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AJNR - American Journal of Neuroradiology

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Long-term Follow-up of Asymptomatic Patients with Major Artery Occlusion: Rate of Symptomatic Change and Evaluation of Cerebral Hemodynamics

Nobuhiko Miyazawa^,a, Kazuhiro Hashizume^a, Mikito Uchida^a and Hideaki Nukui^a

^a From the Department of Neurosurgery (N.M., H.N.), Yamanashi Medical University, Yamanashi, Japan, and the Neurosurgical Institute (K.H., M.U.), Cedars-Sinai Medical Center, Los Angeles, CA.

View larger version (63K): [in a new window]   FIG 1. Representative case of a 55-year-old man. MR angiogram shows left ICA artery occlusion, but MR image is normal. Xe-CT image with acetazolamide shows poor response in the left hemisphere.FIG 2. The same patient presented with hemisensory disturbance 2 years later. MR angiogram shows a new occlusion of the right ICA, and MR image shows a small infarction in the left thalamus (arrow). Xe-CT scan with acetazolamide shows poor response on both sides