|
rdf:type |
|
|
lifeskim:mentions |
|
|
pubmed:issue |
3
|
|
pubmed:dateCreated |
2009-9-2
|
|
pubmed:abstractText |
The benefits and challenges of highly parallel array coils for head imaging were investigated through the development of a 3T receive-only phased-array head coil with 96 receive elements constructed on a close-fitting helmet-shaped former. We evaluated several designs for the coil elements and matching circuitry, with particular attention to sources of signal-to-noise ratio (SNR) loss, including various sources of coil loading and coupling between the array elements. The SNR and noise amplification (g-factor) in accelerated imaging were quantitatively evaluated in phantom and human imaging and compared to a 32-channel array built on an identical helmet-shaped former and to a larger commercial 12-channel head coil. The 96-channel coil provided substantial SNR gains in the distal cortex compared to the 12- and 32-channel coils. The central SNR for the 96-channel coil was similar to the 32-channel coil for optimum SNR combination and 20% lower for root-sum-of-squares combination. There was a significant reduction in the maximum g-factor for 96 channels compared to 32; for example, the 96-channel maximum g-factor was 65% of the 32-channel value for acceleration rate 4. The performance of the array is demonstrated in highly accelerated brain images.
|
|
pubmed:grant |
|
|
pubmed:commentsCorrections |
http://linkedlifedata.com/resource/pubmed/commentcorrection/19623621-10542355,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19623621-15282821,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19623621-15334584,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19623621-15389946,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19623621-15389961,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19623621-16032696,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19623621-16088885,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19623621-16261576,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19623621-16382800,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19623621-16755538,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19623621-16767762,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19623621-18506789,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19623621-2266841,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19623621-7651124,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19623621-8661287,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19623621-9358462,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19623621-9542737
|
|
pubmed:language |
eng
|
|
pubmed:journal |
|
|
pubmed:citationSubset |
IM
|
|
pubmed:status |
MEDLINE
|
|
pubmed:month |
Sep
|
|
pubmed:issn |
1522-2594
|
|
pubmed:author |
|
|
pubmed:issnType |
Electronic
|
|
pubmed:volume |
62
|
|
pubmed:owner |
NLM
|
|
pubmed:authorsComplete |
Y
|
|
pubmed:pagination |
754-62
|
|
pubmed:dateRevised |
2011-9-26
|
|
pubmed:meshHeading |
|
|
pubmed:year |
2009
|
|
pubmed:articleTitle |
96-Channel receive-only head coil for 3 Tesla: design optimization and evaluation.
|
|
pubmed:affiliation |
Department of Radiology, Massachusetts General Hospital, Charlestown, Massachusetts, USA. gwiggins@nmr.mgh.harvard.edu
|
|
pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't,
Research Support, N.I.H., Extramural
|
