Evaluation of the Diagnostic and Prognostic Efficacy of MRI in Acute Sensorineural Hearing Loss and Ménière's Disease

Aims of the study: 1. Evaluate the diagnostic accuracy of MRI with the collection of more specific sequences for the inner ear (3D-FLAIR) in identifying intralabyrinthine anomalies in patients with Ménière's disease or acute/subacute sudden hearing loss and not only the retrochlear pathology/neurological causes . 2. Characterize the vascular and inflammatory MRI patterns 3. Define the prognostic role of MRI with pre- and post-contrast 3D-FLAIR sequence, eliminating confounding factors such as MRI execution time, the methodology used, the effect of previous therapy and the criteria for defining improvement. 4. Correlate 4-hour 3D-FLAIR MRI imaging data with clinical and hematological data