Donghyun Kim1,2, J. Rock Hadley1, Glen Morrell1,3
1Utah Center for Advanced Imaging Research, University of Utah, Salt Lake City, UT, USA; 2Physics Department, University of Utah, Salt Lake City, UT, USA; 3Department of Radiology, University of Utah, Salt Lake City, UT, USA
An RF excitation coil with uniform transverse magnetic field amplitude but linearly varying phase has been shown to be optimal for fidelity of excitation with parallel transmission, and is also useful for reduced SAR excitation and for gradient-less imaging (TRASE). Such field profiles have been previously obtained with twisted birdcage coil designs. We present simulation results for a new coil design based on non-resonant microstrips which achieves excellent homogeneity of the transverse magnetic field with linear phase variation along the long axis of the coil.