Two-dimensional frequency-swept pulse with resilience to both B 1 and B 0 inhomogeneity

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 C...

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Bibliographic Details
Published inJournal of magnetic resonance (1997) Vol. 299; p. 93
Main Authors Mullen, Michael, Kobayashi, Naoharu, Garwood, Michael
Format Journal Article
LanguageEnglish
Published United States 01.02.2019
Subjects
B0 inhomogeneity
Frequency-modulated
Adiabatic pulse
2D pulse
MRI
Radiofrequency pulse
B1 inhomogeneity
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Summary: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 B inhomogeneity. Experimental demonstrations of fully segmented and single-shot k-space sampling patterns are presented.
ISSN:1096-0856