Multidimensional <scp>RF</scp> pulse design using auto‐differentiable spin‐domain optimization and its application to reduced field‐of‐view imaging

The proposed algorithm jointly optimizes the RF and gradient waveforms given an initial pulse and a desired spin-domain target pattern. Our approach is broadly applicable to the design of excitation and refocusing pulses and complements existing methods based on describing individual spin isochromatic behavior. Combining 3D excitation and 3D refocusing pulses produced better spatial selectivity than using a combination of one-dimensional and 3D pulses.