RT Journal Article SR Electronic T1 Reply: JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP E46 OP E46 DO 10.3174/ajnr.A5511 VO 39 IS 3 A1 Byrne, D. A1 MacMahon, P.J. YR 2018 UL http://www.ajnr.org/content/39/3/E46.abstract AB