RT Journal Article SR Electronic JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1663 OP 1663 DO 10.3174/ajnr.P0045 VO 38 IS 9 A1 Schonfeld, Steven M. YR 2017 UL http://www.ajnr.org/content/38/9/1663.abstract AB