颅内动脉瘤是颅内血管壁瘤样异常突起形成的囊状样改变。在人群中的平均发病率约为2.4%~([1]),好发于任何年龄,其中以其40-60岁最多见。其破裂出血是造成蛛网膜下腔出血(subarachnoid hemorrhage,SAH)的最主要原因,约占75%~80%。颅内动脉瘤破裂后形成的SHA和颅 Intracranial aneurysms are cystic lesions of the intracranial aneurysmal anomaly. The average incidence in the population is about 2.4% ~ ([1]), occurs at any age, of which the most common in their 40-60 years. Its rupture is the leading cause of subarachnoid hemorrhage (SAH), accounting for about 75% to 80%. SHA and cranium formed after intracranial aneurysm rupture