Figure 2

Recent magnetic resonance image showing the trigeminal nerve roots. In Panel A (coronal view) and B (axial view), the trigeminal nerves enter the brainstem at a region referred to as the trigeminal nerve root entry zone (white arrows delineate the trigeminal nerves). In Panel A (coronal view), the right trigeminal nerve and right superior cerebellar artery are overlapped on the right, and can be visualized as two separate structures on the left. In Panel B (axial view), the right superior cerebellar artery can be seen adjacent to the right trigeminal nerve as it enters the brainstem.