Results Aneurysms from anterior communicating artery and posterior communicating artery, which were not huge aneurysms, were easier to rupture. 32%of ruptured aneurysms were multilobe.

• 结果出血性动脉瘤多位于前、后交通动脉，无巨大型动脉瘤，约32%25的动脉瘤表现为分叶或多房状。