RT Journal Article SR Electronic T1 Reply to Letter Regarding Interpretation of Results of ACTIVE Study JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 2436 OP 2437 VO 26 IS 9 A1 Sluzewski, Menno A1 van Rooij, Willem-Jan YR 2005 UL http://www.ajnr.org/content/26/9/2436.abstract AB