RT Journal Article SR Electronic T1 MR angiography: reaching adolescence. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1141 OP 1142 VO 12 IS 6 A1 Litt, A W YR 1991 UL http://www.ajnr.org/content/12/6/1141.abstract AB