title: MR staging of acute dural sinus thrombosis: correlation with venous pressure measurements and implications for treatment and prognosis.
abstract: OBJECTIVE
  To correlate parenchymal brain changes, venous sinus pressure measurements, and outcome in 29 patients with acute dural sinus thrombosis.
  
  
  METHODS
  A retrospective review of 29 patients with angiographically proved acute dural sinus thrombosis was made from January 1989 to December 1993. MR examinations were performed on either a 0.5- or 1.5-T superconductive scanner in multiple planes. Direct dural sinus venography, cerebral angiography, and MR venography were performed. Venous sinus pressure measurements were obtained in 11 of 29 patients.
  
  
  RESULTS
  We identified five distinct stages of brain parenchymal changes; each stage correlated with increasing intradural sinus pressure. The pressures measured in this study ranged from 20 to 50 mm Hg. Brain parenchymal changes were reversible up to stage III if thrombolytic treatment was performed. Beyond stage III, there were some residual changes, even after thrombolysis. All stage V patients died.
  
  
  CONCLUSIONS
  Acute dural sinus thrombosis leads to distinct stages of parenchymal changes, the severity of which depends on the degree of venous congestion, which, in turn, is closely related to intradural sinus pressure. As intradural sinus pressure increases, progression from mild parenchymal change to severe cerebral edema and/or hematoma may occur if thrombolysis is delayed.
authors.affiliation: Department of Radiology, University of Missouri-Kansas City School of Medicine 64108, USA.
authors.forename: F Y
authors.initials: FY
authors.lastname: Tsai
authors.forename: A M
authors.initials: AM
authors.lastname: Wang
authors.forename: V B
authors.initials: VB
authors.lastname: Matovich
authors.forename: M
authors.initials: M
authors.lastname: Lavin
authors.forename: B
authors.initials: B
authors.lastname: Berberian
authors.forename: T M
authors.initials: TM
authors.lastname: Simonson
authors.forename: W T
authors.initials: WT
authors.lastname: Yuh
mesh_terms: D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D000368:Aged; D001921:Brain / Q000473:pathology; D001929:Brain Edema / Q000175:diagnosis / Q000503:physiopathology; D002533:Cerebral Angiography; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D018810:Magnetic Resonance Angiography; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D012189:Retrospective Studies; D012851:Sinus Thrombosis, Intracranial / Q000175:diagnosis* / Q000188:drug therapy / Q000503:physiopathology; D015912:Thrombolytic Therapy; D014690:Venous Pressure / Q000502:physiology*