RT Journal Article SR Electronic T1 Metallic postoperative artifacts on cervical MR. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 747 OP 749 VO 14 IS 3 A1 M T Yoshino A1 O M Temeltas A1 L P Carter A1 T Lowe A1 A Darkazanli YR 1993 UL http://www.ajnr.org/content/14/3/747.abstract AB Spectroscopy of cervical diskectomy specimens obtained from sheep demonstrated that metallic susceptibility artifacts are produced by microscopic amounts of nickel, copper, and zinc. Sufficient quantities of metals to produce artifacts are deposited only by contact of metal drill bits and suction tips. If these instruments do not come in contact during surgery, susceptibility artifacts are not observed.