Venous sinus stenosis (VSS) is a narrowing of the major dural venous sinuses, typically the transverse and/or sigmoid sinuses, often associated with idiopathic intracranial hypertension (IIH). Diagnosis is based on clinical features and confirmatory imaging and pressure studies.
Modality | Findings | Role |
---|---|---|
MRI/MRV | Sinus narrowing, optic sheath distension | First-line screening |
CT Venography | Confirms anatomy, good bone detail | Complementary study |
DSA + Manometry | Direct visualization, pressure gradient measurement | Definitive diagnosis |