Rene Gumbrecht1,2, Borjan Gagoski1, Elfar Adalsteinsson1,3
1Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, United States; 2Department of Physics, Friedrich-Alexander-University, Erlangen, Germany; 3Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, United States
Parallel RF transmission offers flexible control of magnetization generation and has been successfully applied at 7T for spatially tailored excitations and mitigation of in-plane B1+ inhomogeneity for slice-selection. CHESS pulses are known to provide good frequency selective suppression in proton spectroscopy as long as B1+ inhomogeneity is small. We propose an optimized CHESS pulse design for pTx systems with high variation in peak-to-trough excitation field magnitude.