FIG 1. Sample patient with cervical internal carotid artery stenosis.

A, CTA 2D reformation showing the innominate, right common, and internal carotid arteries with a significant stenosis in the proximal ICA.

B, DSA showing right ICA stenosis.

C, Prestent CT perfusion demonstrating abnormal prolongation of mean transit time (MTT; upper right), decreased cerebral blood flow (CBF; lower left), and normal cerebral blood volume (CBV; bottom right).

D, DSA after stent placement.

E, CTA 2D multiplanar reformation with orthogonal projections through the stent.

F, CT perfusion after stent placement demonstrates normalization of MTT (upper right), CBF (bottom left), and CBV (bottom right).