Zhi-gang Yang
West China Hospital- Sichuan University, China
Posters & Accepted Abstracts: Pediat Therapeut
Double outlet right ventricle (DORV) is a complex congenital heart disease which is characterized by the two great arteries completely or predominately arise (>50%) from the right ventricle. It often accompanied by a serious of intra- and extra-cardiac malformations. Accurate preoperative evaluation is essential for surgeons. In recent years, dual-source computed tomography (DSCT), with its fast scanning speed, high imaging quality and low radiation dose, has evolved into a reliable tool for pediatric patients with congenital heart diseases. In our study, we enrolled 47 pediatric patients with DORV who received surgical interventions. All surgically confirmed malformations were categorized into the following four groups: intracardiac anomalies, coronary artery anomalies (CAAs), anomalies of great vessels, separate thoracic and abdominal anomalies. We evaluated the diagnostic accuracy between DSCT and transthoracic echocardiography (TTE) when compared with surgical results. According to the data from our study, DSCT was superior to TTE in demonstrating paracardiac anomalies (sensitivity, coronary artery anomalies: 100% vs. 80.00%, anomalies of great vessels: 100% vs. 88.57%, separate thoracic and abdominal anomalies: 100% vs. 76.92%, respectively). As for intracardiac anomalies, our study demonstrated that DSCT might miss some tiny anomalies. Even so, the diagnostic accuracy of DSCT was also satisfactory (sensitivity, 91.30% vs. 100%) in comparison with TTE. The estimated mean effective dose in our study was <1 mSv (0.88�±0.34 mSv). Hence, combined with TTE, DSCT may reduce or even obviate the use of invasive cardiac catheterization, and thus exposing the patients in a much lower radiation dose.
Email: yangzg666@163.com
