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为探讨临床应用彩色多普勒血流会聚法定量评价二尖瓣返流，本文采用心脏造影－热稀释方法作对照，研究２２例二尖瓣返流患者，发现会聚法测得的每搏返流量、返流分数与心导管法测值总体相关良好（ｒ分别为０．９３～０．９４，０．８１～０．８７）。会聚方法（Ⅰ）计算的每搏返流量值与心导管法测值无显著差异，而会聚方法（Ⅱ）的每搏返流量测值出现低估。会聚方法（Ⅰ）能直接较准确计算每搏返流量，但不能直接提供返流分数，该方法适合应用于临床。
In order to investigate the clinical application of color Doppler flow convergence method for the quantitative evaluation of mitral regurgitation, this paper uses cardiac contrast-thermal dilution method as a control, study of 22 patients with mitral regurgitation and found that stroke-stroke Flow and regurgitation scores were generally well correlated with cardiac catheterization (r = 0.93-0.94, 0.81-0.87, respectively). Convergence method (I) calculated pacing stroke volume and cardiac catheterization no significant difference, while the convergence method (II) stroke backward flow measurements underestimated. Convergence method (Ⅰ) can directly and accurately calculate stroke regurgitation, but can not directly provide reflux fraction, the method is suitable for clinical application.