Stenting Of Symptomatic Cerebral siNus stenosIs With the laserCut Self-expanding SILANCE Stent

Inclusion Criteria: * Diagnosis of idiopathic intracranial hypertension (IIH) according to the Modified Dandy Criteria. * Cerebrospinal fluid (CSF) lumbar puncture opening pressure \> 25 cm H₂O. * Presence of lateral venous sinus stenosis confirmed by venous magnetic resonance angiography (MRA) or venous computed tomography angiography (CTA). * Presence of clinical symptoms consistent with IIH, including headaches, visual field loss, papilledema or pulsatile tinnitus. * Venous pressure gradient across the stenosis \> 3 mmHg under general anaesthesia, \> 4 mmHg under local anaesthesia. * Temporal Bone CT done for Patients suffering from Pulsatile Tinnitus * Written informed consent obtained prior to any study-related procedures.