RT Journal Article SR Electronic T1 Reply: JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP E33 OP E33 DO 10.3174/ajnr.A3514 VO 34 IS 3 A1 R. van den Berg A1 J.J. Schneiders A1 S.P. Ferns A1 C.B. Majoie A1 E. Vanbavel YR 2013 UL http://www.ajnr.org/content/34/3/E33.abstract AB