目的 探讨多层螺旋CT(Multislice Spiral Computed Tomography， MSCT)对小儿复杂先天性心脏病的诊断价 值。方法 选取2014年到2015年在我院行 手术确诊的小儿复杂先天性心脏病患者 27例，所有患者术前1个月均经多层螺旋 CT和心脏超声(Ultrasound,US)检查， 比较两种检查方法对患者心脏畸形确诊 率的差异。结果 27例患者共有心脏部 分畸形41处，MSCT的确诊率为(39处， 95.12%)与US确诊率(40处，97.56%)的差 异无统计学意义(χ2 =0.346,P=0.556)； 患者共有大血管部分畸形35处，MSCT 确诊率(34处，97.14%)高于US确诊率 (27处，77.14%)，且差异具有统计学 意义(χ2 =4.590,P=0.032)；患者共 有心脏和大血管连接部分畸形35处， MSCT确诊率(34处，97.14%)高于US确 诊率(25处，71.42%)，且差异具有统 计学意义(χ2 =8.737,P=0.003)；所有 患者共有心脏畸形111处，MSCT确诊 率(107处，96.40%)高于US确诊率(92 处，82.88%)，且差异具有统计学意义 (χ2 =10.913,P=0.001)。结论 多层螺旋 CT对小儿复杂先天性心脏病心脏畸形的 诊断准确率高于心脏超声检查。

Objective To explore the diagnosis value of MSCT for complex congenital heart disease in children. Methods Selected from 2014 to 2015 in our hospital surgery diagnosis of children with complex congenital heart disease in 27 cases, All patients were examined by multi-slice spiral CT and ultrasound (ultrasound) in 1 month before surgery. The difference of the two patients was confirmed by the two methods. Results A total of 27 patients with heart malformation in 41, the diagnostic rate of MSCT for (39, 95.12%) and US (40, diagnosis rate 97.56%) there was no significant difference (χ2 =0.346, P=0.556). There are a large part of patients with vascular malformation in 35, the diagnosis rate of MSCT (34, 97.14%) higher than the diagnosis rate of US (27, 77.14%), and the difference was statistically significant (χ2 =4.590, P=0.032). The total number of cardiac and vascular connections was 35, and the diagnostic rate of MSCT (34, 97.14%) was higher than that of US (25, 71.42%), and the difference was statistically significant (χ2 =8.737, P=0.003); All patients were cardiac malformation in 111, the diagnosis rate of MSCT (107, 96.40%) higher than the diagnosis rate of US (92, 82.88%), and the difference was statistically significant (χ2 =10.913, P=0.001). Conclusion The diagnostic accuracy of multi-slice spiral CT in children with complex congenital heart disease is higher than that of echocardiography.