简介：~~

简介：Therestenosisaftercoronaryarterybypassgraft(CABG)isattributedtotheformationofintimalhyperplasia(IH)attheanastomosis,whichiscloselyrelatedtohemodynamicdependonthegeometricmodel.Inordertogiveareasonableassessmentofthesurgeryeffectandjudgethelong-termpatencyrate,thehemodynamicofCABGsurgeryprogramiscomparedwiththatofsurgerydesignofthejunctionanglechanged.Basedonin-vivoCTcoronaryangiographydatasets,theindividualgeometricmodelofCABGreconstructedinsteadofidealizedgeometricmodelsareappliedtosimulatetherealphysiologicalbloodflowutilizingpulsatileflowboundarywaveformsinthepresentstudy.Thesimulationresultsshowthatthemaximumwallshearrate(WSS)valueisatthebottomofanastomosis.Moreover,thestagnationzonegrowinggraduallywiththegreaterangledownstreamtheanastomosisispronetoformtheIH,whichisconsistentwithclinicalobservation.Itisprovedthatthesurgerybeingbettersuitedtomaintaingraftpatencyissuccessful.