Objective: To evaluate the accuracy of the diagnosis of persistent truncus arteriosus (PTA) by Doppler echocardiography, analyze the misdiagnosed and improve the echocardiography diagnosis.

• 摘要目的：探讨多普勒超声心动图对永存动脉干及其分型的诊断价值，分析误诊原因，提高其诊断的准确率。