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. 2019 Mar 29;19(76):24–42. doi: 10.15557/JoU.2019.0004

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© Polish Ultrasound Society

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Fig. 9. — RAA – the ductus arteriosus from the descending aorta to the right pulmonary artery. A. Suprasternal view, frontal view; systole. The descending aorta (Desc) connects to the right pulmonary artery (RPA) via a wide vessel (*) with flow visible during both systole and diastole – a typical feature of the ductus arteriosus. B. The view and legends as in Fig 10 A. Diastole. Flow limited to the DA. C. A high right parasternal view, a section in the sagittal-like plane. Visible elements: the ascending aorta (AoAsc), the aortic arch (TrA), the right common carotid artery (RCCA), the right subclavian artery (RSA), the ductus arteriosus (*) arising from the descending aorta (Desc) and connecting to the right pulmonary artery (RPA)