RT Journal Article SR Electronic T1 Retained sponge in the neck: MR appearance. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1564 OP 1565 VO 16 IS 7 A1 F Boyvat A1 I Saatçi A1 M N Ozmen A1 H S Cekirge YR 1995 UL http://www.ajnr.org/content/16/7/1564.abstract