1Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba, Canada; 2National Research Council of Canada, Winnipeg, Manitoba, Canada; 3Physics, University of Winnipeg, Winnipeg, Manitoba, Canada
Transmit array spatial encoding (TRASE) is novel gradient-free imaging technique relying on Tx RF phase gradients to spatially encode the transverse magnetization. Ideal phase gradients have uniform magnitudes and linear phase gradients. To perform a 3D TRASE MRI experiment, 2 distinct phase gradients are required for each dimension. A target field approach was used to design a five coil Tx array that can be driven to produce a set six RF phase gradients necessary for 3D TRASE MRI at 3T.