Three steps approach for preoperative evaluation of tetralogy of Fallot patients: role of 128 MDCT

Abstract Background Tetralogy of Fallot is the most common congenital cyanotic heart disease. Advances in surgical repair recently facilitate survival affected patients into adulthood with good quality life. Despite imaging plays crucial role diagnosis TOF patients, no single diagnostic modality suffices for complete evaluation TOF. Thus, different tools should be used alone or combination according to patient’s clinical question. This study aims find out agreement between echocardiography and MDCT prior repair. Results Three-step approach scanning patients. Firstly, classic findings, was comparable overriding aorta ( k = 0.6), VSD 0.8), RVH 0.4), sub valvular pulmonary stenosis 0.6). Echocardiography superior 0.4). supravalvular stenosis. Secondary, relevant McGoon ratio calculated 94.2%, small major APCs 45.5% 28.5% respectively, PDA 35% anomalous coronary artery 5.1%. Thirdly, other TOF-associated anomalies, common: ASD (34.3%) RAA (28.3%), persistent LSVC (10.3%). Uncommon: situs ambiguous (2.5 %), PAPVR (1.2%), IVC anomalies (3.8%). findings anomalies. Conclusion a tool extra cardiac