Can Akgun1, Lance DelaBarre1, Carl J. Snyder1, Gregor Adriany1, Anand Gopinath2, Kamil Ugurbil1, John Thomas Vaughan1
1University of Minnesota-Center for Magnetic Resonance Research, Minneapolis, MN, United States; 2University of Minnesota-Department of Electrical and Computer Engineering, Minneapolis, MN
Multi-channel volume coils can be comprised of an array of transmission line elements operated as independent coils in multiple-channel transmit and receive configurations. In these designs, microstrip transmission elements have been implemented as magnetic field propagating elements. However, at high fields, RF in-homogeneities and inefficiencies require the optimization of these elements. In this study, two different microstrip designs with varying impedance lines; one producing peak B1+ in the center and the other extending usable B1+ along the coil are investigated. Simulation and image results for 8-channel volume coils incorporating these element designs were obtained using a phantom at 7T.