RT Journal Article SR Electronic T1 The Pathophysiology of Idiopathic Normal Pressure Hydrocephalus: Cerebral Ischemia or Altered Venous Hemodynamics? JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology DO 10.3174/ajnr.A0739 A1 G.A. Bateman YR 2007 UL http://www.ajnr.org/content/early/2007/10/09/ajnr.A0739.abstract AB