Department of Neuroradiology, Rouen University Hospital, 76000 Rouen, France; Department of Neuroradiology, Hôpital Lariboisière, 75010 Paris, France.
Department of Neuroradiology, Rouen University Hospital, 76000 Rouen, France.
Diagn Interv Imaging. 2019 May;100(5):259-268. doi: 10.1016/j.diii.2019.01.006. Epub 2019 Feb 14.
The purpose of this study was to assess whether the volume of the vestibular endolymphatic space correlates with the degree of hearing loss using heavily T2-weighted fast imaging employing steady-state acquisition with cycle phase (FIESTA-C) MRI.
A total of 23 patients with vestibular schwannoma, as diagnosed on typical image findings, who underwent FIESTA-C MRI were included. There were 13 women and 10 men with a mean age of 63.5±9.3 (SD) years (range: 49-88years). Two radiologists independently evaluated the volume of the utricle and saccule. Correlation between tumor volume, vestibular endolymphatic space volume and degree of hearing loss - as evaluated with the levels of pure-tone average and speech recognition threshold - were searched for.
The mean saccular, utricular and tumor volumes were 3.17±1.1 (SD) mm (range: 1.45-5.7mm), 14.55±5 (SD) mm; (range: 6.6-23.9mm) and 17.4±5.5 (SD) mm; (range: 8.3-25.4mm), respectively. There was a moderate correlation between the volume of the utricle and the degree of hearing loss as evaluated with the levels of pure-tone average (rho=0.5; P=0.015) and speech recognition threshold (rho=0.58; P=0.004). There were no significant correlations between saccular and tumor volumes and the degree of hearing loss.
The volume of the utricle in patients with obstructive vestibular schwannoma moderately correlates with the degree of hearing loss.
本研究旨在评估使用重 T2 加权快速稳态采集相位（FIESTA-C）MRI 检查时，前庭内淋巴间隙的容积与听力损失程度之间的相关性。
共纳入 23 例经典型影像学表现诊断为前庭神经鞘瘤的患者，所有患者均行 FIESTA-CMRI 检查。患者中包括 13 名女性和 10 名男性，平均年龄为 63.5±9.3（标准差）岁（年龄范围：49-88 岁）。两名放射科医生独立评估了椭圆囊和球囊的容积。寻找肿瘤体积、前庭内淋巴间隙体积与听力损失程度（通过纯音平均听阈和言语识别阈进行评估）之间的相关性。
平均球囊、椭圆囊和肿瘤体积分别为 3.17±1.1（标准差）mm（范围：1.45-5.7mm）、14.55±5（标准差）mm（范围：6.6-23.9mm）和 17.4±5.5（标准差）mm（范围：8.3-25.4mm）。椭圆囊容积与纯音平均听阈（rho=0.5；P=0.015）和言语识别阈（rho=0.58；P=0.004）评估的听力损失程度之间存在中度相关性。球囊和肿瘤体积与听力损失程度之间无显著相关性。
梗阻性前庭神经鞘瘤患者的椭圆囊容积与听力损失程度中度相关。
