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Biopsy Needle Artifact Localization in MRI-guided Robotic Transrectal Prostate Intervention

Institution:	1Department of Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA. 2Laboratory for Computational Sensing and Robotics, Johns Hopkins University, Baltimore, MD, USA. 3Radiation Oncology, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA. 4Queen’s University, Kingston, ON, Canada. 5Department of Computer Science, Johns Hopkins University, Baltimore, MD, USA.
Publisher:	IEEE Publishing
Publication Date:	Jul-2012
Journal:	IEEE Trans Biomed Eng.
Volume Number:	59
Issue Number:	7
Pages:	1902-11
Citation:	IEEE Trans Biomed Eng. 2012 Jul;59(7):1902-11.
PubMed ID:	22481805
Keywords:	Needle artifact, transrectal biopsy, prostate intervention, robotic intervention
Appears in Collections:	SNR, NCIGT, SPL
Sponsors:	National Institutes of Health (NIH) under Grant RO1-EB02963 Cancer Care Ontario Research
Generated Citation:	Song S-E., Cho N.B., Iordachita I., Guion P., Fichtinger G., Kaushal A., Camphausen K., Whitcomb L.L. Biopsy Needle Artifact Localization in MRI-guided Robotic Transrectal Prostate Intervention. IEEE Trans Biomed Eng. 2012 Jul;59(7):1902-11. PMID: 22481805.
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Recently a number of robotic intervention systems for magnetic resonance image (MRI)-guided needle placement in the prostate have been reported. In MRI-guided needle interventions, after a needle is inserted, the needle position is often confirmed with a volumetric MRI scan. Commonly used titanium needles are not directly visible in an MR image, but they generate a susceptibility artifact in the immediate neighborhood of the needle. This paper reports the results of a quantitative study of the relationship between the true position of titanium biopsy needle and the corresponding needle artifact position in MR images, thereby providing a better understanding of the influence of needle artifact on targeting errors. The titanium needle tip artifact extended 9 mm beyond the actual needle tip location with tendency to bend towards the scanner’s B0 magnetic field direction, and axially displaced 0.38 mm and 0.32 mm (mean) in scanner’s frequency and phase encoding direction, respectively.

Song-IEEE2012-fig10.jpg (158.341kB)