RT Journal Article SR Electronic T1 Reply: JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP E141 OP E141 DO 10.3174/ajnr.A2642 VO 32 IS 7 A1 Zuccoli, G. A1 Panigrahy, A. A1 Bailey, A. A1 Fitz, C. YR 2011 UL http://www.ajnr.org/content/32/7/E141.abstract AB