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Abstract #2899

A Spatial-Spectral Pulse Approach for Reduced FOV Excitation using Second-Order Gradients

Chao Ma1, Kevin F. King2, Dan Xu2, Zhi-Pei Liang3

1Electrical & Computer Engineering , University of Illinois, Urbana, IL, United States; 2Global Applied Science Lab, General Electric Healthcare, Waukesha, WI, United States; 3Electrical & Computer Engineering, University of Illinois, Urbana, IL, United States

This paper presents a method to design RF pulses for reduced FOV excitation using second-order gradients and spatial-spectral pulses. By taking advantage of the spatial dependence introduced by the second-order gradients, a thin disk can be excited using a 2D spatial-spectral pulse, i.e. covering 2D excitation k-space instead of 3D excitation k-space in the case of using the first-order gradients. The proposed method was validated using Bloch equation simulation.