RT Journal Article SR Electronic T1 Reply: JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP E40 OP E40 DO 10.3174/ajnr.A4711 VO 37 IS 4 A1 van Rooij, W.J. A1 van Eijck, M. A1 Bechan, R. A1 Roks, G. YR 2016 UL http://www.ajnr.org/content/37/4/E40.abstract AB