颅内动脉瘤是自发性蛛网膜下腔出血的主要原因 ,常由于再出血或脑血管痉挛导致病情恶化或死亡。开颅手术仍然是目前治疗颅内动脉瘤的主要手段 ,借助手术显微镜 ,可以更清楚地辨识动脉瘤体和颈、载瘤动脉和其穿通支以及周围组织结构 ,为动脉瘤手术的成功提供了更为可靠的保障。 Intracranial aneurysm is a major cause of spontaneous subarachnoid hemorrhage, often due to re-bleeding or cerebral vasospasm resulting in deterioration or death. Craniotomy is still the main method for the treatment of intracranial aneurysms at present. By means of a surgical microscope, the structures of the aneurysm and neck, the parent artery and its perforation branch and the surrounding tissues can be identified more clearly, which provides the success of aneurysm surgery More reliable protection.