PubDB - A Study of Needle Image Artifact Localization in Confirmation Imaging of MRI-guided Robotic Prostate Biopsy

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A Study of Needle Image Artifact Localization in Confirmation Imaging of MRI-guided Robotic Prostate Biopsy

Song S-E.1, Cho N.B.1, Iordachita I.1, Guion P.2, Fichtinger G.3, Whitcomb L.L.1
Institution:
1Laboratory for Computational Sensing and Robotics (LCSR) and Department of Mechanical Engineering (ME), Johns Hopkins University (JHU), Baltimore, MD, USA.
2Radiation Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
3School of Computing, Queen’s University, Kingston, Ontario, Canada.
Publication Date:
May-2011
Journal:
IEEE Int Conf Robot Autom
Volume Number:
2011
Pages:
4834-9
Citation:
IEEE Int Conf Robot Autom. 2011 May;2011:4834-9.
PubMed ID:
22423338
PMCID:
PMC3299982
Appears in Collections:
SNR
Sponsors:
R01 EB002963/EB/NIBIB NIH HHS/United States
Generated Citation:
Song S-E., Cho N.B., Iordachita I., Guion P., Fichtinger G., Whitcomb L.L. A Study of Needle Image Artifact Localization in Confirmation Imaging of MRI-guided Robotic Prostate Biopsy. IEEE Int Conf Robot Autom. 2011 May;2011:4834-9. PMID: 22423338. PMCID: PMC3299982.
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Recently several systems for magnetic resonance image (MRI) guided needle placement in the prostate have been reported. In comparison to conventional ultrasound-guided needle placement in the prostate, these MRI-guided systems promise improved targeting accuracy for prostate intervention procedures including biopsy, fiducial marker insertion, injection and focal therapy. 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 relation between the true position of titanium biopsy needle and the corresponding needle artifact position in MR images. The titanium needle artifact was found to be displaced 0.38 mm and 0.32 mm shift in scanner's frequency and phase encoding direction, respectively. The artifact at the tip of the titanium needle was observed to bend toward the scanner's B(0) magnetic field direction.

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