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dc.contributor.authorYip, Chun-Yuen_US
dc.contributor.authorFessler, Jeffrey A.en_US
dc.contributor.authorNoll, Douglas C.en_US
dc.date.accessioned2006-12-07T16:52:26Z
dc.date.available2006-12-07T16:52:26Z
dc.date.issued2005-10en_US
dc.identifier.citationYip, Chun-yu; Fessler, Jeffrey A.; Noll, Douglas C. (2005)."Iterative RF pulse design for multidimensional, small-tip-angle selective excitation." Magnetic Resonance in Medicine 54(4): 908-917. <http://hdl.handle.net/2027.42/48766>en_US
dc.identifier.issn0740-3194en_US
dc.identifier.issn1522-2594en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/48766
dc.identifier.urihttp://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=16155881&dopt=citationen_US
dc.description.abstractThe excitation k -space perspective on small-tip-angle selective excitation has facilitated RF pulse designs in a range of MR applications. In this paper, k -space-based design of multidimensional RF pulses is formulated as a quadratic optimization problem, and solved efficiently by the iterative conjugate-gradient (CG) algorithm. Compared to conventional design approaches, such as the conjugate-phase (CP) method, the new design approach is beneficial in several regards. It generally produces more accurate excitation patterns. The improvement is particularly significant when k -space is undersampled, and it can potentially shorten pulse lengths. A prominent improvement in accuracy is also observed when large off-resonance gradients are present. A further boost in excitation accuracy can be accomplished in regions of interest (ROIs) if they are specified together with “don't-care” regions. The density compensation function (DCF) is no longer required. In addition, regularization techniques allow control over integrated and peak pulse power. Magn Reson Med, 2005. © 2005 Wiley-Liss, Inc.en_US
dc.format.extent1789556 bytes
dc.format.extent3118 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypetext/plain
dc.language.isoen_US
dc.publisherWiley Subscription Services, Inc., A Wiley Companyen_US
dc.subject.otherLife and Medical Sciencesen_US
dc.subject.otherImagingen_US
dc.titleIterative RF pulse design for multidimensional, small-tip-angle selective excitationen_US
dc.typeArticleen_US
dc.rights.robotsIndexNoFollowen_US
dc.subject.hlbtoplevelHealth Sciencesen_US
dc.description.peerreviewedPeer Revieweden_US
dc.contributor.affiliationumDepartment of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, Michigan, USA ; Functional MRI Laboratory, University of Michigan, 2360 Bonisteel Ave, Ann Arbor, MI 48109-2108en_US
dc.contributor.affiliationumDepartment of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, Michigan, USA ; Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, USAen_US
dc.contributor.affiliationumDepartment of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, USAen_US
dc.identifier.pmid16155881en_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/48766/1/20631_ftp.pdfen_US
dc.identifier.doihttp://dx.doi.org/10.1002/mrm.20631en_US
dc.identifier.sourceMagnetic Resonance in Medicineen_US
dc.owningcollnameInterdisciplinary and Peer-Reviewed


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