Methods Twelve patients with persistent truncus arteriosus were examined by echocardiography and the results were compared with those by MRI in 8 patients and by angiography in 5 patients.

• 方法对12例永存动脉干患者进行了超声心动图检查,并与其中8例磁共振（MRI）检查、5例心血管造影结果相对照。