RT Journal Article SR Electronic T1 Reply JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology DO 10.3174/ajnr.A1949 A1 Scollato, A. A1 Gallina, P. A1 Di Lorenzo, N. YR 2009 UL http://www.ajnr.org/content/early/2009/11/26/ajnr.A1949.abstract AB