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Article: Potential advantage of higher-order modes of birdcage coil for parallel imaging

TitlePotential advantage of higher-order modes of birdcage coil for parallel imaging
Authors
KeywordsBirdcage coil
FDTD
G-factor
Higher-order modes
Parallel MRI
Issue Date2006
PublisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/yjmre
Citation
Journal Of Magnetic Resonance, 2006, v. 182 n. 1, p. 160-167 How to Cite?
AbstractThe potential advantages of the higher-order resonant modes of a low-pass birdcage coil for parallel imaging are investigated using FDTD simulations in a spherical phantom. Better parallel imaging performance can be achieved in axial planes than in sagittal planes. If more modes are employed, the average g-factor (gmean) and maximum g-factor (gmax) will be improved for a specific acceleration factor (R). G-factor performance at 3 T (gmean = 1.79, gmax = 3.55) and 7 T (gmean = 1.60, gmax = 2.45) can be achieved even with an acceleration factor as high as four when all six order modes of 12-rung low-pass birdcage coil are incorporated for imaging on a mid-axial plane. For a specific number of channels, the optimum combination of corresponding modes can be obtained for different acceleration factors. Based on the g-factor and SNR performance, the total degenerate multi-mode birdcage coil with six order resonant modes has better homogeneous coverage and SENSE performance than the 8-element phased array coil, although requiring fewer channels. In addition, the dielectric effects at high field can improve the parallel imaging performance. © 2006 Elsevier Inc. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/73505
ISSN
2015 Impact Factor: 2.889
2015 SCImago Journal Rankings: 1.157
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorWang, Cen_HK
dc.contributor.authorQu, Pen_HK
dc.contributor.authorShen, GXen_HK
dc.date.accessioned2010-09-06T06:51:58Z-
dc.date.available2010-09-06T06:51:58Z-
dc.date.issued2006en_HK
dc.identifier.citationJournal Of Magnetic Resonance, 2006, v. 182 n. 1, p. 160-167en_HK
dc.identifier.issn1090-7807en_HK
dc.identifier.urihttp://hdl.handle.net/10722/73505-
dc.description.abstractThe potential advantages of the higher-order resonant modes of a low-pass birdcage coil for parallel imaging are investigated using FDTD simulations in a spherical phantom. Better parallel imaging performance can be achieved in axial planes than in sagittal planes. If more modes are employed, the average g-factor (gmean) and maximum g-factor (gmax) will be improved for a specific acceleration factor (R). G-factor performance at 3 T (gmean = 1.79, gmax = 3.55) and 7 T (gmean = 1.60, gmax = 2.45) can be achieved even with an acceleration factor as high as four when all six order modes of 12-rung low-pass birdcage coil are incorporated for imaging on a mid-axial plane. For a specific number of channels, the optimum combination of corresponding modes can be obtained for different acceleration factors. Based on the g-factor and SNR performance, the total degenerate multi-mode birdcage coil with six order resonant modes has better homogeneous coverage and SENSE performance than the 8-element phased array coil, although requiring fewer channels. In addition, the dielectric effects at high field can improve the parallel imaging performance. © 2006 Elsevier Inc. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/yjmreen_HK
dc.relation.ispartofJournal of Magnetic Resonanceen_HK
dc.subjectBirdcage coilen_HK
dc.subjectFDTDen_HK
dc.subjectG-factoren_HK
dc.subjectHigher-order modesen_HK
dc.subjectParallel MRIen_HK
dc.titlePotential advantage of higher-order modes of birdcage coil for parallel imagingen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1090-7807&volume=182&spage=160&epage=167&date=2006&atitle=Potential+Advantage+of+Higher-order+Modes+of+Birdcage+Coil+for+Parallel+Imagingen_HK
dc.identifier.emailShen, GX: gxshen@eee.hku.hken_HK
dc.identifier.authorityShen, GX=rp00166en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.jmr.2006.06.015en_HK
dc.identifier.scopuseid_2-s2.0-33747881133en_HK
dc.identifier.hkuros132696en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33747881133&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume182en_HK
dc.identifier.issue1en_HK
dc.identifier.spage160en_HK
dc.identifier.epage167en_HK
dc.identifier.isiWOS:000240609500018-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridWang, C=23010721800en_HK
dc.identifier.scopusauthoridQu, P=36838745800en_HK
dc.identifier.scopusauthoridShen, GX=7401967224en_HK

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