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<jats:sec><jats:title>Objectives:</jats:title><jats:p> This study investigated the relationship between quantitative value of endolymphatic hydrops in the affected ear and the hearing threshold in patients with unilateral Meniere’s disease. </jats:p></jats:sec><jats:sec><jats:title>Study Design:</jats:title><jats:p> Prospective study. </jats:p></jats:sec><jats:sec><jats:title>Methods:</jats:title><jats:p> Forty patients with unilateral definite Meniere’s disease were diagnosed in outpatient clinic. We recorded their clinical symptoms (duration of vertigo and tinnitus and duration of vertigo attacks), and obtained the hearing thresholds of high, middle, and low by pure tone audiometry. A 3D-FLAIR MRI revealed endolymphatic hydrops and assessed quantitative values of cochlear and vestibular endolymphatic hydrops. We assessed the correlation between hearing thresholds and quantitative values of endolymphatic hydrops. </jats:p></jats:sec><jats:sec><jats:title>Results:</jats:title><jats:p> All patients showed varying degrees of endolymphatic hydrops in the affected ear. With the duration of vertigo, tinnitus and vertigo attacks as control variables, partial correlation analysis showed that the correlation coefficients between quantitative value of cochlear hydrops and hearing thresholds of low, middle, and high tone in the affected ear were 0.581, 0.610, and 0.125, respectively. The correlation coefficients between quantitative value of vestibular hydrops and hearing thresholds of low, middle, and high tone in the affected ear were 0.727, 0.569, and 0.201, respectively. </jats:p></jats:sec><jats:sec><jats:title>Conclusions:</jats:title><jats:p> The degree of endolymphatic hydrops in Meniere’s disease can be revealed and assessed by 3D-FLAIR MRI after intravenous administration of double doses of gadoterate meglumine. Clinical evaluation of endolymphatic hydrops in Meniere’s disease can be assisted by low- and middle-tone hearing thresholds, thereby providing anatomical support for the clinical symptoms of Meniere’s disease. </jats:p></jats:sec>