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Abstract #2217

Mutual Coupling Effect Precompensation for Spatial Domain Method Based Parallel Transmission

Yong Pang1, Daniel Vigneron1, 2, Xiaoliang Zhang1, 2

1Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, United States; 2UCSF/UC Berkeley Joint Graduate Group in Bioengineering, San Francisco & Berkeley, CA, United States

In this work, we applied the precompensation method to correct the mutual coupling effect between array elements for the spatial domain method parallel transmission by taking mutual coupling coefficient matrix into pulse design procedure. To investigate its feasibility and efficiency, a 4-element coil array was used and excitation pulses were designed using both the spatial domain method and the precompensation method for comparison. The results show that the proposed precompensation method can effectively reduce the artifacts caused by mutual coupling, yielding enhanced tolerance to mutual coupling of RF arrays in parallel transmission, and providing improved excitation profile.