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Abstract #1289

Sensing of Birdcage Rung Currents for Detection of Anomalous Loading

Christopher Ellenor 1 , Pascal Stang 1,2 , John Pauly 1 , and Greig Scott 1

1 Electrical Engineering, Stanford University, Stanford, CA, United States, 2 Procyon Engineering, San Jose, CA, United States

A birdcage coil is fitted with optically coupled current sensors on each of its rungs. This tool gives new, rapid and realtime information about the spatial distribution of current in the coil under different loading conditions. The detection of anomalous loading conditions may be indicative of certain RF safety hazards such as resonant wire coupling or strong coupling to tissue through the bore wall, leading to burns. Phantom experiments are conducted and distortion of the rung current pattern due to anomalous loading is observed.

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