RT Journal Article SR Electronic T1 Reply JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1365 OP 000 VO 21 IS 7 A1 Reinhard Groell YR 2000 UL http://www.ajnr.org/content/21/7/1365.1.abstract