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. Author manuscript; available in PMC: 2017 Jun 28.
Published in final edited form as: Handb Clin Neurol. 2014;123:265–283. doi: 10.1016/B978-0-444-53488-0.00012-2

Fig. 12.6.

Fig. 12.6

Brain images of a patient with varicella-zoster virus vasculopathy and infarction. (A) Diffusion-weighted image (B value 1000) shows restricted diffusion in the right anterior cerebral artery territory, indicating acute infarction. (B) Three-dimensional time-of-flight magnetic resonance angiography at the time of infarction shows marked narrowing of anterior cerebral arteries, with a new flow gap at the junction of A1 and A2 segments of the right anterior cerebral artery, indicating occlusion on the right (long arrow) and marked stenosis on the left (short arrow). (C) Three-dimensional time-of-flight magnetic resonance angiography of the circle of Willis 5 months before infarction shows normal anterior cerebral arteries. (From Gilden et al. 2002. Copyright © Massachusetts Medical Society. Reprinted with permission).