目的 探讨分析经胸超声心动 图(TTE)与双源螺旋CT(DSCT)在儿童先 天性心脏病术前诊断中的应用价值。方 法 收集2013年7月-2016年7月我院收治 的70例先天性心脏病(CHD)患儿病历资料 进行回顾性分析，术前均行TTE和DSCT检 查，对照手术病理诊断结果，比较两种 诊断方法灵敏度和准确度。结果 70例患 儿共176处畸形，TTE检出156例，总体检 出率为88.64%，DSCT检出146例，总体检 出率为82.95%，差异无统计学意义(P＞ 0.05)；心脏部分畸形共93处，TTE诊断 灵敏度(96.77%)和准确度(98.30%)显著 高于DSCT诊断灵敏度(68.82%)和准确度 (83.52%)(P＜0.05)；心脏-大血管连接部 分畸形30处，TTE和DSCT诊断灵敏度和准 确度均为100.00%(P＞0.05)；大血管部分 畸形53处，TTE诊断灵敏度(66.04%)和准 确度(89.20%)显著低于DSCT诊断灵敏度 (98.11%)和准确度(99.43%)(P＜0.05)。 结论 TTE和DSCT诊断方法各有优劣，TTE 对心脏部分畸形检测灵敏度和准确度较 高，DSCT对大血管部分畸形检测灵敏度和 准确度较高。

Objective To investigate and analyze the application value of transthoracic echocardiography (TTE) and dual-source computed tomography (DSCT) in the preoperative diagnosis of children with congenital heart disease (CHD). Methods The clinical data of 70 cases of children with congenital heart disease (CHD) treated in our hospital from July 2013 to July 2016 were retrospectively analyzed. All subjects were examined with TTE and DSCT before operation. Referred to the results of pathological diagnosis, the sensitivity and accuracy were compared between the two diagnostic methods. Results Among 70 cases of children, there were a total of 176 malformations, and 156 cases was detected by TTE (88.64%) and 146 cases was detected by DSCT (82.95%) (P>0.05). There were a total of 93 cases of cardiac malformations, and the diagnostic sensitivity and accuracy of TTE were significantly higher than those of DSCT [(96.77% and 98.30%) vs. 968.82% and 83.52%)] (P<0.05). There were a total of 30 heart-large blood vessels connecting part of malformations, and diagnostic sensitivity and accuracy of both TTE and DSCT were 100.00% (P>0.05). There were 53 large blood vessel malformations, and the diagnostic sensitivity and accuracy of TTE were significantly lower than those of DSCT [(66.04% and 89.20%) vs. (98.11% and 99.43%)] (P<0.05). Conclusion TTE and DSCT have their own advantages and disadvantages. The sensitivity and accuracy of TTE are high in detecting partial cardiac malformations while the sensitivity and accuracy of DSCT are high in detecting partial malformation of large vessels.