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  Indian J Med Microbiol
 

Figure 3: Magnetic resonance imaging showing T2 fluid-attenuated inversion recovery hyperintensity (II) involving the right middle cerebral artery–posterior cerebral artery cortical watershed zone and right frontal parasagittal internal watershed zone, with gyral enhancement and diffusion hyperintensity (Ia) with normal apparent diffusion coefficient (Ib). Arterial spin labeling showing hypoperfusion (IV) in the right cerebral watershed zones. Magnetic resonance angiography (v), showing focal severe narrowing of the right cavernous internal carotid artery anterior segment and severe narrowing of bilateral vertebral artery, with eccentric wall thickening and enhancement in three-dimensional T1 sequence (VI a and b). Magnetic resonance perfusion showing increased mean transit time and time to peak in the right cerebral watershed zones (III)

Figure 3: Magnetic resonance imaging showing T2 fluid-attenuated inversion recovery hyperintensity (II) involving the right middle cerebral artery–posterior cerebral artery cortical watershed zone and right frontal parasagittal internal watershed zone, with gyral enhancement and diffusion hyperintensity (Ia) with normal apparent diffusion coefficient (Ib). Arterial spin labeling showing hypoperfusion (IV) in the right cerebral watershed zones. Magnetic resonance angiography (v), showing focal severe narrowing of the right cavernous internal carotid artery anterior segment and severe narrowing of bilateral vertebral artery, with eccentric wall thickening and enhancement in three-dimensional T1 sequence (VI a and b). Magnetic resonance perfusion showing increased mean transit time and time to peak in the right cerebral watershed zones (III)