Importance of CT Angiography in Preoperative Evaluation of Patients With Tetralogy of Fallot; Single Center Experience

The aim of this study is to investigate the diagnostic significance of Computerized Tomography (CT) angiography in the evaluation of coronary and pulmonary artery anomalies and accompanying extracardiac structures in pediatric patients with tetralogy of Fallot. We also aimed to evaluate the surgical benefits of CT angiography performed before operation. The data of patients with operated tetralogy of Fallot and variants were retrospectively reviewed between January 2016- January 2018. Patients without CT angiography examination and cases with missing data were not included in the study. The age, gender, age at diagnosis, echocardiography and CT angiography and operation procedure were evaluated. A total of 32 patients were included in the study. The mean age of the patients was 18±17 (1-84) months. Of the patients, 6 had Tetralogy of Fallot with pulmonary atresia and 1 had tetralogy of Fallot without pulmonary valve. The extracardiac malformations detected by CT anjiography were aortopulmonary collateral artery in 6 patients, retroaortic innominate ven in 2 patients, aberrant right subclavian artery in 1 patient and coronary artery anomaly in 1 patient. CT angiography is important in patients with tetralogy of Fallot showing concomitant pulmonary artery confluence, diameter and aortopulmonary collateral artery. This examination provides significant benefits in terms of surgical choice and approach