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The standard echocardiographic views used in our study: (a) SSNA view, (b) PSLAX view, and (c) the AC4 view. The significant anatomical parts in these views have been labeled as follows: right pulmonary artery (RPA), supra-aortic vessels, descending aorta (DAo), right/left ventricle (RV/LV), mitral/aortic/tricuspid valve (MV/AoV/TV), right/left atrium (RA/LA), and intra-atrial/ventricular septum (IAS/IVS).
