RT Journal Article SR Electronic T1 Reply: JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP E34 OP E34 DO 10.3174/ajnr.A5447 VO 39 IS 2 A1 R.H. Nunes A1 C.C.-T. Hsu A1 T.W. Watkins A1 A.G. Osborn YR 2018 UL http://www.ajnr.org/content/39/2/E34.abstract AB