Kumar Parveen, Bhatia Mona
Department of Radiodiagnosis and Imaging, Fortis Escort Heart Institute, Okhla Road, New Delhi 110025, India.
Radiol Cardiothorac Imaging. 2022 Jun 30;4(3):e210089. doi: 10.1148/ryct.210089. eCollection 2022 Jun.
Conotruncal anomalies, also referred to as outflow tract anomalies, are congenital heart defects that result from abnormal septation of the great vessels' outflow tracts. The major conotruncal anomalies include tetralogy of Fallot, double-outlet right ventricle, transposition of the great arteries, truncus arteriosus, and interrupted aortic arch. Other defects, which are often components of the major anomalies, include pulmonary atresia with ventricular septal defect, pulmonary valve agenesis, aortopulmonary window, and double-outlet left ventricle. CT has emerged as a robust diagnostic tool in preoperative and postoperative assessment of various congenital heart diseases, including conotruncal anomalies. The data provided with multidetector CT imaging are useful for treatment planning and follow-up monitoring after surgery or intervention. Unlike echocardiography and MRI, CT is not limited by a small acoustic window, metallic devices, and need for sedation or anesthesia. Major advances in CT equipment, including dual-source scanners, wide-detector scanners, high-efficiency detectors, higher x-ray tube power, automatic tube current modulation, and advanced three-dimensional postprocessing, provide a low-risk, high-quality alternative to diagnostic cardiac catheterization and MRI. This review explores the various conotruncal anomalies and elucidates the role of CT imaging in their pre- and postoperative assessment. CT, CT Angiography, Stents, Pediatrics © RSNA, 2022.
圆锥干畸形，也称为流出道畸形，是由于大血管流出道的异常分隔导致的先天性心脏缺陷。主要的圆锥干畸形包括法洛四联症、右心室双出口、大动脉转位、永存动脉干和主动脉弓中断。其他缺陷，通常是主要畸形的组成部分，包括室间隔缺损合并肺动脉闭锁、肺动脉瓣发育不全、主肺动脉窗和左心室双出口。CT已成为各种先天性心脏病（包括圆锥干畸形）术前和术后评估的强大诊断工具。多排CT成像提供的数据对于手术或介入后的治疗规划和随访监测很有用。与超声心动图和MRI不同，CT不受小声学窗口、金属装置以及镇静或麻醉需求的限制。CT设备的重大进展，包括双源扫描仪、宽探测器扫描仪、高效探测器、更高的X射线管功率、自动管电流调制和先进的三维后处理，为诊断性心导管检查和MRI提供了一种低风险、高质量的替代方案。本综述探讨了各种圆锥干畸形，并阐明了CT成像在其术前和术后评估中的作用。CT、CT血管造影、支架、儿科学 © RSNA，2022年。
