title: [Clinical application of multiplanar reconstruction of facial canal: preliminary report].
abstract: OBJECTIVE
  To study clinical criterion of the anterior positior of mastoid segment and low position of tympanic segment in atresia of external auditory canal.
  
  
  METHODS
  Facial canal of 80 cases was measured by multiplanar reconstruction.
  
  
  RESULTS
  A-B less than 0.4 mm was low position of tympanic segment and E-F less than 5 mm was anterior position of mastoid facial canal in atresia of external auditory canal, there was significant difference between the two subgroups (P < 0.01).
  
  
  CONCLUSIONS
  The first time, the multiplanar reconstruction measurement criterion of facial structures in established. Multiplanar reconstruction system is useful for microsurgery doctors to precisely recognize the mark of high dangerous area in and surroundings.
authors.affiliation: Department of Otorhinolaryngology-Head and Neck Surgery, Affiliated Beijing Tongren Hospital of Capital University of Medical Sciences, Beijing, 100730, China. lz219097@sina.com
authors.forename: Yali
authors.initials: Y
authors.lastname: Zheng
authors.forename: Wenliang
authors.initials: W
authors.lastname: Zhou
authors.forename: Zhonglin
authors.initials: Z
authors.lastname: Liu
authors.forename: Jizhou
authors.initials: J
authors.lastname: Guo
authors.forename: Bing
authors.initials: B
authors.lastname: Wang
authors.forename: Zhonglin
authors.initials: Z
authors.lastname: Mu
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004424:Ear Canal / Q000002:abnormalities* / Q000000981:diagnostic imaging; D004432:Ear, Middle / Q000000981:diagnostic imaging; D005154:Facial Nerve / Q000033:anatomy & histology*; D005260:Female; D006801:Humans; D008297:Male; D008416:Mastoid / Q000000981:diagnostic imaging; D008875:Middle Aged; D012016:Reference Values; D014057:Tomography, X-Ray Computed