File Download

There are no files associated with this item.

Supplementary

Conference Paper: Minimize the Power of Variable-Rate Gradient Pulse Using Conjugated Gradient Algorithm

TitleMinimize the Power of Variable-Rate Gradient Pulse Using Conjugated Gradient Algorithm
Authors
Pang, YLiu, GZWei, JShen, GG
Issue Date2007
PublisherInternational Society for Magnetic Resonance in Medicine
Citation
Joint Annual Meeting ISMRM-ESMRMB SMRT16th Annual Meeting, Berlin, Germany, 19-25 May 2007, Abstract no. 3304 How to Cite?
AbstractWhen RF pulse is applied most RF power is deposited into the imaging object. Therefore, Variable-Rate Gradient (VRG) pulse has been widely used in excitation to reduce the RF power. However, it is important to determine the variable gradient shape. In this work, Conjugated Gradient (CG) accompanied by piecewise cubic spline interpolation is applied to optimize the gradient of the VRG pulse in order to minimize the RF power without changing of excitation profile. Simulation results show that the RF power is reduced by 28% in excitation pulse.
Persistent Identifierhttp://hdl.handle.net/10722/99399

 

DC FieldValueLanguage
dc.contributor.authorPang, Yen_HK
dc.contributor.authorLiu, GZen_HK
dc.contributor.authorWei, Jen_HK
dc.contributor.authorShen, GGen_HK
dc.date.accessioned2010-09-25T18:28:27Z-
dc.date.available2010-09-25T18:28:27Z-
dc.date.issued2007en_HK
dc.identifier.citationJoint Annual Meeting ISMRM-ESMRMB SMRT16th Annual Meeting, Berlin, Germany, 19-25 May 2007, Abstract no. 3304en_HK
dc.identifier.urihttp://hdl.handle.net/10722/99399-
dc.description.abstractWhen RF pulse is applied most RF power is deposited into the imaging object. Therefore, Variable-Rate Gradient (VRG) pulse has been widely used in excitation to reduce the RF power. However, it is important to determine the variable gradient shape. In this work, Conjugated Gradient (CG) accompanied by piecewise cubic spline interpolation is applied to optimize the gradient of the VRG pulse in order to minimize the RF power without changing of excitation profile. Simulation results show that the RF power is reduced by 28% in excitation pulse.-
dc.languageengen_HK
dc.publisherInternational Society for Magnetic Resonance in Medicine-
dc.relation.ispartofJoint Annual Meeting ISMRM-ESMRMB SMRTen_HK
dc.titleMinimize the Power of Variable-Rate Gradient Pulse Using Conjugated Gradient Algorithmen_HK
dc.typeConference_Paperen_HK
dc.identifier.emailShen, GG: gxshen@eee.hku.hken_HK
dc.identifier.authorityShen, GG=rp00166en_HK
dc.identifier.hkuros132689en_HK
dc.identifier.spage3304en_HK

Export via OAI-PMH Interface in XML Formats

OR

Export to Other Non-XML Formats