AIM: To analyze structure of persistent truncus arteriosus (PTA), hemodynamics, and explore selection of view.

目的：分析永存动脉干(PTA)结构、血流动力学特征，并探讨切面的选择。

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Conclusions Echocardiography was the first choice to diagnose persistent truncus arteriosus in clinical imaging diagnostic methods.

结论超声心动图可作为影像诊断永存动脉干的首选与筛选方法。

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Objective To explore the echocardiographic characteristics of persistent truncus arteriosus and evaluate the value of echocardiography in clinical imaging diagnosis.

目的探讨永存动脉干的超声显像特征，评价超声心动图在永存动脉干影像诊断中的价值。

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