title: The application of three-dimensional magnetic resonance imaging rendering of the inner ear in assessment for cochlear implantation.
abstract: OBJECTIVE
  To study the use of three-dimensional (3D) rendering of T2-weighted magnetic resonance imaging (MRI) images into 3D models of the inner ear in the preoperative assessment for cochlear implantation.
  
  
  METHODS
  A retrospective case review of cochlear implant candidates undergoing preoperative imaging studies to determine their suitability for surgical implantation.
  
  
  METHODS
  A tertiary referral center for the northwest area of England with an established 10-year-old program in cochlear implantation.
  
  
  METHODS
  Selected adult and pediatric patients referred for cochlear implant assessment from 1996 to 1998, who underwent computerized tomography (CT) and MRI studies.
  
  
  METHODS
  Diagnostic imaging modality to assess the structure and patency of the inner ear.
  
  
  METHODS
  To see how detailed anatomic information provided by these 3D models influenced surgical decisions.
  
  
  RESULTS
  Four case studies (with their 3D models) are presented to illustrate different points of interest.
  
  
  CONCLUSIONS
  These 3D models provide the implanting surgeon with precise, detailed, and easily interpretable information about the cochlea, which help to guide surgical implantation, or in certain cases, to decide against attempting surgery in the presence of unfavorable anatomic factors.
authors.affiliation: Department of Otolaryngology, Manchester Royal Infirmary, United Kingdom.
authors.forename: E
authors.initials: E
authors.lastname: Murugasu
authors.forename: P
authors.initials: P
authors.lastname: Hans
authors.forename: A
authors.initials: A
authors.lastname: Jackson
authors.forename: R T
authors.initials: RT
authors.lastname: Ramsden
mesh_terms: D002648:Child; D019929:Cochlear Implantation; D003638:Deafness / Q000209:etiology / Q000601:surgery*; D007758:Ear, Inner / Q000033:anatomy & histology*; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D007090:Image Interpretation, Computer-Assisted; D007223:Infant; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D018579:Patient Selection; D012189:Retrospective Studies