| Spread spectrum magnetic resonance imaging. | |
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MedLine Citation:
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PMID: 22042149 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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We propose a novel compressed sensing technique to accelerate the magnetic resonance imaging (MRI) acquisition process. The method, coined spread spectrum MRI or simply s2MRI, consists of pre-modulating the signal of interest by a linear chirp before random k-space under-sampling, and then reconstructing the signal with non-linear algorithms that promote sparsity. The effectiveness of the procedure is theoretically underpinned by the optimization of the coherence between the sparsity and sensing bases. The proposed technique is thoroughly studied by means of numerical simulations, as well as phantom and in vivo experiments on a 7T scanner. Our results suggest that s2MRI performs better than state-of-the-art variable density kspace under-sampling approaches. |
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Authors:
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G Puy; J Marques; R Gruetter; J Thiran; D Van De Ville; P Vandergheynst; Y Wiaux |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-10-26 |
Journal Detail:
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Title: IEEE transactions on medical imaging Volume: - ISSN: 1558-0062 ISO Abbreviation: - Publication Date: 2011 Oct |
Date Detail:
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Created Date: 2011-11-1 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8310780 Medline TA: IEEE Trans Med Imaging Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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