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在３８例心脏病患者中进行了超声心动图和心导管的同步检查，应用新型的声学定量技术和自制的压力—容量环（Ｐ－ＶＬ）软件程序同步输入左室容量和压力曲线并自动描绘左室Ｐ－ＶＬ。结果表明，Ｐ－ＶＬ可直观地显示不同类型心脏病患者的左室功能状态，所得定量数据可全面反映左室的收缩和舒张功能，这一方法简便准确、重复性好，明显优于以往的手工描绘，为临床应用Ｐ－ＶＬ研究左室功能开辟了新的途径。
Echocardiography and cardiac catheterization were performed in 38 patients with heart disease. Left ventricular volume and pressure curves were simultaneously entered using a novel acoustic quantification technique and a home-made stress-volume ring (P-VL) software program to automatically plot Left ventricular P-VL. The results show that P-VL can visually show left ventricular function in patients with different types of heart disease, the quantitative data obtained can fully reflect the left ventricular systolic and diastolic function, this method is simple and accurate, good repeatability, significantly better than the previous Hand-painted, for the clinical application of P-VL study of left ventricular function has opened up a new way.