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Fig. 2C. —25-year-old woman with native aortic coarctation combined
with inferior arch aneurysm and aberrant right subclavian artery.
Phase-contrast study obtained throughout neck shows retrograde flow in right
vertebral artery, indicating right subclavian steal syndrome. Magnitude image
(C on right), velocity-encoded image (C on left), and resulting
flow velocity graph (D) show opposite flow direction in right vertebral
artery (blue line) compared with left vertebral (white
line), right carotid (green line), and left carotid (red
line) arteries.
