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MRI brain shows hyperintense signal at the ventral, middle, and dorsal part of bilateral median medulla on T2/FLAIR, hypointense signal on T1W at these regions. There is restricted diffusion on DWI/ADC mapping at this region.
MRA brain shows dominant vertebral artery. Loss of normal flow at the distal part of V3 and V4 segment of the right vertebral artery.