MR-guided breast biopsy using an active marker: A phantom study
| Autor: | Martin Heller, Christoph Albrecht, Tobias Schaeffter, Christian Frahm, Richard Werner, Sascha Krueger, Axel Winkel |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Breast biopsy
Core needle medicine.medical_specialty Biopsy Breast Neoplasms Image processing Imaging phantom Breast Diseases Image Processing Computer-Assisted medicine Humans Radiology Nuclear Medicine and imaging Breast medicine.diagnostic_test Phantoms Imaging business.industry Sepharose X-Rays Biopsy Needle Magnetic resonance imaging Magnetic Resonance Imaging Planning process Female Radiology Nuclear medicine business Biomarkers Mri guided |
| Zdroj: | Journal of Magnetic Resonance Imaging. 24:235-241 |
| ISSN: | 1522-2586 1053-1807 |
| DOI: | 10.1002/jmri.20600 |
| Popis: | Purpose To evaluate the advantages of using an active marker (active micro coil) for MR-guided breast biopsy procedures. Materials and Methods An add-on breast biopsy guidance device used with a standard breast coil was equipped with an active marker. The marker's position was determined with a dedicated MRI sequence. In combination with custom software, the biopsy planning process was reduced basically to defining the target in the diagnostic MR images. Automatic control scans verified the settings of the biopsy guidance device. To measure the targeting accuracy, x-ray control of the needle placement was performed in phantoms containing 36 small titanium cylinders. The reliability of the procedure was evaluated in 24 core needle biopsies on phantoms. Workflow enhancements were analyzed. Results The root mean square deviation of the needle position from the target perpendicular to the needle axis was 1.25 mm, in three-dimensions it was 1.35 mm. All targets were sampled successfully. The duration of a phantom biopsy was nine minutes. Conclusion The use of an active marker can offer advantages for MR-guided breast biopsies in terms of handling and procedure time as well as accuracy. J. Magn. Reson. Imaging 2006. © 2006 Wiley-Liss, Inc. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text