TY - JOUR T1 - <em>Reply:</em> JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. DO - 10.3174/ajnr.A5511 AU - D. Byrne AU - P.J. MacMahon Y1 - 2018/12/21 UR - http://www.ajnr.org/content/early/2017/12/21/ajnr.A5511.abstract N2 - ER -