| Hyperpolarized (129) Xe gas lung MRI-SNR and T(2) (*) comparisons at 1.5 T and 3 T. | |
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MedLine Citation:
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PMID: 22294386 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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In this study, the signal-to-noise ratio of hyperpolarized (129) Xe human lung magnetic resonance imaging was compared at 1.5 T and 3 T. Experiments were performed at both B(0) fields with quadrature double Helmholtz transmit-receive chest coils of the same geometry with the same subject loads. Differences in sensitivity between the two field strengths were assessed from the signal-to-noise ratio of multi-slice 2D (129) Xe ventilation lung images obtained at the two field strengths with a spatial resolution of 15 mm × 4 mm × 4 mm. There was a systematically higher signal-to-noise ratio observed at 3 T than at 1.5 T by a factor of 1.25. Mean image signal-to-noise ratio was in the range 27-44 at 1.5 T and 36-51 at 3 T. T 2* of (129) Xe gas in the partially inflated lungs was measured to be 25 ms and 18 ms at 1.5 T and 3 T, respectively. T 2* of (129) Xe gas in fully inflated lungs was measured to be 52 ms and 24 ms at 1.5 T and 3 T, respectively. Magn Reson Med, 2012. © 2012 Wiley Periodicals, Inc. |
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Authors:
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Xiaojun Xu; Graham Norquay; Steven R Parnell; Martin H Deppe; Salma Ajraoui; Ralph Hashoian; Helen Marshall; Paul D Griffiths; Juan Parra-Robles; Jim M Wild |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-1-31 |
Journal Detail:
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Title: Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine Volume: - ISSN: 1522-2594 ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-2-1 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8505245 Medline TA: Magn Reson Med Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2012 Wiley Periodicals, Inc. |
Affiliation:
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Unit of Academic Radiology, University of Sheffield, Sheffield, United Kingdom. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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