Abstract #2197

Real time tracking in the fringe field of a MRI scanner: a solution for more accurate MR guided breast biopsies

Ileana Hancu¹, Robert Darrow¹, Eric Fiveland¹, Elizabeth Morris², Dominic Graziani¹, and Mauricio Castillo-Effen¹

¹GE Global Research Center, Niskayuna, NY, United States, ²Memorial Sloan Kettering Cancer Center, New York City, NY, United States

Many factors contribute to the inaccuracy of MR-guided breast biopsies. Significantly, the lack of real-time visualization of tool advancement towards the biopsy site increases their duration and rate of false negatives. In this work, a novel approach for instrument tracking, relying on the spatial variation of the magnetic field, and using a set of 3 axis accelerometers/gyroscopes/magnetic field sensors, is presented. One dimensional tracking with 1.3mm rms error was demonstrated in the fringe field of a 3T magnet.

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