RT Journal Article SR Electronic T1 Reply: JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology DO 10.3174/ajnr.A2174 A1 Gupta, R.K. YR 2010 UL http://www.ajnr.org/content/early/2010/06/25/ajnr.A2174.abstract AB