Correlation Between Clinical Parameters And Diffusion-Weighted Magnetic Resonance Imaging In Idiopathic Intracranial Hypertension

Idiopathic intracranial hypertension (IIH) is a neurological disorder characterized by increased intracranial pressure without an identifiable etiology and is an important cause of papilledema and visual loss [1, 2]. Although many patients retain good visual function, permanent visual loss can occur and there are few clinical parameters that are predictive of final visual outcome [1]. Orbital imaging offers an alternative and quantitative method to assess papilledema as well as other structural changes in the optic nerve characteristic of IIH [3-5]. Diffusion-weighted magnetic resonance imaging (DW-MRI) hyperintensity of the optic nerve head (ONH) has been reported [6], but the degree to which this finding correlates with visual parameters and outcomes remains unknown.