北京市神经外科研究所

方法：实验于2004-11/2005-05在北京市神经外科研究所动物实验室进行。取Wistar大鼠55只，其中50只随机分为脉冲射频组和射频热凝组，另5只为正常组。

METHODS : The experiment was carried out at animal laboratory of Beijing Neurosurgical Institute between November 2004 and May 2005 . Fifty-five Wistar rats were selected and fifty of the total were randomly divided into PRF group and RFTC group , another five belonged to normal group .

地点和对象：实验地点：北京市神经外科研究所；

SETTING and MATERIALS : Experimental site : Beijing Institute of Neurosurgery .

报告我院1975年至1992年收治的22例颈静脉孔神经鞘瘤。单位：山西博爱医院神经外科；北京市神经外科研究所；

Twenty-two patients with schwannoma of the jugular foramen were operated on at the Beijing Neurosurgical Institute between 1975 and 1992 . The tumors are rare at this location .