简介：BackgroundTheearlyendothelialdysfunctionofcarotidarteryinpatientswithtype2diabetesmellitus(T2DM)hasbeenrecognized.However,thefeasibilityandsignificanceofcarotidarteryendothelialdysfunctiondetectedbyultrasoundradio-frequencytechnologyhasbeenseldomstudied.MethodsThe2Dultrasoundimagesofthebilateralcommoncarotidarteriesfrom112casesofT2DMpatientsand50casesofnormalsubjectsinourhospitalwerecollectedtomeasureintima-mediathicknessmeans(IMTm),end-systolicinnerdiameter(Ds),end-diastolicinnerdiameter(Dd),resistanceindex(RI),pulseindex(PI),andthesystole/diastoleratio(S/D).Wealsoobservedthevariationoftheintima-mediathickness(IMT)aswellastheelasticityindexesofthecommoncarotidartery,suchasthecompliancecoefficient(CC),elasticitycoefficient(β),pulsewavevelocity(PWV)andaugmentationindex(AIx)throughinstrumentswithbuilt-inultrasoundradio-frequencytechniques,includingquantitativeintima-mediathickness(QIMT)andquantitativeanalysisofarterialstiffness(QAS).Thedifferencesoftheabove-mentionedparametersbetweenthetwogroupswereanalyzed.ResultsTherewerenostatisticallysignificantdifferencesinIMTm,Ds,Dd,RI,PIandS/DraitoofthecommoncarotidarteriesbetweengroupT2DMandthenormalgroup(P>0.01).Theβ,PWVandAIxingroupT2DMwereremarkablyhigherthanthoseinthecontrolgroup,withCCvaluebeingsignificantlylowerthanthelater(P<0.01or0.05).ConclusionUltrasoundradio-frequencytechniqueoffersearlierandmoreeffectiveevaluationofcarotidarteryendothelialdysfunctioninT2DMpatientswhencomparedwithconventional2Dultrasound,establishingimagingfoundationfortheearlypreventionandtreatmentofcardio-cerebrovascularcomplicationsinT2DMpatients.