目的 探讨多层螺旋CT血管成 像在双主动脉弓畸形中的诊断价值。方 法 回顾性分析2012年6月至2015年6月于 我院行多层螺旋CT血管成像和超声诊断 共120例患者的临床资料，记录患儿的主 动脉弓畸形发生情况以及对多层螺旋CT 血管成像诊断主动脉弓畸形的结果进行 分析。结果 多层螺旋CT血管成像结果 显示55例行多层螺旋CT血管成像的患儿 中16例患儿的降主动脉横断面位置明显 右移，13例患儿可见升主动脉分叉，7例 患儿合并房间隔缺损，4例合并肺动脉瓣 狭窄。多层螺旋CT血管成像的阳性诊断 率72.7%，明显高于超声诊断的阳性诊断 率，差异有统计学意义(P<0.05)。结论 多层螺旋CT血管成像在双主动脉弓畸形 的诊断阳性率明显高于超声检查，在双 主动脉弓畸形的诊断中有应用价值。

Objective To explore the value of multi-slice spiral CT angiography in the diagnosis of double aortic arch deformity. Methods A retrospective analysis of clinical data of 120 patients receiving multi-slice spiral CT angiograph and echocardiography from June 2012 to June 2015 in our hospital was conducted, record the occurrence of double aortic arch and analyze the result. Results The imaging results showed that the location of cross section of descending aorta in 16 cases of patients was right-shifted, the ascending aorta in 13 cases of patients were bifurcated, 7 cases of patients were with atrial septal defect and 4 cases of patients were with pulmonary valve stenosis. The positive diagnostic rate of multi-slice spiral CT angiography was 72.7%, which was significantly higher than that of echocardiography(P<0.05). Conclusion The rate of multi-slice spiral CT angiography in the diagnosis of double aortic arch was significantly higher than that of the echocardiography, it has application value in the diagnosis of double aortic arch deformity.