Meeting Banner
Abstract #0542

RF Shimming of the Neck Using a 2 & a 4-Channel Travelling Wave Neck Array at 7T MRI

MAGNA25Wouter 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.