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Axial slices through a PDTSE sequence structural scan of the brainstem. These were designed to provide maximal resolution and contrast within the brainstem to aid accurate region of interest mask formation. The substantia nigra (SN) and PAG are seen in lighter contrast. The red nucleus (RN), dentate nucleus (DN), decussation of the corticospinal tracts (DCST), and inferior olivary nucleus (ION) are labeled.
