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FIG 2. A 65-year-old woman with headache, blurry vision, and arm weakness.
A, CE MRA MIP image (3D FLASH, TR/TE, 4.36/1.64; flip angle 25°; bandwith, 432 Hz; matrix 136 x 512; field of view, 165 x 330 mm; slab thickness, 70 mm; partitions, 80; and voxel size, 1.33 x 0.64 x 1.15 mm3) of the vertebrobasilar system demonstrates severe stenosis at the origin of right vertebral artery (large arrow). There is a short segmental occlusion of the distal left vertebral artery (small arrow).
B, Selective DSA of right subclavian confirms severe stenosis at the right vertebral origin (arrow).
C, Selective DSA of left vertebral artery confirms the distal occlusion (arrow).
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