PMC8629620_01
Magnetic resonance imaging of the temporal bone: axial T1-weighted slice before gadolinium injection showing hyperintensity of cochlear basal (a) and second turns (b) of the left ear with a normal signal in the right ear.
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fig1
An MRI of the brain and internal auditory canal was performed 3 weeks after and revealed an increased signal intensity on T1-weighted (T1W) (Figure 1) and T2 fluid-attenuated inversion recovery (FLAIR) (Figure 2) images in the left cochlea.
Magnetic resonance imaging: axial T2 FLAIR image showing hyperintensity of the left cochlea.
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fig2
An MRI of the brain and internal auditory canal was performed 3 weeks after and revealed an increased signal intensity on T1-weighted (T1W) (Figure 1) and T2 fluid-attenuated inversion recovery (FLAIR) (Figure 2) images in the left cochlea.
Magnetic resonance imaging of the temporal bone: axial postcontrast T1-weighted slices showing no enhancement after gadolinium injection in the basal (a) and the second (b) turns of the left cochlea.
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No other abnormalities were found, in particular no enhancement after intravenous administration of gadolinium (Figure 3).
Magnetic resonance imaging of the temporal bone: axial (a) and coronal (b) CISS 3D slices showing a signal of discreetly lower intensity in the left cochlea compared to the right one.
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The CISS 3D sequence showed a signal of discreetly lower intensity in the left cochlea compared to the right one (Figure 4).