RT Journal Article SR Electronic T1 Arachnoid cyst of the velum interpositum. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1127 OP 1127 VO 10 IS 5 A1 Hartmann, T M A1 Braun, S D A1 Kieffer, H L YR 1989 UL http://www.ajnr.org/content/10/5/1127.abstract AB