Fig. 3From: Neuroendoscopic treatment of multiple intracranial arachnoid cysts: a case reportImages obtained a week after the operation. a T2-weighted axial MR image. b and c Cine phase-contrast MR image. b Arrow indicates that satisfactory CSF flow through aqueduct of Sylvius is detected. â–²Indicates the fenestrations of the apical membrane (f1 and f2). c â–²Indicates two fenestrations of the basal cyst membrane behind the midline (f3 and f4)Back to article page