Abstract #0174

Parallel Transmit (pTx) Capability of Various RF Transmit Elements and Arrays at 7T UHF MRI

Stefan HG Rietsch^1,2, Stephan Orzada¹, and Harald H Quick^1,2

¹Erwin L. Hahn Institute for MR Imaging, University of Duisburg-Essen, Essen, Germany, ²High Field and Hybrid MR Imaging, University Hospital Essen, Essen, Germany

First steps towards whole body imaging with remote arrays at 7T UHF MRI are currently undertaken. Parallel transmit (pTx) capabilities of transmit arrays can be evaluated by the number of degrees of freedom which characterize the shim capabilities. In this work, 16 different pTx arrays with different transmit elements and combinations of transmit elements are simulated to examine inter element coupling behavior, singular values to determine the degrees of freedom and shim capabilities. Combining dipoles and loops seems to be the most promising approach among the investigated pTx arrays.

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