title: The mirroring technique: a navigation-based method for reconstructing a symmetrical orbit and cranial vault.
abstract: BACKGROUND
  The reconstruction of orbital structures and the cranial vault curvature can be challenging after trauma or wide resections for tumors. Sophisticated methods have been developed recently, but these are resource- and time-consuming.
  
  
  OBJECTIVE
  We report the mirroring technique, which is an effective and costless application for navigation-guided reconstruction procedures.
  
  
  METHODS
  At the time of the reconstruction, high-resolution images are reloaded while forcing a left-right axial flip. The pointer subsequently enables a virtual 3-dimensional projection of the position of the contralateral normal anatomy.
  
  
  RESULTS
  This method was applied successfully in 2 cases of en plaque sphenoid wing meningiomas with secondary exophthalmia.
  
  
  CONCLUSIONS
  The mirroring technique represents an accurate method of outlining the contralateral normal anatomy onto the pathological side based on navigation guidance.
authors.affiliation: Departments of Neurosurgery, Hôpital Erasme, Université Libre de Bruxelles ULB, Brussels, Belgium. mbruneau@ulb.ac.be
authors.forename: Michaël
authors.initials: M
authors.lastname: Bruneau
authors.forename: Frédéric
authors.initials: F
authors.lastname: Schoovaerts
authors.forename: Rachid
authors.initials: R
authors.lastname: Kamouni
authors.forename: Stéphanie
authors.initials: S
authors.lastname: Dache
authors.forename: Olivier
authors.initials: O
authors.lastname: De Witte
authors.forename: Serge
authors.initials: S
authors.lastname: de Fontaine
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008577:Meningeal Neoplasms / Q000473:pathology / Q000601:surgery*; D008579:Meningioma / Q000473:pathology / Q000601:surgery*; D008875:Middle Aged; D038361:Neuronavigation / Q000379:methods*; D009915:Orbit / Q000473:pathology / Q000601:surgery*; D019651:Plastic Surgery Procedures / Q000379:methods*; D025321:Surgery, Computer-Assisted / Q000379:methods