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Conference Paper: Minimizing power of RF pulse by genetic algorithm

TitleMinimizing power of RF pulse by genetic algorithm
Authors
Issue Date2006
PublisherThe International Society for Magnetic Resonance in Medicine (ISMRM)
Citation
The International Society for Magnetic Resonance in Medicine 14th Scientific Meeting & Exhibition (ISMRM2006). Seattle, WA, 6-12 May 2006, p. 2042 How to Cite?
AbstractIn excitation phase of MRI, there is only a very small portion of the RF pulse energy used for rotating the net magnetization, most of them are deposited into the imaging object as heat. So, reducing the RF pulse power can effectively decrease the heat deposited. In this work, genetic algorithm is introduced to minimize the power of RF pulse in the pulse design procedure, while keeping the excited profile almost unchanged. Simulation result showed that the power of RF pulse can be reduced by about 17% using GA minimization, while the excitation profile homogeneity almost has no change.
Persistent Identifierhttp://hdl.handle.net/10722/99655

 

DC FieldValueLanguage
dc.contributor.authorPang, Yen_HK
dc.contributor.authorWang, Cen_HK
dc.contributor.authorShen, GG-
dc.date.accessioned2010-09-25T18:39:04Z-
dc.date.available2010-09-25T18:39:04Z-
dc.date.issued2006en_HK
dc.identifier.citationThe International Society for Magnetic Resonance in Medicine 14th Scientific Meeting & Exhibition (ISMRM2006). Seattle, WA, 6-12 May 2006, p. 2042en_HK
dc.identifier.urihttp://hdl.handle.net/10722/99655-
dc.description.abstractIn excitation phase of MRI, there is only a very small portion of the RF pulse energy used for rotating the net magnetization, most of them are deposited into the imaging object as heat. So, reducing the RF pulse power can effectively decrease the heat deposited. In this work, genetic algorithm is introduced to minimize the power of RF pulse in the pulse design procedure, while keeping the excited profile almost unchanged. Simulation result showed that the power of RF pulse can be reduced by about 17% using GA minimization, while the excitation profile homogeneity almost has no change.-
dc.languageengen_HK
dc.publisherThe International Society for Magnetic Resonance in Medicine (ISMRM)-
dc.relation.ispartofThe International Society for Magnetic Resonance in Medicine Scientific Meeting & Exhibition (ISMRM)en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleMinimizing power of RF pulse by genetic algorithmen_HK
dc.typeConference_Paperen_HK
dc.identifier.emailShen, GG: gxshen@eee.hku.hken_HK
dc.identifier.authorityShen, GG=rp00166en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.hkuros121342en_HK
dc.identifier.spage2042en_HK

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