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Article Dans Une Revue European Archives of Oto-Rhino-Laryngology Année : 2019

Superior vestibular neuritis: improved detection using FLAIR sequence with delayed enhancement (1 h)

Aina Venkatasamy
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Tri Thai Huynh
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Nathan Wohlhuter
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Hella Vuong
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Dominique Rohmer
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Francis Veillon
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Résumé

INTRODUCTION: Vestibular neuritis is the second cause of vertigo and new imaging protocols using delayed FLAIR with double-dose of gadolinium are proposed for its diagnosis. Our aim is to demonstrate that a single dose of gadolinium is sufficient. METHODS: Thirty-three patients with a unilateral vestibular neuritis are compared to a control group. All patients underwent a FLAIR sequence, 1 hour after intravenous injection of a single dose of gadolinium, on a 1.5 Tesla MRI. Two radiologists analyzed the enhancement intensity of the superior (sup VN) and inferior vestibular nerve (inf VN) and ratios to the signal of the cerebellum were calculated (supVN/C). The statistics were performed using Bayesian analysis. RESULTS: A strong enhancement of the sup VN was observed on the pathological side in 85% of patients with vestibular neuritis. The average signal intensity of the pathological sup VN (139 units ± 44) was more than two times the average intensity in the control group (58.5 units ± 5). The average ratios supVN/C were significantly different between the pathological side in vestibular neuritis (2.43 units ± 0.63) and the control group [1.16 ± 0.14 (Pr(diff > 0) = 1)]. A delayed enhancement > 71.5 units had a sensitivity of 96% and a specificity of 100% for the diagnosis of superior vestibular neuritis. CONCLUSION: A delayed FLAIR sequence, acquired 1 hour after a single dose of gadolinium injection, is a useful method for the diagnosis of vestibular neuritis. An enhancement of the sup VN > 71.5 units was in favor of the diagnosis.
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Dates et versions

hal-03573949 , version 1 (14-02-2022)

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Citer

Aina Venkatasamy, Tri Thai Huynh, Nathan Wohlhuter, Hella Vuong, Dominique Rohmer, et al.. Superior vestibular neuritis: improved detection using FLAIR sequence with delayed enhancement (1 h). European Archives of Oto-Rhino-Laryngology, 2019, 276 (12), pp.3309-3316. ⟨10.1007/s00405-019-05639-7⟩. ⟨hal-03573949⟩
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