RT Journal Article SR Electronic T1 Use of a cervical spine collar during MR studies. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 175 OP 175 VO 8 IS 1 A1 Karkar, L M A1 Pavlicek, W A1 Weinstein, M A YR 1987 UL http://www.ajnr.org/content/8/1/175.1.abstract AB