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Abstract #1866

Reducing Element Coupling in Array Coils using Off-Tuned Elements

Boris Keil1, Veneta Tountcheva1, Christina Triantafyllou1,2, Lawrence L. Wald1,3

1A. A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, United States; 2McGovern Institute for Brain Research, MIT, Cambridge, MA, United States; 3Harvard-MIT Division of Health Sciences & Technology, Cambridge, MA, United States

An intentionally mistuned approach was tested as a simple additional decoupling method for array coils. To address this issue, we exploit a phenomena associated with preamplifier decoupling, which allows array coil element to be tuned off-resonance from the Larmor frequency without significant degradation of SNR. This approach can potentially facilitate decoupling in arrays with high element coupling, especially in flexible arrays where geometric decoupling from overlap or shared impedances is not feasible for all positions of the flexing former.