title: Arterial dissections complicating cerebral angiography and cerebrovascular interventions.
abstract: OBJECTIVE
  Iatrogenic dissections are an uncommon complication of cerebral angiography. We retrospectively reviewed 12 cases of arterial dissections complicating cerebral angiography and cerebrovascular interventions to evaluate the clinical course of these dissections.
  
  
  METHODS
  Cases from a large tertiary center performing a large number of neurovascular procedures were collected retrospectively. The patients' medical records and imaging studies were reviewed, with particular attention given to the cause of the dissection, the development of ischemic events resulting from the dissection, and the treatment used.
  
  
  RESULTS
  Each of nine dissections affected a vertebral artery, each of two affected an internal carotid artery, and one affected a common carotid artery. The prevalence of iatrogenic dissections was 0.4%. Seven of the dissections were noted at the time of contrast material injection for the filming of cerebral angiograms. The other five dissections occurred during catheter or wire manipulations for interventional neuroradiologic procedures. Five of the patients in our series were treated with IV administered heparin for 24 to 48 hours. The other seven patients had recently suffered acute intracranial hemorrhage or undergone neurosurgery and could not undergo anticoagulant therapy. None of the patients developed symptoms of ischemia, but one was later found to have an asymptomatic infarct in the territory supplied by the dissected artery.
  
  
  CONCLUSIONS
  Arterial dissections are an uncommon complication of cerebral angiography and cerebrovascular interventions and usually have a benign clinical course.
authors.affiliation: Department of Radiology, Emory University Hospital, Atlanta, GA 30322, USA.
authors.forename: H J
authors.initials: HJ
authors.lastname: Cloft
authors.forename: M E
authors.initials: ME
authors.lastname: Jensen
authors.forename: D F
authors.initials: DF
authors.lastname: Kallmes
authors.forename: J E
authors.initials: JE
authors.lastname: Dion
mesh_terms: D000328:Adult; D000368:Aged; D000784:Aortic Dissection / Q000209:etiology* / Q000628:therapy; D020212:Carotid Artery Injuries / Q000209:etiology* / Q000628:therapy; D020215:Carotid Artery, Internal, Dissection / Q000209:etiology / Q000628:therapy; D002533:Cerebral Angiography / Q000009:adverse effects*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015641:Radiography, Interventional / Q000009:adverse effects*; D012189:Retrospective Studies; D014711:Vertebral Artery / Q000293:injuries*