title: Clinical use of a nonferromagnetic needle for magnetic resonance-guided biopsy.
abstract: Five patients who had liver lesions detected by magnetic resonance (MR) and/or computed tomography (CT) were biopsied using MR guidance with a specially designed nonferromagnetic needle. The 20-gauge needle was constructed from Type 316 stainless steel in order to maximize needle visibility and minimize needle-tip artifact. In all cases adequate tissue was obtained for diagnosis and no side effects were observed during the biopsy or on clinical follow-up despite the fact that the needle was within the patient in MR for an average of 30 min.
authors.affiliation: Department of Radiology, Massachusetts General Hospital, Boston 02114.
authors.forename: P R
authors.initials: PR
authors.lastname: Mueller
authors.forename: D D
authors.initials: DD
authors.lastname: Stark
authors.forename: J F
authors.initials: JF
authors.lastname: Simeone
authors.forename: S
authors.initials: S
authors.lastname: Saini
authors.forename: P F
authors.initials: PF
authors.lastname: Hahn
authors.forename: E
authors.initials: E
authors.lastname: Steiner
authors.forename: P
authors.initials: P
authors.lastname: Beaulieu
authors.forename: J
authors.initials: J
authors.lastname: Wittenberg
authors.forename: J T
authors.initials: JT
authors.lastname: Ferrucci
mesh_terms: D001707:Biopsy, Needle / Q000295:instrumentation*; D006801:Humans; D008099:Liver / Q000473:pathology*; D008107:Liver Diseases / Q000473:pathology*; D008279:Magnetic Resonance Imaging; D009339:Needles; D013193:Stainless Steel; D014057:Tomography, X-Ray Computed
chemical_list: D013193:Stainless Steel