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FIG 2. Case 2.
A, Oblique view of the right vertebral artery shows a relatively long segment of tight stenosis from the end of which arises the right PICA (arrow). A second area of atherosclerotic narrowing in the basilar artery was not treated on this occasion. The left vertebral artery was occluded distal to the left PICA.
B, 3D surface-rendered image of the right vertebral artery before treatment shows the circumferential "apple-core" configuration of the lesion and served as a baseline for evaluation of the hypoplastic PICA (arrow).
C, After predilatation, as described in the text, and placement of an AVE 4 x 18-mm GFX stent expanded with low pressures, a satisfactory lumen is observed.
D, 3-month follow-up angiogram shows no evidence of restenosis at the stent site (arrows). The right PICA remains patent.
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