Figure Legends
Figure 1. 1) d-TGA: aorta is seen arising anterior to the pulmonary artery with a left aortic arch; first branch of the aortic arch is the right common carotid artery; second branch is the left common carotid artery; third branch is the left subclavian artery,2) AORSA: right subclavian artery arises from the proximal RPA and has a superior and leftward course with close proximity to the distal ascending aorta before finally coursing rightward, 3) large left sided PDA.
(Ao = aorta, AORSA = anomalous origin of the right subclavian artery, d-TGA = d-transposition of the great arteries, LPA = left pulmonary artery, PA = pulmonary artery, PDA = patent ductus arteriosus, RPA = right pulmonary artery)
Figure 2. The following supplementary material is available online - Movie Clip. Transthoracic echocardiogram with modified imaging plane with color comparison demonstrating the origin and course of the AORSA.
(AORSA = anomalous origin of the right subclavian artery)
Codec used: mpeg4
Figure 3. Two-dimensional (2D) TTE suprasternal notch oblique axial image with color comparison. This image is obtained by an inferiorly directed angulation of the transducer from a standard straight axial plane such that the ascending aorta is seen in a cross-section and the LPA and PDA are seen in a long axis (oblique coronal plane). This enables us to visualize the distal MPA and the proximal RPA, which is most frequently the region of the AORSA from the PA. AORSA is visualized just rightward to the PDA connection at and around the junction of RPA and MPA (red arrowhead).
(AORSA = anomalous origin of the right subclavian artery, LPA = left pulmonary artery, MPA = main pulmonary artery, PA = pulmonary artery, PDA = patent ductus arteriosus, RPA = right pulmonary artery)
Figure 4. Two-dimensional (2D) TTE high right parasternal oblique sagittal image. This image is obtained by rotating the transducer perpendicular to the initial axial plane. This enables us to visualize the distal MPA, LPA and the origin of AORSA in a long axis plane and just rightward of the ascending aorta. Ascending aorta is seen superiorly and separate from the RSCA in a long axis plane.
(AORSA = anomalous origin of the right subclavian artery, LPA = left pulmonary artery, MPA = main pulmonary artery, RSCA = right subclavian artery)