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Abstract #4293

Design considerations for short-wave motion tracking

Christoph Michael Schildknecht1, David Otto Brunner1, Thomas Schmid1, and Klaas Paul Pruessmann1
1Institute for Biomedical Engineering, ETH Zurich and University of Zurich, Zurich, Switzerland

RF short-wave based motion tracking offers interesting prospects by allowing to localize markers without line of site, minimal interaction with the MRI scanner, very short latency and high precision. The design of the employed antenna arrays is however determinant for the performance of the entire system and subject to various requirements. The design criteria and parameters have hence been analyzed and used for optimization of the receiver array geometry. The resulting arrays have then been evaluated using signal simulations as well implemented and verified by bench measurements using a robotic positioning system as reference.

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