| RF coil considerations for short-T2 MRI. | |
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MedLine Citation:
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PMID: 20665825 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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With continuing hardware and pulse sequence advancements, modern MRI is gaining sensitivity to signals from short-T(2) (1)H species under practical experimental conditions. However, conventional MRI coils are typically not designed for this type of application, as they often contain proton-rich construction materials that may contribute confounding (1)H background signal during short-T(2) measurements. An example of this is shown herein. Separately, a loop-gap style coil was used to compare different coil construction materials and configurations with respect to observed (1)H background signal sizes in a small animal imaging system. Background signal sources were spatially identified and quantified in a number of different coil configurations. It was found that the type and placement of structural coil materials around the loop-gap resonator, as well as the coil's shielding configuration, are critical determinants of the coil's background signal size. Although this study employed a loop-gap resonator design, these findings are directly relevant to standard volume coils commonly used for MRI. |
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Authors:
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R Adam Horch; Ken Wilkens; Daniel F Gochberg; Mark D Does |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, Non-P.H.S. |
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: 64 ISSN: 1522-2594 ISO Abbreviation: Magn Reson Med Publication Date: 2010 Dec |
Date Detail:
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Created Date: 2010-11-25 Completed Date: 2011-04-19 Revised Date: 2011-12-21 |
Medline Journal Info:
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Nlm Unique ID: 8505245 Medline TA: Magn Reson Med Country: United States |
Other Details:
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Languages: eng Pagination: 1652-7 Citation Subset: IM |
Affiliation:
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Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee 37232-2310, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Cadaver Copper Equipment Design Femur / anatomy & histology* Humans Imaging, Three-Dimensional Magnetic Resonance Imaging / instrumentation* Polycarboxylate Cement Polytetrafluoroethylene Radio Waves |
| Grant Support | |
ID/Acronym/Agency:
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EB001452/EB/NIBIB NIH HHS; EB001744/EB/NIBIB NIH HHS; R01 EB001452-04/EB/NIBIB NIH HHS; R01 EB001744-05A1/EB/NIBIB NIH HHS |
| Chemical | |
Reg. No./Substance:
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0/Polycarboxylate Cement; 25766-59-0/polycarbonate; 7440-50-8/Copper; 9002-84-0/Polytetrafluoroethylene |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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