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

Research output: Contribution to journalArticle

1 Citation (Scopus)

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 B 1 + inhomogeneity. Experimental demonstrations of fully segmented and single-shot k-space sampling patterns are presented.

Original languageEnglish (US)
Pages (from-to)93-100
Number of pages8
JournalJournal of Magnetic Resonance
Volume299
DOIs
StatePublished - Feb 1 2019

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resilience
sweep frequency
inhomogeneity
Demonstrations
Trajectories
Sampling
pulses
shot
waveforms
pulse duration
sampling
trajectories
gradients

Keywords

  • 2D pulse
  • Adiabatic pulse
  • B0 inhomogeneity
  • B1 inhomogeneity
  • Frequency-modulated
  • MRI
  • Radiofrequency pulse

PubMed: MeSH publication types

  • Journal Article

Cite this

Two-dimensional frequency-swept pulse with resilience to both B 1 and B 0 inhomogeneity . / Mullen, Michael; Kobayashi, Naoharu; Garwood, Michael.

In: Journal of Magnetic Resonance, Vol. 299, 01.02.2019, p. 93-100.

Research output: Contribution to journalArticle

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