| Image reconstructions with the rotating RF coil. | |
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MedLine Citation:
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PMID: 19800824 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Recent studies have shown that rotating a single RF transceive coil (RRFC) provides a uniform coverage of the object and brings a number of hardware advantages (i.e. requires only one RF channel, averts coil-coil coupling interactions and facilitates large-scale multi-nuclear imaging). Motion of the RF coil sensitivity profile however violates the standard Fourier Transform definition of a time-invariant signal, and the images reconstructed in this conventional manner can be degraded by ghosting artifacts. To overcome this problem, this paper presents Time Division Multiplexed-Sensitivity Encoding (TDM-SENSE), as a new image reconstruction scheme that exploits the rotation of the RF coil sensitivity profile to facilitate ghost-free image reconstructions and reductions in image acquisition time. A transceive RRFC system for head imaging at 2 Tesla was constructed and applied in a number of in vivo experiments. In this initial study, alias-free head images were obtained in half the usual scan time. It is hoped that new sequences and methods will be developed by taking advantage of coil motion. |
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Authors:
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A Trakic; H Wang; E Weber; B K Li; M Poole; F Liu; S Crozier |
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Publication Detail:
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Type: Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't Date: 2009-09-11 |
Journal Detail:
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Title: Journal of magnetic resonance (San Diego, Calif. : 1997) Volume: 201 ISSN: 1096-0856 ISO Abbreviation: J. Magn. Reson. Publication Date: 2009 Dec |
Date Detail:
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Created Date: 2009-11-09 Completed Date: 2010-02-02 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9707935 Medline TA: J Magn Reson Country: United States |
Other Details:
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Languages: eng Pagination: 186-98 Citation Subset: IM |
Affiliation:
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The School of Information Technology and Electrical Engineering, The University of Queensland, Australia. trakic@itee.uq.edu.au |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Computer-Aided Design Equipment Design Equipment Failure Analysis Image Enhancement / instrumentation* Image Interpretation, Computer-Assisted / instrumentation*, methods Magnetic Resonance Imaging / instrumentation* Magnetics / instrumentation* Phantoms, Imaging Radio Waves Reproducibility of Results Rotation Sensitivity and Specificity Transducers* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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