Fig. 2
From: MRI imaging characteristics of brainstem and midbrain aqueduct in patients with iNPH
Analysis of brainstem areas in the sagittal plane containing the mesencephalic aqueduct. (a) Upper and low boundaries of the brainstem. Line A passes through the superior cerebellar peduncle (upper limit of the pons) and the lower edge of the quadrigeminal plate, while Line B is parallel to Line A and passes through the inferior cerebellar peduncle (lower limit of the pons). Line C is drawn along the foramen magnum (lower limit of the medulla). (b) Midbrain area above Line (A) (c) Pontine area between Lines A and (B) (d) Total brainstem area.
