FIGURE 1.

Identification of a midsagittal section from magnetic resonance (MR) images of the brain. (A) A midsagittal MR image of the brain showing the clear separation between the tectum and tegmentum of the midbrain by the cerebral aqueduct, a visible fourth ventricle and cerebellar vermis, clear distinction of the septum pellucidum and interthalamic connection, and visible anterior to posterior commissures. (B) T1-weighted MR images of the brain of a younger adult male that simultaneously showing the coronal, sagittal, and horizontal series of the sections provided by the Picture Archiving and Communication System software.