Interactive Real-Time MRI-Guided Needle Tracking using Scanner Remote Control
Amanda Aleong1, Junichi Tokuda2, Pedro Moreira2, Ravi Seethamraju3, Gerald Moran4, Himanshu Bhat5, and Robert Weersink6
1Biomedical Engineering, University of Toronto, Toronto, ON, Canada, 2Radiology, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, United States, 3Siemens Medical Solutions USA Inc., Boston, MA, United States, 4Siemens Healthcare Ltd, Vineland, ON, Canada, 5Siemens Medical Solutions USA Inc., Newton, MA, United States, 6University of Toronto, Toronto, ON, Canada
MRI offers the gold standard for delineating cancerous lesions in soft tissue. Minimally invasive needle-based interventions require the accurate placement of multiple long, flexible needles at the target site. The manual tracking of needles in MR images is a time-consuming task that is further challenged by needle deflection. Automated needle segmentation offers the means to evaluate the alignment of the needle to the scan plane. This work demonstrates automatic needle tracking using remote scan control to dynamically update the scan plane of a real-time MR sequence. Automatic scan plane alignment is validated, and the feasibility of needle tracking is assessed.
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