RT Journal Article SR Electronic T1 Gradient echoes: simplified. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 209 OP 210 VO 10 IS 1 A1 Norfray, J F A1 Taveras, J M YR 1989 UL http://www.ajnr.org/content/10/1/209.abstract AB