Fig. 1
From: Neuroendoscopic treatment of multiple intracranial arachnoid cysts: a case report
Preoperative MR image. a and b The T2-weighted axial image: multiple arachnoid cysts. c and d Preoperative Cine phase-contrast MR image: Arrow directs that the aqueduct of sylvius and the exit of fourth ventricle are blocked. e The T2-weighted coronal MR image: Arrow shows that the left anterior cranial fossa is likely communicated with the left ethmoid sinus. f A coronal high-resolution bone window noncontrast CT image: Arrow indicates that left ethmoid is discontinuous