MRI-guided vacuum-assisted breast biopsy: A phantom and patient evaluation of targeting accuracy

Purpose To determine the spatial localization errors of magnetic resonance imaging (MRI)‐guided core biopsy for breast lesions using the handheld vacuum‐assisted core biopsy device in phantoms and patients. Materials and Methods Biopsies were done using a 10‐gauge handheld vacuum‐assisted core biops...

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Bibliographic Details
Published in:Journal of magnetic resonance imaging 2009-08, Vol.30 (2), p.424-429
Main Authors: El Khouli, Riham H., Macura, Katarzyna J., Barker, Peter B., Elkady, Laila M., Jacobs, Michael A., Vogel-Claussen, Jens, Bluemke, David A.
Format: Article
Language:English
Subjects:
biopsy
Biopsy - methods
breast cancer
Breast Neoplasms - pathology
Female
gadolinium
Humans
Magnetic Resonance Imaging - methods
Magnetic Resonance Imaging, Interventional - methods
Middle Aged
MRI
phantom study
Phantoms, Imaging
Retrospective Studies
Vacuum
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Summary:Purpose To determine the spatial localization errors of magnetic resonance imaging (MRI)‐guided core biopsy for breast lesions using the handheld vacuum‐assisted core biopsy device in phantoms and patients. Materials and Methods Biopsies were done using a 10‐gauge handheld vacuum‐assisted core biopsy system (Vacora, Bard, AZ, USA) on a 1.5T MRI scanner (Philips Achieva, Best, The Netherlands). A standardized biopsy localization protocol was followed by trained operators for multiplanar planning of the biopsy on a separate workstation. Biopsy localization errors were determined as the distance from needle tip to center of the target in three dimensions. Results Twenty MRI‐guided biopsies of phantoms were performed by three different operators. The biopsy target mean size was 6.8 ± 0.6 mm. The overall mean three‐dimensional (3D) biopsy targeting error was 4.4 ± 2.9 mm. Thirty‐two MRI breast biopsies performed in 22 patients were reviewed. The lesion mean size was 10.5 ± 9.4 mm. The overall mean 3D localization error was 5.7 ± 3.0 mm. No significant differences between phantom and patients biopsy errors were found (P > 0.5). Conclusion MRI‐guided handheld vacuum‐assisted core biopsy device shows good targeting accuracy and should allow localization of lesions to within ∼5 to 6 mm. J. Magn. Reson. Imaging 2009;30:424–429. © 2009 Wiley‐Liss, Inc.
ISSN:1053-1807
1522-2586
DOI:10.1002/jmri.21831