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ID:62262751
大小:1.84 MB
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时间:2021-04-24
《最新二维超声心动图常用切面及选择教学讲义ppt.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、二维超声心动图常用切面及选择胸骨旁左室长轴切面(3)正常值:①主动脉内径:胸旁左室长轴切面,收缩末期径,环部前后径为1.6-2.6cm,窦部为2.4-3.9cm,主动脉窦上(嵴部)为2.1-3.4cm,升主动脉为2.2-3.4cm,主动脉弓径为2.2-2.7cm。②左房内径:前后径(收缩末期径、主动脉窦后方垂直距离)为2.4-3.3cm。③右室内径:前后径(舒张末期径,腱索水平测)为2.0cm以下。④左室内径:前后径(腱索水平):舒张末期为3.7-5.2cm;收缩末期为2.3-3.6cm。⑤室间隔厚度(舒张末期,腱索水平测):(9.4士0.9)mm。⑥左室后壁厚度(舒张末期,
2、腱索水平测):(9.4士0.8)mm。胸骨旁左室长轴切面Schematicdiagramoftheparasternallong-axisviewindiastoleshowingtheaorticroot(Ao),sinotubularjunction(STJ),closedrightcoronaryandnoncoronarycuspsoftheaorticvalve(RCCandNCC),theopenanteriorandposteriormitralvalveleaflets(AMVLandPMVL),andtheleftventricularseptumandposter
3、iorwall.Themedialpapillarymusclehasbeenshownforreference,althoughslightmedialangulationisneededtovisualizethistructureinthelong-axisview.Therightventricularoutflowtract(RVOT)isanterior,whilethecoronarysinus(CS)intheatrioventriculargrooveandthedescendingaorta(DA)areseenposteriorly.Therightpulmon
4、aryartery(RPA)liesposteriortotheascendingaorta.Thepositionofthepericardiumisindicatedbythethinline.Normalparasternallong-axis2Dechoimagesatend-diastole(above)andend-systole(below).胸骨旁主动脉根部短轴切面(3)正常测值:1)右室流出道径(自室上嵴至流出道前壁垂直距离);舒张末期为1.9-2.5cm。2)主肺动脉径(胸旁主动脉根部短轴切面,瓣上1cm处):舒张末期为1.5-2.5cm。3)肺动脉瓣环径为1.1
5、-2.2cm,右肺动脉径0.8-1.6cm,左肺动脉径l.0-1.4cm。胸骨旁主动脉根部短轴切面Schematicdiagramofaparasternalshort-axisviewattheaorticvalvelevelshowingtherelationshipbetweenthethreecuspsoftheaorticvalve--rightcoronarycusp(RCC),noncoronarycusp(NCC),leftcoronarycusp(LCC)--andtheleftatrium(LA),rightatrium(RA),rightventricularo
6、utflowtract(RVOT),andthepulmonaryartery(PA)withright(RPA)andleft(LPA)branches.Thepositionsoftherightcoronaryartery(RCA),leftmaincoronaryartery(LMCA),pulmonicvalve,andtricuspidvalveareshown.Two-dimensionalechocardiographicimagesattheaorticvalvelevelinsystole(above)anddiastole(below).Notethethree
7、openleafletsoftheaorticvalveinsystoleandthenormalperpendicularrelationshipofaorticandpulmonicvalves5.胸骨旁腱索水平短轴切面1)正常结构的超声心动图表现:图右侧依次显示左室前壁、侧壁、后壁,中部为室间隔。右前方为右室前壁、右室腔及右室后壁。2)此切面选用范围:①测量左室腔径(前后及左右径),评价左室大小,观察左室壁厚度及室腔形态(正常左室腔呈圆形),腔内显示
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