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FIG 2. Geometric effects of a self-expanding carotid Wallstent in a 78-year-old woman with severe generalized atherosclerotic disease.
A, High-grade stenosis close to the origin of the left ICA with calcified plaque material and an elongated tortuous course distal to the stenosis.
B, The stenosis, including the adjacent curve and carotid bifurcation, was covered with the stent, which was implanted with balloon protection. Note the straightening of the treated segment, with associated kinking and moderate stenosis above the distal end of the stent (arrow); the slight concentric vasospasm at the site of the inflated protective balloon (arrowhead);and stent recoiling and malapposition between the stent filaments and carotid bulb (double arrows).
C, The kinking resolved after rotation of the head to the opposite side.
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