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.A2642 A1 G. Zuccoli A1 A. Panigrahy A1 A. Bailey A1 C. Fitz YR 2011 UL http://www.ajnr.org/content/early/2011/05/19/ajnr.A2642.abstract AB