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(a) Constructive interference in steady state imaging of magnetic resonance imaging (MRI) revealing vascular compression at the root exit zone by the left vertebral artery (VA) (arrow) and at the cisternal portion by anterior inferior cerebellar artery (AICA) (arrowhead). (b) MRI facilitates 3D confirmation of the relationships between vessels and nerves. (c) Schematic drawing of 3D MRI. VII: Facial nerve, VIII: Vestibulocochlear nerve.
