RT Journal Article SR Electronic T1 Interventional Standards JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology DO 10.3174/ajnr.A1952 A1 H. Cloft YR 2009 UL http://www.ajnr.org/content/early/2009/11/19/ajnr.A1952.abstract AB