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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
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pubmed:dateCreated |
1998-10-6
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pubmed:abstractText |
Biological samples have a high dielectric constant that can shorten RF wavelengths by a factor of 8 relative to the vacuum. At high field strengths, finite wavelength effects within larger samples are the dominant cause of RF field nonuniformity. A coil design is presented that can reduce and even eliminate this inhomogeneity; 4-T images in phantoms and in the head of a normal volunteer are presented, which demonstrate improved homogeneity relative to a standard coil. This coil design should aid in realizing the potential advantages of imaging large samples at high field strengths.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:status |
MEDLINE
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pubmed:month |
Jul
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pubmed:issn |
0740-3194
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
40
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
49-54
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:9660552-Anatomy, Cross-Sectional,
pubmed-meshheading:9660552-Brain,
pubmed-meshheading:9660552-Electromagnetic Fields,
pubmed-meshheading:9660552-Equipment Design,
pubmed-meshheading:9660552-Humans,
pubmed-meshheading:9660552-Image Enhancement,
pubmed-meshheading:9660552-Magnetic Resonance Imaging,
pubmed-meshheading:9660552-Models, Theoretical,
pubmed-meshheading:9660552-Phantoms, Imaging,
pubmed-meshheading:9660552-Reference Values,
pubmed-meshheading:9660552-Sensitivity and Specificity
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pubmed:year |
1998
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pubmed:articleTitle |
A spiral volume coil for improved RF field homogeneity at high static magnetic field strength.
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pubmed:affiliation |
Department of Radiology, University of Pennsylvania Medical Center, Philadelphia 19104-4283, USA.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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