Research on Split Augmented Largrangian Shrinkage Algorithm in Magnetic Resonance Imaging Based on Compressed Sensing-中国Betway体育网页登陆

摘要 Thispaperaimstomeettherequirementsofreducingthescanningtimeofmagneticresonanceimaging(MRI),acceleratingMRIandreconstructingahighqualityimagefromlessacquisitiondataasmuchaspossible.MRImethodbasedoncompressedsensing(CS)withmultipleregularizations(tworegularizationsincludingtotalvariation(TV)normandL1normorthreeregularizationsconsistingoftotalvariation,L1normandwavelettreestructure)isproposedinthispaper,whichisimplementedbyapplyingsplitaugmentedlagrangianshrinkagealgorithm(SALSA).TosolvemagneticresonanceimagereconstructionproblemswithlinearcombinationsoftotalvariationandL1norm,weutilizedcompositesplitdenoising(CSD)tosplittheoriginalcomplexproblemintoTVnormandL1normregularizationsubproblemswhichweresimpleandeasytobesolvedrespectivelyinthispaper.Thereconstructedimagewasobtainedfromtheweightedaverageofsolutionsfromtwosubproblemsinaniterativeframework.BecauseeachofthesplittedsubproblemscanberegardedasMRImodelbasedonCSwithsingleregularization,andforsolvingthekindofmodel,splitaugmentedlagrangealgorithmhasadvantageoverexistingfastalgorithmsuchasfastiterativeshrinkagethresholding(FIST)andtwostepiterativeshrinkagethresholding(TwIST)inconvergencespeed.Therefore,weproposedtoadoptSALSAtosolvethesubproblems.Moreover,inordertosolvemagneticresonanceimagereconstructionproblemswithlinearcombinationsoftotalvariation,L1normandwavelettreestructure,wecansplittheoriginalproblemintothreesubproblemsinthesamemanner,whichcanbeprocessedbyexistingiterationscheme.Agreatdealofexperimentalresultsshowthattheproposedmethodscaneffectivelyreconstructtheoriginalimage.ComparedwithexistingalgorithmssuchasTVCMRI,RecPF,CSA,FCSAandWaTMRI,theproposedmethodshavegreatlyimprovedthequalityofthereconstructedimagesandhavebettervisualeffect.

1CHANG Tiantian DAI Meng XU Canhua FU Feng YOU Fusheng DONG Xiuzhen.Primary Research of EIT Inverse Problem Based on CS （Compressed Sensing） Technique.基础数学,2013-01.
2LI De-jian LI Bin ZHOU Zheng ZHAI Shi-jun.Compressed sensing based deconvolution algorithm for time-domain UWB channel modeling.通信与信息系统,2012-01.
3Naif Bawazeer;Hella Vuong;Sophie Riehm;Francis Veillon;Anne Charpiot.Magnetic resonance imaging after cochlear implants.耳鼻咽喉科,2019-01.
4Xin-Yu Du Yong-Jie Li Cheng Luo De-Zhong Yao.Elitist Reconstruction Genetic Algorithm Based on Markov Random Field for Magnetic Resonance Image Segmentation.物理电子学,2012-01.
5徐征;李想;郭盼;吴嘉敏.Equivalent magnetic dipole method used to design gradient coil for unilateral magnetic resonance imaging.物理,2018-05.
6Shasha Li;Cheng Luo;Chengqi He;Qiyong Gong;Dong Zhou.Central swallowing in normal adults using functional magnetic resonance imaging.神经病学与精神病学,2009-04.
7Guo, Biao; Lu, Xiaoying; Chen, Zengping.Techniques for Radar Imaging Based on MUSIC Algorithm.物理电子学,1999-01.
8Chao Li;Yaowen Su;Yizhuo Zhang;Huimin Yang.Root imaging from ground penetrating radar data by CPSO-OMP compressed sensing.林学,2017-01.
9Yibin Xie;Jianing Pang;Qi Yang;Debiao Li.Magnetic Resonance Imaging of Coronary Arteries:Latest Technical Innovations and Clinical Experiences.心血管疾病,2016-03.
10Shi Chen;Qing Zhang;Yucheng Chen.The Role of Clinical Cardiac Magnetic Resonance Imaging in China:Current Status and the Future.心血管疾病,2016-07.

Research on Split Augmented Largrangian Shrinkage Algorithm in Magnetic Resonance Imaging Based on Compressed Sensing

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