RT Journal Article SR Electronic JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 207 OP 207 DO 10.3174/ajnr.P0050 VO 39 IS 2 A1 Tomsick, Thomas A. YR 2018 UL http://www.ajnr.org/content/39/2/207.abstract AB