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 981 OP 983 VO 9 IS 5 A1 Spiegel, S M A1 Nixon, B A1 TerBrugge, K A1 Chiu, M C A1 Schutz, H YR 1988 UL http://www.ajnr.org/content/9/5/981.abstract AB