RT Journal Article SR Electronic T1 Reply: JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP E62 OP E62 DO 10.3174/ajnr.A5259 VO 38 IS 9 A1 Tanpitukpongse, T.P. A1 Petrella, J.R. YR 2017 UL http://www.ajnr.org/content/38/9/E62.abstract AB