特点及血管情况可提示诊断;MRA对显示破裂动脉瘤有较高特征性(90%)。特征性表现为:①形态不规则,边缘不光滑,有棘状突起。②信号不均,流空减弱。③血管痉挛。结论:MR对诊断动脉瘤破裂有一定特征性,可作为动脉瘤破裂诊断筛选,且与DSA互补。
Objective:To evaluate the diagnostic value of MRI in cerebral aneurysmrrhexis.Methods:The MRI findings of 20cases with cerebral aneurysmrrhexis were analyzed retrospectively.Results:The value of conventional MRI is limited for displaying cerebral aneurysm.Combining with distribution of bleeding and blood vessel flow-empty information MR examina-tion is helpful to diagnosis of cerebral aneurysmrrhexis.MRA can improve diagnostic rate of cerebral aneurysmrrhexis signifi-cantly (90%).Some characteristics of MRA are as follow:①The shape of aneurysm are round,oval or irregular,rough-edged with small prickly-prominency.②Heterogeneous signal with decreasing of flow-empty.③Vasospasm.Conclusion:There are certain characteristics MR manifestation of cerebral aneurysmrrhexis.These characteristics can be used as a screening diagnostic method of cerebral aneurysmrrhexis.MRA can provide complementary information to DSA examination.
出处
《中国临床医学影像杂志》
CAS
2002年第5期314-316,共3页
Journal of China Clinic Medical Imaging
关键词
脑动脑瘤
磁共振成像
诊断
cerebral aneurysm
magnetic resonance imaging
