08 December 2009

Idiopathic Intracranial Hypertension

T2 images show bilateral optic nerve atrophy with bilateral distention of the perioptic subarachnoid space, flattening of the posterior sclera, intraocular protrusion of prelaminar optic nerve (arrow on last image), elongated and tortuous optic nerves, partially empty sella due to enlargement of the suprasellar cistern. Role of MRI is to assist in diagnosis - not to make it. It's also important to exclude sinus thrombosis.
Interesting article:
Lim MJ - Magnetic Resonance Imaging Changes in Idiopathic Intracranial Hypertension in Children