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Fig. 1 | BMC Pregnancy and Childbirth

Fig. 1

From: Fetal double aortic arch: prenatal sonographic and postnatal computed tomography angiography features, associated abnormalities and clinical outcomes

Fig. 1

Fetal anatomical pathology after termination of pregnancy. a The right and left aortic arches both arise from the ascending aorta. The left aortic arch gives rise to the LCCA and LSA, and the right aortic arch gives rise to the RCCA and RSA. The left ductus arteriosus connects to descending aorta. b After the trachea is cut off, the left and right arches form a complete vascular ring, which is connected to the descending aorta. (AAO: ascending aorta; R: right aortic arch; L: left aortic arch; RCCA: right common carotid artery; RSA: right subclavian artery; LCCA: left common carotid artery; LSA: left subclavian artery; PA: pulmonary artery DA: ductus arteriosus; DAO: descending aorta; T: trachea)

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