title: The diagnostic value of measurement of cochlear length and height in temporal bone CT multiplanar reconstruction of inner ear malformation.
abstract: CONCLUSIONS
  The cochlear length (CL) and cochlear height (CH) measured through MPR will provide for more accurate quantitative diagnosis of inner ear malformation, and are subsequently convenient for calculating cochlear duct length (CDL) before cochear implant.
  
  
  OBJECTIVE
  Qualitative and quantitative diagnosis of inner ear malformation in deaf patients through multiplanar reconstruction (MPR) was performed to provide a reference for cochlear implants.
  
  
  METHODS
  One hundred and two cases without sensorineural deafness and 560 patients with sensorineural deafness had MPR of temporal bone computed tomography performed to obtain the standardized cochlear-view and oblique coronal-view images. The inner ear radial lines were measured to formulate normal values for inner ear malformation diagnosing, and the CDL was estimated based on CL.
  
  
  RESULTS
  The normal range values of inner ear radial lines were measured and formulated, of which CL was 8.1-9.59 mm and CH was 3.28-3.90 mm. According to inner ear morphology and the normal values measured above, 61 cases of incomplete partition-type II (IP-II) and a high percentage (27/110, 24.5%) of hypoplasia of cochlea (HC) were diagnosed. The HC group was further divided into 1-turn, 1.5-turn, and 2-turn sub-groups, which had CDL of 15.98 ± 1.48 mm, 21.36 ± 0.96 mm, and 26.56 ± 0.60 mm, respectively.
authors: a Department of Otorhinolaryngology Head and Neck Surgery , The First Affiliated Hospital of GuangXi Medical University , NanNing , GuangXi , PR China.
authors: Yi-Kang
authors: YK
authors: Liu
authors: a Department of Otorhinolaryngology Head and Neck Surgery , The First Affiliated Hospital of GuangXi Medical University , NanNing , GuangXi , PR China.
authors: Cheng-Lin
authors: CL
authors: Qi
authors: a Department of Otorhinolaryngology Head and Neck Surgery , The First Affiliated Hospital of GuangXi Medical University , NanNing , GuangXi , PR China.
authors: Jie
authors: J
authors: Tang
authors: b Department of Radiology , The First Affiliated Hospital of GuangXi Medical University , NanNing , GuangXi , PR China.
authors: Mu-Liang
authors: ML
authors: Jiang
authors: a Department of Otorhinolaryngology Head and Neck Surgery , The First Affiliated Hospital of GuangXi Medical University , NanNing , GuangXi , PR China.
authors: Long
authors: L
authors: Du
authors: a Department of Otorhinolaryngology Head and Neck Surgery , The First Affiliated Hospital of GuangXi Medical University , NanNing , GuangXi , PR China.
authors: Zhen-Hua
authors: ZH
authors: Li
authors: a Department of Otorhinolaryngology Head and Neck Surgery , The First Affiliated Hospital of GuangXi Medical University , NanNing , GuangXi , PR China.
authors: Song-Hua
authors: SH
authors: Tan
authors: a Department of Otorhinolaryngology Head and Neck Surgery , The First Affiliated Hospital of GuangXi Medical University , NanNing , GuangXi , PR China.
authors: An-Zhou
authors: AZ
authors: Tang
mesh_terms: D000293:Adolescent; D016022:Case-Control Studies; D002648:Child; D002675:Child, Preschool; D003051:Cochlea / Q000002:abnormalities / Q000000981:diagnostic imaging*; D006801:Humans; D007223:Infant; D013701:Temporal Bone / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed
keywords: Multiplanar reconstruction; cochlear duct length; hypoplasia of cochlea; incomplete partition-type II