血管内超基础知识课件

血管内超声基础知识钱杰南方会2019血管内超声基础知识1血管内超声基础知血管内超声基础血管内超声和冠脉造影的关系主要适应症四、什么是VH南方会2019血管内超声基础知2Therearetwotypesofimagingsystems:Mechanical(rotatingtransducer)andElectronicArray南方会2019Therearetwotypesofimaging3Highfrequencysoundwavesechooffvesselwallsandaresentbackosystemsystemelectronicsprocessthesignal南方会2019Highfrequencysound4Intimaldisease(plaque)isdenseandwillappearwhiteMediaismadeofhomogeneoussmoothmusclecellsanddoesnotreflectultrasound(appearsdark)Adventitiahassheets'ofcollagenthatreflectalotofultrasound(appearswhite)南方会2019Intimaldisease(plaque)5NormalDiseased南方会2019Normal6CalciumBrightechoes(brighterthantheadventitia)Obstructsthepenetrationofultrasound(acousticshadowing)onlytheleadingedgeisdetectedandthicknesscannotbedeterminedResultsinreverberationstheoscillationofUtrasoundbetweentransducerandcalciuncausingrepeatingarcs南方会2019Calcium7CalciumisquantifiedbyDeepmeasuringthe“arctencompassesCalciumisclassifiedbyitslocationwithintheplaqueSuperficialcalciumisclosertothelumenthantotheadventitiaDeepcalciumisclosertotheadventitiathantothelumenSuperficial南方会2019Calciumisquantifiedby8FibroticPlaqueAsbrightorbrighterthantheadventitia(hyperechoicMajorityofatheroscleroticlesionsarefibroticVerydense,fibrousplaquesmaycausesomuchacoustishadowingthattheycouldbemisclassifiedascalcified南方会2019FibroticPlaque9SoftPlaqueNotasbrightastheadventitia(hypoechoicSoftreferstothelowechogenicity,generallyduetohighlipidcontentinamostlycellularlesionReducedechodensitymayalsobeduetonecroticzonewithinplaqueintramuralhemorrhagethrombi南方会2019SoftPlaque10血管内超基础知识课件11血管内超基础知识课件12血管内超基础知识课件13血管内超基础知识课件14血管内超基础知识课件15血管内超基础知识课件16血管内超基础知识课件17血管内超基础知识课件18血管内超基础知识课件19血管内超基础知识课件20血管内超基础知识课件21血管内超基础知识课件22血管内超基础知识课件23血管内超基础知识课件24血管内超基础知识课件25血管内超基础知识课件26血管内超基础知识课件27血管内超基础知识课件28血管内超基础知识课件29血管内超基础知识课件30血管内超基础知识课件31血管内超基础知识课件32血管内超基础知识课件33血管内超基础知识课件34血管内超基础知识课件35血管内超基础知识课件36血管内超基础知识课件37血管内超基础知识课件38血管内超基础知识课件39血管内超基础知识课件40血管内超基础知识课件41血管内超基础知识课件42血管内超基础知识课件43血管内超基础知识课件44血管内超基础知识课件45血管内超基础知识课件46血管内超基础知识课件47血管内超基础知识课件48血管内超基础知识课件49血管内超声基础知识钱杰南方会2019血管内超声基础知识50血管内超声基础知血管内超声基础血管内超声和冠脉造影的关系主要适应症四、什么是VH南方会2019血管内超声基础知51Therearetwotypesofimagingsystems:Mechanical(rotatingtransducer)andElectronicArray南方会2019Therearetwotypesofimaging52Highfrequencysoundwavesechooffvesselwallsandaresentbackosystemsystemelectronicsprocessthesignal南方会2019Highfrequencysound53Intimaldisease(plaque)isdenseandwillappearwhiteMediaismadeofhomogeneoussmoothmusclecellsanddoesnotreflectultrasound(appearsdark)Adventitiahassheets'ofcollagenthatreflectalotofultrasound(appearswhite)南方会2019Intimaldisease(plaque)54NormalDiseased南方会2019Normal55CalciumBrightechoes(brighterthantheadventitia)Obstructsthepenetrationofultrasound(acousticshadowing)onlytheleadingedgeisdetectedandthicknesscannotbedeterminedResultsinreverberationstheoscillationofUtrasoundbetweentransducerandcalciuncausingrepeatingarcs南方会2019Calcium56CalciumisquantifiedbyDeepmeasuringthe“arctencompassesCalciumisclassifiedbyitslocationwithintheplaqueSuperficialcalciumisclosertothelumenthantotheadventitiaDeepcalciumisclosertotheadventitiathantothelumenSuperficial南方会2019Calciumisquantifiedby57FibroticPlaqueAsbrightorbrighterthantheadventitia(hyperechoicMajorityofatheroscleroticlesionsarefibroticVerydense,fibrousplaquesmaycausesomuchacoustishadowingthattheycouldbemisclassifiedascalcified南方会2019FibroticPlaque58SoftPlaqueNotasbrightastheadventitia(hypoechoicSoftreferstothelowechogenicity,generallyduetohighlipidcontentinamostlycellularlesionReducedechodensitymayalsobeduetonecroticzonewithinplaqueintramuralhemorrhagethrombi南方会2019SoftPlaque59血管内超基础知识课件60血管内超基础知识课件61血管内超基础知识课件62血管内超基础知识课件63血管内超基础知识课件64血管内超基础知识课件65血管内超基础知识课件66血管内超基础知识课件67血管内超基础知识课件68血管内超基础知识课件69血管内超基础知识课件70血管内超基础知识课件71血管内超基础知识课件72血管内超基础知识课件73血管内超基础知识课件74血管内超基础知识课件75血管内超基础知识课件76血管内超基础知识课件77血管内超基础知识课件78血管内超基础知识课件79血管内超基础知识课件80血管内超基础知识课件81血管内