以立体角代替平面角彩色多普勒血流会聚法评估三尖瓣返流程度

目的　探讨彩色多普勒血流会聚法在评估三尖瓣返流程度中的应用价值。方法　应用不同的血流会聚方程对３２例三尖瓣返流患者的返流程度进行测量， 并与传统法所测指标进行比较。结果　应用立体角会聚方程计算的返流率（Ｆ２）与传统方法测得的返流束指标ＳＲ／ＳＲＡ、ＶＰ 以及二维多普勒方法计算的每搏返流量Ｑ之间的相关关系（ｒ分别为０．４８， ０．４６， ０．９８）优于应用平面角会聚方程计算的返流率（Ｆ１）， 与上述指标之间的相关关系（ｒ分别为０．４６， ０．４４， ０．９２）。而且ＳＶ１明显低估返流程度，ＳＶ２更接近于实际值。结论　应用立体角会聚方程代替平面角会聚方程能更为准确地评估三尖瓣返流程度

Cubic angle instead of plane angle,evaluation the tricuspid regurgitation by color Doppler flow convergence method

Objective To probe the practical value of color Doppler flow convergence method in assessing the tricuspid regurgition.Methods The regurgitant severity of 32 patients with tricuspid regurgitation was calculated by cubic angle and plane angle flow convergence equations,and was compared with the indexes obtained by the traditional method.Results The correlation between the tricuspid regurgitant rate(F2)calculated by cubic angle flow convergence equation and the traditional regurgitant jet indexes SR/SRA、VP,the regurgitant volume(Q)obtained by spectral Doppler method(r=0.48,0.46,0.98,respectively)was superior to that between the tricuspid regurgitant rate(F1)measured by plane angle flow convergence equation and SR/SRA、VP、Q(r=0.46,0.44,0.92,respectively),and SV1 underestimated the regurgitant severity apparently,SV2 was more close to the actual regurgitant volume.Conclusions The study concluded that cubic angle flow convergence equation,instead of plane angle flow convergence equation could evaluate the tricuspid regurgitation more accurately.