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MR‐guided biopsy of musculoskeletal lesions in a low‐field system
Author(s) -
Koenig Claudius W.,
Duda Stephan H.,
Truebenbach Jochen,
Schott Ulrich G.,
Maurer Franz,
Claussen Claus D.,
Pereira Philippe L.
Publication year - 2001
Publication title -
journal of magnetic resonance imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.563
H-Index - 160
eISSN - 1522-2586
pISSN - 1053-1807
DOI - 10.1002/jmri.1106
Subject(s) - medicine , biopsy , trephine , radiology , soft tissue , fluoroscopy , core biopsy , sampling (signal processing) , magnetic resonance imaging , open biopsy , nuclear medicine , surgery , filter (signal processing) , cancer , breast cancer , computer science , computer vision
Thirty magnetic resonance (MR)‐guided biopsies were obtained from 20 skeletal and 10 soft‐tissue lesions in 31 patients using an open 0.2 T MR system equipped with interventional accessories. The results from aspiration ( N = 3), core biopsy ( N = 15), and transcortical trephine biopsy ( N = 12) were evaluated for accuracy and clinical efficacy. Specimens were successfully obtained from 29 patients. Results were clinically effective in 23 patients, rated definitive in 16, nonconclusive in 9, and unspecific in 2 patients. A false diagnosis due to sampling error occurred in 2 patients, and biopsy sampling was impossible in one case. The best diagnostic yield was achieved from nontranscortical biopsies of osteolytic or soft‐tissue masses. Results from transcortical biopsies were less specific due to the predominance of benign lesions. MR fluoroscopy for needle guidance was applied in 13 patients. Complete needle placement inside the magnet could be performed in 16 patients. MR‐guided biopsy using an open low‐field MR imager is feasible and clinically effective and will become a valuable tool in the management of musculoskeletal lesions. J. Magn. Reson. Imaging 2001;13:761–768. © 2001 Wiley‐Liss, Inc.