颅内动脉瘤是一种常见的脑血管病,人群发病率为3.6%～6%[1-2]。在蛛网膜下腔出血的患者中,约有68%为动脉瘤破裂所致,其破裂的发生率(占动脉瘤人群)为1%～2%[2],破裂后致残、致死率很高。近年来,随着神经影像学技术的发展和诊断水平的提高[3],颅内动脉瘤的检出率不断提高。但是,对颅内动脉瘤的治疗,尤其是对未破裂动脉瘤的治疗仍存在争 Intracranial aneurysm is a common cerebrovascular disease, the incidence of the population was 3.6% to 6% [1-2]. In patients with subarachnoid hemorrhage, about 68% of aneurysms rupture, the incidence of rupture (accounting for aneurysm crowd) of 1% to 2% [2], disrupted after rupture, the fatality rate is very high. In recent years, with the development of neuroimaging technology and the improvement of the diagnostic level [3], the detection rate of intracranial aneurysms is increasing. However, the treatment of intracranial aneurysms, especially the treatment of unruptured aneurysms still exist