Evaluation on Grading and Classifications of Deafness,and Their Relationship with Prognosis in Patients with Idiopathic Sudden Neural Hearing Loss Based on 3D-FLAIR MRI
Objective To explore the evaluation on grading and classifications of deafness,and their relationship with prognosis in patients with idiopathic sudden neural hearing loss(ISNHL)based on three-dimensional fluid-attenuated inversion recovery magnetic resonance imaging(3D-FLAIR MRI).Methods A total of 328 patients with ISNHL treated in the hospital were enrolled between April 2020 and April 2023,and all underwent 3D-FLAIR MRI examination.The general data and imaging results of the objects were collected.According to changes in high signal areas,they were divided into group A(196 cases,normal inner ear without abnormal signals),group B(73 cases,high signals absorption)and group C(59 cases,high signals non-absorption).The grading and classifications of deafness in the three groups were recorded,and the prognosis in the three groups was analyzed after targeted treatment.Results There was no significant difference in gender,age or course of disease among the three groups(P>0.05),but there were significant differences in the proportions of dizziness/vertigo and vestibular dysfunction,and treatment time among the three groups(P<0.05).The proportions of dizziness/vertigo and vestibular dysfunction,and treatment time in group C were higher than those in group A and group B(P<0.05).There were significant differences in the grading of hearing loss among the three groups(P<0.05).The hearing loss was mainly moderate in group A,hearing loss was mainly severe and extremely severe in group B,and hearing loss was mainly extremely severe in group C.There were significant differences in types of hearing curves among the three groups(P<0.05).In terms of types of hearing curves,flat decline was the main type in group A,flat decline and total deafness were the main types in group B,and total deafness was the main type in group C.There was no significant difference in total response rate among the three groups(P>0.05).The recovery rate in group A was higher than that in group B and group C(P<0.05).Conclusion 3D-FLAIR MRI is beneficial to clinically determine grading and classifications of deafness in ISNHL patients,and they are closely related to prognosis.