1Clinical efficacy of surgery for patients with Chiari malformation type Ⅰ:posterior fossa decompression with duraplasty versus posterior fossa decompression with dural splittingPENG Cheng, ZHAO Ming-guang417-4202Clinical efficacy of stereotactic electroencephalogram guided radiofrequency thermocoagulation for refractory epilepsy caused by periventricular gray matter heterotopia:report of 2 case and literature reviewDING Hui-chao, GUAN Jiang-heng, XIE Tian-hao, LI Yang, XIANG Lu, LV Li-hui, LIU Qin, SONG Jiang, XU Guo-zheng421-4243Diagnosis and treatment of cerebral alveolar echinococcosis(report of 29 cases and literature review)LI Xian, HE Ying-Fu425-4284Risk factors for in-stent stenosis in patients with unruptured intracranial aneurysms after Pipeline embolization device implantationGE Hui-jian, GUI Si-ming, DENG Ding-wei, LI You-xiang429-4325Clinical efficacy of Pipeline embolization divice assisted coil embolization for patients with ruptured blood blister-like aneurysms of the internal carotid arteryGUO Kai, WANG Zeng-wu, WANG Peng-cheng, WANG Yuan-yuan433-4366Comparison of clinical efficacy of neuroendoscopy and small bone window craniotomy for patients with supratentorial hypertensive intracerebral hemorrhageSUN Zheng, WU Wen, LIU Yan-ting, TIAN Chun-lei440-4437Prognostic factors of patients with massive cerebral infarction undergoing decompressive craniectomyPENG Zhan-wei, ZHAO Kai, GUO Xiao, OU Yi-bo444-4478Risk factors for non-relief of early postoperative pain in patients with lumbar disc herniation undergoing microsurgeryWANG Hui, WANG Shou-sen, CHEN Ye-huang, XUE Liang, WU Jian-wu, WEI Liang-feng448-450,4559Value of CT and CTA imaging signs in prediction of early hematoma enlargement in patients with spontaneous intracerebral hemorrhageHUANG Chen-guang, JI Lu-yao, XU Yu-hua451-45510Value of serum levels of sodium and potassium in prediction of shunt-dependent hydrocephalus in patients with ruptured intracranial aneurysms after clippingXIA Yu, DENG Lei, YU Zhen-xing, ZHANG Zhi-peng, ZHANG Long456-459 