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Updated: Jan 31, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
Two-dimensional frequency-swept pulse with resilience to both B1 and B0 inhomogeneity
Michael Mullen1, Naoharu Kobayashi2, Michael Garwood2
1Center for Magnetic Resonance Research and Department of Radiology, University of Minnesota, Minneapolis, MN, USA; School of Physics and Astronomy, University of Minnesota, Minneapolis, MN, USA.
Abstract:
Applications of multidimensional spatially-selective pulses are sometimes limited by their long pulse durations resulting from the need to execute a modulated gradient waveform in concert with RF transmission. Here, we introduce a method to design two-dimensional selective adiabatic pulses using a Cartesian k-space trajectory. The full pulse can be sampled using various undersampled segments to create a multidimensional pulse resilient to large off-resonances. Moreover, the pulse can be designed to be resilient to B1+ inhomogeneity. Experimental demonstrations of fully segmented and single-shot k-space sampling patterns are presented.
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