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Abstract #3428

High Precision Tracking of Un-Tuned Micro-Coils for Real-Time Motion Correction Applications

Melvyn B. Ooi1, Murat Aksoy1, Ronald D. Watkins1, Roland Bammer1

1Department of Radiology, Stanford University, Stanford, CA, United States

The ability to track the positions of multiple micro RF-coil “active markers” in the MRI scanner has been the foundation of several recent advances in MR-guided intervention, as well as motion correction applications. The current work demonstrates that un-tuned markers, while simplifying coil design and reducing unwanted RF-related effects, provide sufficient signal for accurate/precise position tracking measurements in a temporal resolution suitable for use in real-time applications. A series of position measurements using un-tuned and tuned markers are performed on a well-defined grid-phantom for comparison.