C22. Cardiac Morphology in Congenital Heart Disease with 3D Modeling, 3D Printing and Augmented Reality Smartphone Application: a Case Series of Cardiac Computed Tomography Assessment of Right Ventricular Outflow Tract Obstruction with Shunt

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Abstract BACKGROUND Obstruction of the right ventricular outlet may include stenosis of the Right Ventricular Outflow Tract (RVOT) or the presence of atresia in the valve or pulmonary artery. The Cardiac Computed Tomography (CCT) examination for RVOT obstruction with a shunt has several indications, including pulmonary and coronary artery assessment, and lesions accompanying RVOT obstruction with a shunt. CASE DESCRIPTION In this report, we present five cases with RVOT obstruction with shunts in the form of Tetralogy of Fallot (ToF), pulmonary atresia with Ventricle Septal Defect (VSD), and pulmonary stenosis with Double Outlet Right Ventricle (DORV). The first patient with ToF and infective endocarditis. The second patient with atypical ToF, cardiac dextroposition, and suspect Scimitar Syndrome. The third patient with pulmonary atresia, VSD, and post-R-BT shunt. The fourth patient with pulmonary stenosis, DORV, remote VSD, post-BT shunt, and suspect Criss Cross Heart. The fifth patient with pulmonary stenosis, DORV, RA isomerism, malposition of the great artery, bilateral SVC, and dextrocardia. DISCUSSION The CCT assessment can be carried out in a segmental sequential to systematically and comprehensively approach. For complex lesions, CCT provides 3D printing of the heart and may help to understand the cardiac morphology easily. CCT is a recommended examination for RVOT obstruction with shunt, shows a good sensitivity for assessing BT-shunt, and provides good spatial resolution for assessing the pulmonary and coronary arteries. 3D printing and augmented reality can improve practitioners' understanding of RVOT obstruction with shunt, including the accompanying lesions.