Axial modified T2-weighted TSE images at 6 canonical levels of the postmortem brain stem orientated parallel to the anterior/posterior commissure plane. Axial modified T2-weighted TSE images at 6 canonical levels of the postmortem brain stem orientated parallel to the anterior/posterior commissure plane. Upper row: A, cranial midbrain; B, caudal midbrain. Middle row: C, cranial pons; D, caudal pons. Lower row: E, cranial medulla, F, caudal medulla. Improved image contrast from the modified TSE sequence directly demonstrates even small structures like the medial longitudinal fasciculus (16). Note the sensory decussation of the medial lemniscus in the caudal medulla (asterisk, F). The motor decussation is demonstrated in Fig 3. M.J. Hoch et al. AJNR Am J Neuroradiol 2019;40:401-407 ©2019 by American Society of Neuroradiology