title: [Anatomical study and three dimensional image characteristic analysis of basicranial artery and its clinical significance].
abstract: OBJECTIVE
  To observe and measure the inside diameter of basicranial arteries, the angulation of main arteries, the three dimensional image characteristic of internal carotid arteries and the anatomical variation of Willis circle.
  
  
  METHODS
  The arteries of 30 formalin-fixed adult heads were injected with latex after which the caliber and characteristic of cerebral arteries were observed and measured. The three dimensional image characteristic of internal carotid arteries and its branches were measured using 3D-DSA.
  
  
  RESULTS
  (1) Main artery caliber: origin of internal carotid artery (Left 5.12 +/- 1.48 mm; Right 5.11 +/- 1.42 mm); origin of middle cerebral artery (Left 2.93 +/- 1.44 mm; Right 2.92 +/- 1.46 mm); origin of anterior cerebral artery (Left 2.63 +/- 1.33 mm; Right 2.61 +/- 1.32 mm); origin of vertebral artery (Left 4.37 +/- 1.21 mm; Right 3.22 +/- 1.64 mm); origin of basilar artery (4.45 +/- 1.28 mm); origin of posterior cerebral artery (Left 2.62 +/- 1.36 mm; Right 2.61 +/- 1.22 mm). (2) The angulation of main arteries: C1, 2 of ICA and C4, 5 of ICA (Left 32 +/- 22 degrees; Right 36 +/- 28 degrees ); ICA and ACA (Left 43 +/- 26 degrees; Right 46 +/- 28 degrees). (3) The results show that anatomical and three dimensional image characteristic of internal carotid arteries have no difference (P > 0.05). (4) The anatomical variation of Willis circle: Type O (56.7%); Type A (16.7%); Type P (20.0%); Type AP (6.7%).
  
  
  CONCLUSIONS
  It is helpful to measure the inside diameter of basicranial arteries for the selection of various catheter in interventional neuroradiology, to observe the angulation of main arteries and the three dimensional image characteristic of internal carotid arteries for the moulding of various catheter in endovascular therapy and to master the anatomical variation of Willis circle for decreasing complications of endovascular treatment and judging prognosis of cerebrovascular diseases.
authors.affiliation: Department of Neurosurgery, Affiliated Hospital of Guiyang Medical University, Guiyang 550004, China.
authors.forename: Hua
authors.initials: H
authors.lastname: Yang
authors.forename: Jian
authors.initials: J
authors.lastname: Liu
authors.forename: Jing-chuan
authors.initials: JC
authors.lastname: Wang
authors.forename: Chuang-xi
authors.initials: CX
authors.lastname: Liu
authors.forename: Ye-zhong
authors.initials: YZ
authors.lastname: Sun
authors.forename: Guo-qiang
authors.initials: GQ
authors.lastname: Han
authors.forename: Fang-you
authors.initials: FY
authors.lastname: Gao
authors.forename: Chao-sheng
authors.initials: CS
authors.lastname: Kang
authors.forename: Hong-zheng
authors.initials: HZ
authors.lastname: Wang
authors.forename: Jing-hua
authors.initials: JH
authors.lastname: Zhang
mesh_terms: D000328:Adult; D000368:Aged; D001344:Autopsy; D002343:Carotid Artery, Internal / Q000033:anatomy & histology*; D002536:Cerebral Arteries / Q000033:anatomy & histology*; D002941:Circle of Willis / Q000033:anatomy & histology*; D006801:Humans; D021621:Imaging, Three-Dimensional; D008875:Middle Aged; D014711:Vertebral Artery / Q000033:anatomy & histology