RT Journal Article SR Electronic T1 Reply: JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP E71 OP E71 DO 10.3174/ajnr.A2176 VO 31 IS 8 A1 Bag, A.K. A1 Cure, J.K. A1 Chapman, P.R. A1 Roberson, G.H. A1 Shah, R. YR 2010 UL http://www.ajnr.org/content/31/8/E71.abstract AB