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Figure 1: Cerebral angiography showing multiple segments of abnormally dilated and narrowed branches of cerebral arteries, suggesting a vasculitis. The dilated segments of vessels appeared distended beyond their expected normal caliber. (a and b) Injection of the right internal carotid artery (ICA). (c and d) Injection of the left ICA. (e and f) Injection of the vertebral artery

Figure 1: Cerebral angiography showing multiple segments of abnormally dilated and narrowed branches of cerebral arteries, suggesting a vasculitis. The dilated segments of vessels appeared distended beyond their expected normal caliber. (a and b) Injection of the right internal carotid artery (ICA). (c and d) Injection of the left ICA. (e and f) Injection of the vertebral artery