title: [Clinical analysis of 1434 cases of frameless stereotactic operation].
abstract: OBJECTIVE
  Stereotactic operations were performed using a frameless stereotactic instrument manufactured by CAS-R-2 instead of traditional stereotactic frame. The aim of this study was to assess the clinical usefulness, accuracy and safety of frameless stereotactic instrument.
  
  
  METHODS
  The clinical data of 1434 patients was retrospectively reviewed. The mean age was 30.7 years (from 0.2 to 89.0 years). Each patient underwent frameless CT/MRI image-guided stereotactic surgery by this robot system from January 1997 to January 2006. The accuracy of position and improvement of symptom were observed. The averaged period of followed-up was 24 months (from 3 to 48 months).
  
  
  RESULTS
  The surgical procedures were performed successfully in all cases. All targets were pointed accurately at first time during the operation. The total effective rate was 93.3% without serious operation related complications.
  
  
  CONCLUSIONS
  Compared with the traditional stereotactic operations, this method has some advantages, such as releasing the patient's pain, convenience the doctors, extending the range of indications and increasing the safety and effective of operation.
authors: Department of Neurosurgery, Navy General Hospital of People's Liberation Army, Beijing 100037, China. tianzengmin@vip.sina.com
authors: Zeng-min
authors: ZM
authors: Tian
authors: Wang-sheng
authors: WS
authors: Lu
authors: Quan-jun
authors: QJ
authors: Zhao
authors: Xin
authors: X
authors: Yu
authors: Yong-ge
authors: YG
authors: Xu
authors: Rui
authors: R
authors: Wang
authors: Shu-bin
authors: SB
authors: Qi
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001921:Brain / Q000473:pathology / Q000601:surgery*; D002648:Child; D002675:Child, Preschool; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012371:Robotics; D013238:Stereotaxic Techniques; D025321:Surgery, Computer-Assisted / Q000379:methods*; D016896:Treatment Outcome