RT Journal Article SR Electronic T1 CT recognition of anomalies of the posterior arch of the atlas vertebra: differentiation from fracture. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 176 OP 177 VO 7 IS 1 A1 H L Dorne A1 P H Lander YR 1986 UL http://www.ajnr.org/content/7/1/176.abstract AB