title: [Application of an image-guidance system in endoscopic sinus surgery].
abstract: OBJECTIVE
  To evaluate the advantages of image-guidance system in endoscopic sinus surgery.
  
  
  METHODS
  Twenty-eight endoscopic sinus surgery procedures were performed with the help of image-guidance system. There were 11 cases of chronic sinusitis with/or without nasal polyps, 4 juvenile nasopharyngeal angiofibromas, 6 pituitary adenomas, 3 ethmoid ossifying fibromas, 2 nasopharyngeal mixed tumors, 1 nasal leiomyoma, 1 fungal sinusitis, and 1 inverted papilloma.
  
  
  RESULTS
  In all cases, the preoperative operation would take 15-30 minutes, the registration rate was 1.3-2.0, the localization accuracy was within 1 mm. Compared with the traditional endoscopic sinus surgery, the operative time did not differ obviously. No complication occurred.
  
  
  CONCLUSIONS
  The image-guidance system could identify the operative borders and critical anatomical structures together with the corresponding CT data, especially in cases with anatomical variations, unidentified anatomical landmarks, and intranasal or anterior skull base tumors. Endoscopic sinus surgery, combined with the image-guidance system, provided accurate tumor resection while preserving normal tissue. It could increase surgical effectiveness and decrease overall surgical complications. We believe that the image-guidance system is a useful tool for endoscopic sinus surgery.
authors.affiliation: Department of Otorhinolaryngology, Beijing Tongren Hospital, Capital University of Medical Sciences, Beijing 100730, China. bjsent@public3.bta.net.cn
authors.forename: D
authors.initials: D
authors.lastname: Han
authors.forename: B
authors.initials: B
authors.lastname: Zhou
authors.forename: W
authors.initials: W
authors.lastname: Ge
authors.forename: L
authors.initials: L
authors.lastname: Zhang
authors.forename: Y
authors.initials: Y
authors.lastname: Zhang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D004724:Endoscopy / Q000379:methods; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009668:Nose Diseases / Q000601:surgery*; D010256:Paranasal Sinuses / Q000473:pathology / Q000601:surgery*; D025321:Surgery, Computer-Assisted