【摘要】 目的探讨各型先天性主动脉瓣病变在彩色多普勒超声的不同表现。方法通过胸骨旁左心室长轴切面和主动脉根部短轴切面,观察主动脉瓣数目、形态、回声及运动情况;通过彩色多普勒血流显像(CDFI)观察主动脉瓣的狭窄及关闭不全程度。结果主动脉瓣单叶畸型时收缩期如圆顶状突向主动脉腔,舒张期突向左心室流出道;二叶畸型时短轴收缩期呈二"字型,舒张期呈一"字型;三叶畸型时,三个瓣叶均增厚,回声强,运动受限;四叶畸型时,舒张期左心室长轴呈"型,短轴呈十"字型。同时各种主动脉瓣病变均有不同程度的狭窄、关闭不全及明显的左心室肥厚。结论超声显象可准确诊断先天性主动脉瓣病变。更多还原

【Abstract】 Objective To diagnose various congenital aortic valve diseases with ultrasonography.Methods The number,form,echo and situation of motion of aortic valve were viewed by parasternal long axis view of the left ventricle and short axis view of the aortic root.The degree of aortic valve stenosis and regurgitation were also observed by color doppler flow imaging.Results In unilober malformation,aortic valve projected into aortic conduit like done during systole and into left ventricular outflow tract during diastole.In the form of bicuspid malformation,aortic valve appeared the type of "二" by short axis during systole and the type of "一" during diastole.In the form of tricuspid malformation,the three cusps were all thickened and appear strong echo.In the form of quadricuspid deformity, the valve appeared the type of "" with long axis view of the left ventricle,but appeared "十" with short axis.At the same time,various aortic valve diseases were all attendand on a greater or less degree of sfenosis,regurgitation and obvious lefe ventricular hypertrophy.Conclusion Ultrasonography can accurately diagnose congenital aortic valvular diseases.更多还原