Methods The experiment group included 23 cases of patients with single saccular aneurysm, the control group included 7 cases of patients with head trauma and without cardiovascular diseases.

• 方法23例单发颅内囊性动脉瘤患者为实验组，7例无心血管疾病的脑内血肿合并脑挫裂伤患者为对照组。