RT Journal Article SR Electronic T1 Reply: JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP E53 OP E53 DO 10.3174/ajnr.A5584 VO 39 IS 4 A1 J.J. Heit YR 2018 UL http://www.ajnr.org/content/39/4/E53.abstract AB