RT Journal Article SR Electronic T1 Historical Note JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 342 OP 342 VO 23 IS 2 A1 Guglielmi, Guido YR 2002 UL http://www.ajnr.org/content/23/2/342.abstract AB