Parallel 2D excitation of thin limited slice profiles

The concept of parallel excitation allows for substantial shortening of multidimensional pulses designed for selection of arbitrarily-defined regions of interests. In this work, the use of accelerated 2D pulses is investigated experimentally for excitation of slice profiles with a limited FOV. The excitation trajectories used were based on EPI traversals in transmit k-space and were undersampled by skipping the PE lines. The feasibility of PEX was tested in a phantom on a 3T MRI system with 8 RF channels. The advantages and disadvantages of different Cartesian encoding schemes are compared based on the experimental data obtained.

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