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Radiology, Vol 205, 203-208, Copyright © 1997 by Radiological Society of North America
ARTICLES |
WA Berg, TL Krebs, C Campassi, LS Magder and CC Sun
Department of Diagnostic Radiology, University of Maryland School of Medicine, Baltimore 21201, USA.
PURPOSE: To compare commercially available 14-guage core biopsy guns and 11- and 14-gauge, directional, vaccum-assisted biopsy probes for tissue yield and fragmentation. MATERIALS AND METHODS: One hundred passes were made through fresh turkey breasts by using each of 11 14- gauge, automated biopsy gun-needle combinations and a directional, stereotactic, vacuum-assisted biopsy system equipped with 11- or 14- gauge probes. Specimens were measured for total weight, individual length, diameter, and number of fragments. RESULTS: Among the handheld devices, the Pro-Mag 2.2 gun (Manan Medical Products, Northbrook, Ill) and 14-gauge Biopsy-Cut needle (Bard, Covington, Ga) had the greatest yield (17.7 mg per core specimen); this combination also produced the greatest percentage of nonfragmented cores (83%). Directional, vacuum- assisted biopsy specimens were significantly larger (P < .001): 36.8 mg per core specimen for the 14-gauge probe and 94.4 mg per core specimen for the 11-gauge probe. Specimens obtained with directional, vacuum- assisted biopsy were more fragmented than those obtained with spring- actuated, two-stage, long-throw, automated biopsy systems. CONCLUSION: Statistically significant differences with various biopsy devices are seen in the breast tissue yield and in fragmentation.
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