PT - JOURNAL ARTICLE AU - Chang, P.D. AU - Chow, D.S. TI - <em>Reply:</em> AID - 10.3174/ajnr.A5913 DP - 2018 Nov 29 TA - American Journal of Neuroradiology 4099 - http://www.ajnr.org/content/early/2018/11/29/ajnr.A5913.short 4100 - http://www.ajnr.org/content/early/2018/11/29/ajnr.A5913.full