Wouter Koning1, Johanneke H. Bluemink1, Vincent O. Boer1, Alexander Raaijmakers1, Anke Henning2, Jaco J.M. Zwanenburg1, Cornelis A.T. van den Berg1, Peter R. Luijten1, Dennis J.W. Klomp1
1University Medical Center, Utrecht, Netherlands; 2ETH, Zurich, Switzerland
For neck imaging with 7T MRI the versatility of 2 and a 4 channel transmit array was evaluated. The array consists of a neck pillow filled with D2O. The pillow acts as a leaky waveguide in which a wave is fed by 2 or 4 radiative antennas. RF shimming is used to demonstrate versatility: focussing the RF with the 2 channel system allows imaging of carotids and spine. Going from 2 to 4 channels allows for homogeneity improvement and reduction of SAR.