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PubMed · 11241713

Efficient off-resonance correction for spiral imaging.

K S Nayak·C M Tsai·C H Meyer·D G Nishimura
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Abstract

A new spiral imaging technique incorporates the acquisition of a field map into imaging interleaves. Variable density spiral trajectories are designed to oversample the central region of k-space, and interleaves are acquired at two different echo times. A field map is extracted from this data and multifrequency reconstruction is used to form an off-resonance corrected image using the entire dataset. Simulation, phantom, and in vivo results indicate that this technique can be used to achieve higher image and/or field map spatial resolution compared to conventional techniques. Magn Reson Med 45:521-524, 2001.

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ArtifactsCoronary VesselsElectrocardiographyHumansImage EnhancementImage Processing, Computer-AssistedMagnetic Resonance ImagingPhantoms, ImagingReference ValuesJournal ArticleResearch Support, Non-U.S. Gov'tResearch Support, U.S. Gov't, P.H.S.

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K S Nayak, C M Tsai, C H Meyer, D G Nishimura. 2001. Efficient off-resonance correction for spiral imaging.. https://doi.org/10.1002/1522-2594(200103)45%3A3%3C521%3A%3Aaid-mrm1069%3E3.0.co%3B2-6

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