title: [Onyx embolization for treatment of dural arteriovenous fistula: comparison of long- distance versus routine injection method].
abstract: OBJECTIVE
  To compare the efficacy, clinical characteristics, safety, injection time and radiation exposure of Onyx embolization using a long-distance injection method and routine injection method for management of dural arteriovenous fistula (DAVF).
  
  
  METHODS
  The clinical data were retrospectively analyzed in 59 patients with DAVF treated with Onyx embolization using long-distance injection method (28 patients) and routine injection method (31 patients). The efficacy, safety, injection time and radiation exposure during Onyx embolization were compared between the two injections methods.
  
  
  RESULTS
  The average radiation dose exposure to the surgeon per procedure was significantly lower in the long-distance injection group than in the routine group. The injection time (P=0.53), injection volume (P=0.78), number of supply arteries (P=0.80), Cognard types (P=0.67), and effect of embolization (P=0.88) were all similar between the two groups.
  
  
  CONCLUSIONS
  Endovaseular treatment of intracranial DAVF with Onyx embolization using the long-distance injection method is feasible, safe and effective and can reduce the radiation exposure to the surgeon.
authors.affiliation: Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.E-mail: hexy@smu.edu.cn.
authors.forename: Xiao-Yan
authors.initials: XY
authors.lastname: He
authors.forename: Guo-Zhong
authors.initials: GZ
authors.lastname: Zhang
authors.forename: Ming-Zhou
authors.initials: MZ
authors.lastname: Li
authors.forename: Gang
authors.initials: G
authors.lastname: Wang
authors.forename: Dan
authors.initials: D
authors.lastname: Liu
authors.forename: Song-Tao
authors.initials: ST
authors.lastname: Qi
authors.forename: Wei-Guang
authors.initials: WG
authors.lastname: Li
authors.forename: Wen-Feng
authors.initials: WF
authors.lastname: Feng
mesh_terms: D001158:Arteries; D020785:Central Nervous System Vascular Malformations / Q000628:therapy*; D004121:Dimethyl Sulfoxide / Q000627:therapeutic use*; D004621:Embolization, Therapeutic; D006801:Humans; D011145:Polyvinyls / Q000627:therapeutic use*; D012189:Retrospective Studies; D016896:Treatment Outcome
chemical_list: C450660:Onyx copolymer; D011145:Polyvinyls; D004121:Dimethyl Sulfoxide