title: [Endovascular treatment of micro-intracranial aneurysms: adverse factors of micro-catheterization and its relevant managements].
abstract: OBJECTIVE
  To investigate adverse factors that may hinder successful placement and stabilization of the microcatheter during endovascular therapy of micro-intracranial aneurysms (≤ 3 mm in maximum diameter), and to explore the relevant managements.
  
  
  METHODS
  Forty-six patients with fifty-one micro-intracranial aneurysms treated by endovascular therapy from June 2001 to October 2009 were retrospectively analyzed for their intervention data.
  
  
  RESULTS
  Adverse factors of optimal micro-catheterization mainly included, tortuosity of the proximal vessels (PVs) and the parent artery (PA), relative large gap in diameter among the PVs, the PA and the microcatheter, relative large divergence in direction among the PVs, the PA and the aneurysm dome, and stent deployed in the PA.
  
  
  CONCLUSIONS
  Carefully considering the direction of the PVs and the PA, the aneurysm's location and dome orientation, choosing the microcatheter and microwire after balancing among their physical properties, as well as utilizing balloon and/or stent assistance, can facilitate micro-catheterization during endovascular treatment of micro-intracranial aneurysms.
authors.affiliation: Department of Neurosurgery, Beijing Hospital, Beijing 100730, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Lu
authors.forename: Da-ming
authors.initials: DM
authors.lastname: Wang
authors.forename: Jia-chun
authors.initials: JC
authors.lastname: Liu
authors.forename: Li-jun
authors.initials: LJ
authors.lastname: Wang
authors.forename: Peng
authors.initials: P
authors.lastname: Qi
authors.forename: Le-le
authors.initials: LL
authors.lastname: Zhai
authors.forename: Xue-li
authors.initials: XL
authors.lastname: Jiang
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002404:Catheterization / Q000379:methods*; D004621:Embolization, Therapeutic / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D002532:Intracranial Aneurysm / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D015607:Stents; D016896:Treatment Outcome