Figure 9.

3D-reconstructed magnetic resonance angiography in a 38-year-old woman showing a rare branching pattern of the aortic arch (view from posterior). The right common carotid artery (rc) gives rise to the right vertebral artery (rv); the left vertebral artery (lv) arises directly from the aortic arch between the left common carotid artery (lc) and the left subclavian artery (ls); the right subclavian artery (rs) originates as the last branch and takes a retroesophageal course (“arteria lusoria”).