【摘要】 目的　与其他影像方法比较 ,探讨MRI诊断共同动脉干的价值 ,提高无创诊断水平。方法　共同动脉干 12例 ,根据肺动脉由动脉干分出的部位分型 ;12例均行X线平片、超声心动图(UCG)和MR检查 ,并均经心血管造影 (CAG)证实 ,6例经手术进一步证实。结果　Ⅰ型 4例 ,Ⅲ型2例 ,Ⅳ型 6例。X线平片考虑 5例共同动脉干可能 ,UCG正确诊断Ⅰ型 4例 ,Ⅲ型 2例未能探及肺动脉起自动脉干的部位 ,Ⅳ型中正确诊断 3例。MRI正确诊断 10例 ,只有Ⅳ型 2例误诊 ,MRI可显示共同动脉干心内结构和肺动脉起源于动脉干的部位。结论　MRI在共同动脉干诊断中有一定应用价值 ,可弥补UCG在共同动脉干诊断中的不足 ,二者结合使用可提高临床对共同动脉干的无创诊断水平更多还原

【Abstract】 Objective To evaluate the MRI diagnostic value for truncus arteriosus, and to improve the non invasive diagnostic level. Methods Twelve cases of truncus arteriosus were examined by X ray, Ultracardiography, and MRI, and all were confirmed by cardioangiography (CAG). Among them, 6 cases were confirmed by operation. Results Truncus arteriosus was classified and diagnosed accurately by MRI in 10 cases, and MR could show the intracardic structure and the site at which the pulmonary artery originated from truncus arteriosus. Conclusion MRI had the definite applied value, and could remedy the shortcoming of echocardiography on the classification and diagnosis of truncus arteriosus. The combined usage of MRI and echocardiography could improve the clinical non invasive diagnostic level of truncus arteriosus.更多还原