简介：Commonpracticedictatestheperformanceofpercutaneouscoronaryinterventionunderconventionalangiographicguidance.Withstudiessuggestingthehighincidenceofintraobservervariability,especiallyinangiographicborderlinelesions,newmodalitiessuchasintravascularultrasound(IVUS)guidanceduringpercutaneouscoronaryinterventionhavesurfaced.MultiplestudieshaveshownimprovedoutcomeswithIVUSguidance,mainlydrivenbyadecreaseinischemia-driventargetlesionrevascularization.Inthepasttwodecades,amultitudeofstudieshaveinvestigatedtheusesandclinicaloutcomesassociatedwiththistechnology.Inthisreview,wehighlighttheutility,advantages,economicimplications,andclinicaloutcomesofIVUSguidanceoverstandardangiographicguidance,withemphasisondataastheypertaintoIVUS-guidedstentimplantation.

简介：BackgroundUltrasound-guidedtemporarypacemakerimplantationhasbeenprovensafeandefficient.However,fewstudieshavefocusedonelderandcriticalpatients.MethodsTwelveelderandcriticalpatientsunderwenttemporarycardiacpacingthroughthejugularveinorsubclavianvein,withbedsideultrasoundimagestoassisttheplacementofelectrodewithintherightventricle.ResultsUltrasound-guidedtemporarycardiacpacemakerinsertionwassuccessfulinallofthe12patients.Electrodesweresentintotherightventriclecorrectlywiththehelpofultrasoundimaging.Inallcases,temporarypacemakerfunctionedwellwithoutprocedure-relatedcomplications.ConclusionTemporarycardiacpacingguidedbyultrasoundissafeandeffectiveinelderandcriticalpatients,whichisworthofpromoting,especiallyinintensivecareunit.

简介：INTRODUCTIONCurrently,angiographyiswidelyusedforthediagnosisofcoronaryarterydisease,however,itsdiagnosticaccuracyislimitedbecauseitisunabletovisualizethecoronarywall~(1,2).Fortunately,intravascularultrasound(IVUS)andopticalcoherencetomography(OCT)provideuniqueinsightsoncoronarypathology

简介：Acuteaorticsyndromeincludesclassicaorticdissection,aorticintramuralhematoma,andpenetratingatheroscleroticulcer–agroupofconditionsthataredefinedbytheirdynamicevolutionandsimilarclinicalmanifestation.Accuratediagnosisandprompttreatmentareessentialasalltheaforementionedconditionsareasignificantthreattoapatient’slife.However,acuteaorticsyndromeandespeciallyaorticintramuralhematomamaybechallengingdiagnosticproblems.Intravascularultrasoundimagingisadiagnosticmethodthatcanbeusefulformorethoroughevaluationoftheaorticlesionandcanparticularlyaidindiscerningthedifferentformsofacuteaorticsyndrome.Wepresentacaseofapatientwithaorticintramuralhematomathatwasmissedbyconventionalimagingstudiesbutwassuccessfullyvisualizedwithintravascularultrasoundimaging.

简介：BackgroundChronickidneydisease(CKD)patientsareathighriskofatherosclerosis.Structuralandelasticchangesofcarotidarterywallreflecttherangeanddegreeofatherosclerosisinperipheralarteries,whichcanbeacquiredbyultrasoundradiofrequency-datatechniqueautomaticallyandprecisely.MethodsAtotalof66CKDpatientswithnegativeresultsonroutinecarotidarteryultrasoundexaminationwereenrolled,and30healthyphysicalexamineeswereselectedascontrols.Patientsweredividedinto3groupsaccordingtoCKDstage:stage1-2,stage3-4andstage5.Clinicalcharacteristicsandthelaboratoryresultswereacquired.Intima-mediathickness(IMT)andcompliancecoefficient(CC)ofcommoncarotidarteryweremeasuredbyultrasoundradiofrequencydatatechnique(QIMTandQAS).PredictorsofIMTandCCwereanalyzedrespectively.ResultsAmongthe66patients,15wereonstage1-2,15onstage3-4and36onstage5accordingtoeGFR.ThecommoncarotidarteryIMT(CCIMT)ofalltheCKDgroupsexceptpatientsonstage1-2wassignificantlyincreasedwhencomparedwithcontrols.TheCCofcarotidarterysignificantlywasdecreasedineveryCKDgroupcomparedwithcontrols.AgeandCKDstageweresignificantpredictorsofCCIMTandCCinCKDpatients(P<0.05).AgingandadvancedCKDstagewereassociatedwithincreasedCCIMT(OR=4.855and4.969)anddecreasedCC(OR=32.178and14.068).ConclusionsRadiofrequency-datatechniquecandetectthesmallchangesofstructureandelasticityofcarotidarterywallinCKDpatients.CKDpatientshaveincreasedIMTanddecreasedelasticityofcarotidarterycomparedwithhealthysubjects.AgingandadvancedCKDstageareassociatedwithincreasedCCIMTanddecreasedCC.

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.