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Figure 1 : Brain MRI. (a) Diffusion-weighted imaging showed a hyperintense lesion in the right middle cerebral internal watershed territory consistent with a recent cerebral infarction. (b) 3D time-of-flight magnetic resonance angiography showed an occlusion in the right proximal M1 middle cerebral artery (MCA). (c) In the MR relative cerebral blood volume image, decreased blood volume in the right temporal cortex and right sylvian vessels was found at the level of cerebral peduncles. (d) MR perfusion revealed a prolongation of the mean transit time in the right MCA territory

Figure 1 : Brain MRI. (a) Diffusion-weighted imaging showed a hyperintense lesion in the right middle cerebral internal watershed territory consistent with a recent cerebral infarction. (b) 3D time-of-flight magnetic resonance angiography showed an occlusion in the right proximal M1 middle cerebral artery (MCA). (c) In the MR relative cerebral blood volume image, decreased blood volume in the right temporal cortex and right sylvian vessels was found at the level of cerebral peduncles. (d) MR perfusion revealed a prolongation of the mean transit time in the right MCA territory