Fig. 3

A–E A 10-year-old male child with headache and blurring of vision. A Coronal T2W image shows asymmetry of both lateral ventricles being larger on the right side with obstructing membrane in the right foramen of Monro (blue arrow), B sagittal T2 DIVER image reveals patent normal aqueduct (white arrow), C, D axial phase-contrast images reveal normal CSF flow through the aqueduct at systole (C) and diastole (D) (black arrows), and E velocity time curve- and CSF flow curve-associated table reveals irregular CSF flow curve indicating irregular to and fro movement of the CSF proximal to the site of obstruction with PSV: 7.8 cm/s, PDV:7.9 cm/s, MV: 7.8 cm/s, MSF: 0.176 m/s and SV: 61 µl (hyperdynamic CSF circulation with high CSF velocities and stroke volume and normal flow through aqueduct of Sylvius unilateral obstructive hydrocephalus at level of foramen of Monro by a membrane)