RT Journal Article SR Electronic T1 Dual-Energy CT and Spot Sign JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP E63 OP E63 DO 10.3174/ajnr.A4894 VO 37 IS 10 A1 Vargas, M.I. A1 Lovblad, K. YR 2016 UL http://www.ajnr.org/content/37/10/E63.abstract AB