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.A4987 A1 W. Brinjikji A1 A. Rouchaud YR 2016 UL http://www.ajnr.org/content/early/2016/10/13/ajnr.A4987.abstract AB