Clinical use of a nonferromagnetic needle for magnetic resonance-guided biopsy.
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.
Mueller
P R
PR
Department of Radiology, Massachusetts General Hospital, Boston 02114.
Stark
D D
DD
Simeone
J F
JF
Saini
S
S
Hahn
P F
PF
Steiner
E
E
Beaulieu
P
P
Wittenberg
J
J
Ferrucci
J T
JT
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
D013193:Stainless Steel