Magnetic resonance imaging findings in patients with acute sensorineural hearing loss

Kawashima Yoshiyuki

doi:10.11289/otoljpn.32.275

<p>The etiologies of the majority of acute sensorineural hearing loss cases remain unknown or uncertain. Recent advances in diagnostic imaging techniques such as MRI have increased the likelihood of detecting characteristic findings in patients with acute sensorineural hearing loss. However, there are many uncertainties in the relationship between the etiology of hearing loss and the MRI findings. This article briefly summarizes four research points from a recently conducted study on the MRI findings of patients with various acute sensorineural hearing loss. The research foci include: 1) a profoundly hypointense rim at the surface of the brain on a T2*-weighted image and a hypointense rim around the root of the vestibular nerve on cisternography in patients with superficial siderosis, 2) a vascular loop of the AICA/PICA entering the internal acoustic canal in patients with idiopathic sudden sensorineural hearing loss, 3) the detection rate of endolymphatic hydrops in patients with various acute sensorineural hearing loss, and 4) an intense signal in the inner ear on four-hour delayed gadolinium-enhanced three-dimensional fluid-attenuated inversion recovery in patients with vestibular schwannoma and intralabyrinthine schwannoma.</p>

Magnetic resonance imaging findings in patients with acute sensorineural hearing loss

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