RT Journal Article SR Electronic T1 CT myelography of a fragment of a lumbar disk sequestered posterior to the thecal sac. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 610 OP 611 VO 11 IS 3 A1 J D Lutz A1 R R Smith A1 H M Jones YR 1990 UL http://www.ajnr.org/content/11/3/610.abstract AB