目的 比较磁共振血管造影(MRA) 与数字减影脑血管造影(DSA)在颅内动脉 瘤(IAN)诊断中的应用价值。方法 回顾性 分析我院收治且经手术病理确诊的52例 IAN患者的临床资料，所有患者入院后均 接受MRA、DSA检查，比较MRA、DSA诊断颅 内动脉瘤的准确性，分析其诊断价值。结 果 DSA动脉瘤检出率为98.21%，MRA检出 率为94.64%，两者检出率相近，对比无统 计学意义(P>0.05)；且MRA、DSA测定瘤体 直径及瘤颈宽度对比差异均无统计学意义 (P>0.05)。结论 采用MRA诊断颅内动脉瘤 准确性与DSA相近，且无创，能较好显示 动脉瘤三维构象与瘤体形态，可作为颅内 动脉瘤诊断的首选方案，但对MRA无法确 诊者，需辅以DSA检查。

Objective To compare the application value of magnetic resonance angiography (MRA) and digital subtraction angiography (DSA) in the diagnosis of intracranial aneurysms (IAN). Methods The clinical data of 52 patients with IAN confirmed by surgery and pathology in our hospital were retrospectively analyzed. All the patients underwent MRA and DSA after admission. The accuracy of MRA and DSA in the diagnosis of intracranial aneurysms was compared and the diagnostic value was analyzed. Results The detection rate of DSA in aneurysms was 98.21% and of MRA was 94.64% (P>0.05). The differences of MRA and DSA in measuring tumor diameters and neck width were not statistically significant (P>0.05). Conclusion The accuracy rate of MRA is close to that of DSA in diagnosis of intracranial aneurysms and they are noninvasive. They can well display the three-dimensional conformation and shape of aneurysms, which can be taken as the preferred diagnosis of intracranial aneurysms. For patients who can not be diagnosed by MRA, DSA should be adopted for help.