Fig 2.

Representative images of neovascularization and ulceration of symptomatic carotid artery stenosis before CAS. A, OCT demonstrates neovascularization as a no-signal-intensity microchannel structure without connection to the vessel lumen that was present in >3 continuous cross-sections of OCT images (arrow). B, The corresponding image from IVUS does not show these findings. C, OCT demonstrates a small ulceration as a cavity with a lacerated superficial intimal layer (arrow). D, The corresponding image from IVUS does not depict this lesion. Bar = 1 mm.