Abstract
This paper reports a novel system for magnetic resonance imaging (MRI) guided transrectal prostate interventions, such as needle biopsy, fiducial marker placement, and therapy delivery. The system utilizes a hybrid tracking method, comprised of passive fiducial tracking for initial registration and subsequent incremental motion measurement along the degrees of freedom using fiber-optical encoders and mechanical scales. Targeting accuracy of the system is evaluated in prostate phantom experiments. Achieved targeting accuracy and procedure times were found to compare favorably with existing systems using passive and active tracking methods. Moreover, the portable design of the system using only standard MRI image sequences and minimal custom scanner interfacing allows the system to be easily used on different MRI scanners.
Publication types
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Evaluation Study
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Research Support, N.I.H., Extramural
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Research Support, U.S. Gov't, Non-P.H.S.
MeSH terms
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Algorithms
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Artificial Intelligence
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Biopsy, Needle / instrumentation*
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Biopsy, Needle / methods
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Equipment Design
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Equipment Failure Analysis
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Humans
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Image Enhancement / instrumentation
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Image Enhancement / methods
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Image Interpretation, Computer-Assisted / instrumentation*
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Image Interpretation, Computer-Assisted / methods
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Imaging, Three-Dimensional / instrumentation
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Imaging, Three-Dimensional / methods
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Magnetic Resonance Imaging, Interventional / instrumentation*
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Magnetic Resonance Imaging, Interventional / methods
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Male
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Pattern Recognition, Automated / methods
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Pilot Projects
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Prostatectomy / methods*
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Prostatic Neoplasms / pathology*
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Prostatic Neoplasms / surgery*
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Rectum / pathology
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Rectum / surgery
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Reproducibility of Results
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Robotics / instrumentation*
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Robotics / methods
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Sensitivity and Specificity
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User-Computer Interface