Fig 3.

Successful recanalization of right chronic ICA occlusion (case 5). A 69-year-old man with a minor completed stroke in the right parietal lobe underwent recanalization at 7 months after the initial diagnosis of right ICA occlusion. A–C, Lateral projections of the right carotid angiogram. A, Before treatment, the occlusive lesion extends from the cervical segment to the cavernous segment of the ICA. B, Just after the recanalization. C, Sagittal reconstruction of 3D-CTA obtained 4 months after the procedure shows no restenosis along the recanalized ICA. D, DWI obtained 1 day after the procedure. Small asymptomatic ischemic lesions are detected in the ipsilateral cerebral hemisphere. E and F, SPECT images with acetazolamide vasodilatory challenge before and 6 months after the procedure, respectively. Severe impairment of the vascular reserve of the right cerebral hemisphere improved after successful recanalization of the right ICA.