简介：Thesphericalheadmodelhasbeenwidelyusedinmagnetoencephalography(MEG)asasimpleforwardmodelforcalculatingtheexternalmagneticfieldproducingbyneuralcurrentsinahumanbrain.Butthismodelmayleadtoaninaccurateresult,evenifthecomputationspeedisfast.Formoreprecisecomputation,realisticbrain-shapedheadmodelisusedwiththeboundaryelementmethod(BME),butatgreatlyincreasedcomputationalcost.WhensolvingMEGinverseproblembyusingoptimizationmethods,theforwardproblemmustoftenbesolvedforthousandsofpossiblesourceconfigurations.Soifthebrain-shapedheadmodelisusedinalliterativestepsofoptimization,itmaybecomputationallyinfeasibleforpracticalapplication.Inthispaper,wepresentamethodaboutusingcompoundheadmodelinMEGinversesolution.Inthismethod,firstsphericalheadmodelisusedforaroughestimation,thenbrain-shapedheadmodelisadoptedformoreprecisesolution.Numericalsimulationindicatesthatundertheconditionofsameaccuracy,thecomputationspeedforthepresentmethodisaboutthreetimesfasterthanamethodusingthebrain-shapedheadmodelatalliterations.

简介：Developingtheradiographicimagesfromtwotothree-dimensional,finiteelementanalysis(FEA)technologycansetupthemodel,predictingdiagnosis,treatmentdesign,aswellassurgicalplan.FEAprovidesanaccuratethree-dimensionalfiniteelementbiomechanicalstudyinosteonecrosisoffemoralhead(ONFH).Thepapersinthelatest5yearsrelatedtofemoralheadosteonecrosisandfiniteelementanalysisapplicationareconcentratedon.Wesummarizethelatestresearchprogressandproblems,includingtheappliedresearchcarriedoutinthefemoralheadosteonecrosisclinicalcases,innovationalskills,soastopointoutthedirectionoffutureresearchinFEA.

简介：ＩＮＴＲＯＤＵＣＴＩＯＮＭａｇｎｅｔｉｃｓｔｉｍｕｌａｔｉｏｎｉｓｔｈｅｐｒｏｃｅｓｓｏｆｓｔｉｍｕｌａｔｉｎｇｅｘｃｉｔａｂｌｅｔｉｓｓｕｅｂｙａｔｉｍｅ－ｖａｒｙｉｎｇ，ｉｎｔｅｎｓｅｍａｇｎｅｔｉｃｆｉｅｌｄｗｈｉｃｈｉｎｄｕｃｅｓａｎｅｌｅｃ...

简介：ＴＨＥＥＦＦＥＣＴＯＦＯＸＹＧＥＮＡＰＰＬＩＥＤＴＨＲＯＵＧＨＤＲＩＤＳＨＩＰＣＯＮＳＴＡＮＴＨＥＡＤＶＥＳＳＥＬＴＯＤＬＡＬＹＳＡＴＥＯＮＤＩＡＬＹＳＩＳＨＹＰＯＸＥＭＩＡＺｈｅｎｇｕｏＭｉ，ＹｕｓｈｅｎｇＢａｏ，ＣｈｕｎＬｉｕ，ＸｉＣａｏ，Ｊｉａ...