Lauri Juhani Lehto1, 2, Djaudat Idiyatullin2, Michael Garwood2, Olli Grhn1, Curt Corum2
1A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Eastern Finland, Finland; 2Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN, United States
SWIFT is an almost zero acquisition delay sequence. Recently it has been shown to exhibit phase contrast even though there is no echo time for phase accumulation as in gradient recalled echo (GRE) type of sequences. SWIFT phase contrast was investigated by imaging an ex vivo rat brain in three different orientations of the fiber bundles of corpus callosum in comparison to B0. SWIFT and GRE showed similarities in their phase contrast. SWIFT phase contrast was more high-pass filtered than GRE phase contrast due to SWIFTs self high-pass filtering property. SWIFT may provide novel phase contrast of short T2 components.
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