Stefan HG Rietsch1,2, Stephan Orzada1, and Harald H Quick1,2
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.
