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Clinical use of a nonferromagnetic needle for magnetic resonance-guided biopsy
P R Mueller1, D D Stark, J F Simeone
1Department of Radiology, Massachusetts General Hospital, Boston 02114.
Gastrointestinal Radiology
|January 1, 1989
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.