RT Journal Article SR Electronic T1 Reply: JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP e42 OP e42 DO 10.3174/ajnr.A1422 VO 30 IS 3 A1 Tosaka, M. YR 2009 UL http://www.ajnr.org/content/30/3/e42.abstract AB