RT Journal Article SR Electronic T1 Characterization of CSF Hydrodynamics in the Presence and Absence of Tonsillar Ectopia by Means of Computational Flow Analysis JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology DO 10.3174/ajnr.A1489 A1 A. Roldan A1 O. Wieben A1 V. Haughton A1 T. Osswald A1 N. Chesler YR 2009 UL http://www.ajnr.org/content/early/2009/03/19/ajnr.A1489.abstract AB