title: Three-dimensional anatomic analysis of retrosigmoid approach with thin-section computed tomographic image.
abstract: OBJECTIVE
  This study aimed to locate and measure the distances between important structures of the retrosigmoid approach using both three-dimensional reconstruction technique and volume-rendering technique.
  
  
  METHODS
  We scanned skulls of 120 volunteers to get the final result with thin-section computed tomographic image.
  
  
  RESULTS
  The distance of AC was measured as 39.46 (4.22) mm (range, 15.80-50.80 mm; 95% confidence interval (CI), 38.69-40.22 mm). The diameter of internal auditory pore was measured as 5.39 (0.77) mm (range, 3.40-8.20 mm; 95% CI, 5.25-5.53 mm). The distance of AB was measured as 41.10 (4.22) mm (range, 34.90-51.30 mm; 95% CI, 39.43-42.77 mm). The distance of BC was measured as 5.93 (1.31) mm (range, 4.10-7.50 mm; 95% CI, 5.70-6.17 mm). The vertical distance was measured as 2.33 (0.26) mm (range, 1.87-2.80 mm; 95% CI, 2.23-2.42 mm).
  
  
  CONCLUSIONS
  These abovementioned results can help to locate these structures to help in minimizing surgical trauma to the nerve and blood vessels.
authors: From the *Department of the Anatomy, College of Basic Medicine, Jilin University; †The Third Affiliated Hospital of Jilin University; and ‡MCH Hospital of Jilin Province, Changchun City, China.
authors: Xiangliang
authors: X
authors: Liu
authors: Kailiang
authors: K
authors: Cheng
authors: Li
authors: L
authors: Li
authors: Bin
authors: B
authors: Zhang
authors: Shihui
authors: S
authors: Guan
authors: Li
authors: L
authors: Chen
authors: Yu
authors: Y
authors: Chen
authors: Youqiong
authors: Y
authors: Li
authors: Lina
authors: L
authors: Yi
authors: Huayang
authors: H
authors: Wang
authors: Ying
authors: Y
authors: Lai
mesh_terms: D000328:Adult; D000368:Aged; D054893:Cone-Beam Computed Tomography / Q000379:methods*; D003399:Craniotomy / Q000379:methods*; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008297:Male; D008875:Middle Aged; D009464:Neuroma, Acoustic / Q000000981:diagnostic imaging* / Q000601:surgery*; D012016:Reference Values; D036542:Tomography, Spiral Computed / Q000379:methods*; D055815:Young Adult