title: Computer-assisted image-guided orbit surgery.
abstract: OBJECTIVE
  Modern stereotaxy utilizes preoperative computed tomography (CT) and magnetic resonance imaging (MRI) to provide accurate localization information which can be very helpful in orbital surgery. The purpose of this report is to evaluate the usefulness of stereotactic surgery and application of this procedure in the orbit.
  
  
  METHODS
  Interventional case series of three patients with orbital tumors. All patients had tumor resection with the utilization of two frameless stereotactic systems: Cygnus and Stealth Station.
  
  
  RESULTS
  The applications of image-guided stereotactic surgery proved to be beneficial in three extensive orbital tumors, including optic nerve glioma, recurrent pleomorphic adenoma of lacrimal gland, and secondary orbital meningioma.
  
  
  CONCLUSIONS
  The interactive nature of image guidance can be useful in orbital surgery to orient the surgeon to the exact location within the surgical field and to determine the tumor margins.
authors.affiliation: Department of Ophthalmology, Tulane University Health Sciences Center, New Orleans, LA70112, USA. zkarcio@tulane.edu
authors.forename: Z A
authors.initials: ZA
authors.lastname: Karcioglu
authors.forename: C R
authors.initials: CR
authors.lastname: Mascott
mesh_terms: D008949:Adenoma, Pleomorphic / Q000473:pathology / Q000601:surgery; D000328:Adult; D000368:Aged; D002648:Child; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008579:Meningioma / Q000473:pathology / Q000601:surgery; D009361:Neoplasm Invasiveness; D009364:Neoplasm Recurrence, Local; D013508:Ophthalmologic Surgical Procedures; D020339:Optic Nerve Glioma / Q000473:pathology / Q000601:surgery; D009918:Orbital Neoplasms / Q000473:pathology / Q000601:surgery*; D013238:Stereotaxic Techniques; D025321:Surgery, Computer-Assisted; D014057:Tomography, X-Ray Computed