Diagnostic value of three-dimensional magnetic resonance imaging of inner ear after intratympanic gadolinium injection, and clinical application of magnetic resonance imaging scoring system in patients with delayed endolymphatic hydrops
Diagnostic value of three-dimensional magnetic resonance imaging of inner ear after intratympanic gadolinium injection, and clinical application of magnetic resonance imaging scoring system in patients with delayed endolymphatic hydrops
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DOI：
10.1017/s0022215113003289
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发表时间：
2013-12
期刊：
影响因子：
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通讯作者：
Xi Gu;Z. Fang;Ying Liu;Lin Sl;B. Han;Rong Zhang;Xi Chen
中科院分区：
文献类型：
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作者：
Xi Gu;Z. Fang;Ying Liu;Lin Sl;B. Han;Rong Zhang;Xi Chen
摘要目的：应用鼓室内注射Gd后内耳三维液体衰减反转恢复磁共振成像，结合外淋巴间隙磁共振成像评分，探讨迟发性内淋巴积水的阳性识别率及诊断价值。方法：对25例迟发性内淋巴积水患者行双侧鼓室注射Gd后进行纯音测听、双热冷热试验、前庭诱发肌源性电位检查和内耳三维磁共振成像检查。对扫描图像的外淋巴间隙进行分析，探讨内淋巴积水的阳性识别率。结果：根据外淋巴间隙的磁共振成像评分和诊断标准，84%的患者有内淋巴积水。相比之下，前庭诱发的肌源性电位和双温冷热试验的阳性识别率分别为52%和72%。结论：鼓室内注射Gd后的三维磁共振成像对迟发性内淋巴积水的诊断及分型具有重要价值。外淋巴间隙评分系统提高了磁共振成像的诊断准确率。
Abstract Objective: Three-dimensional fluid-attenuated inversion recovery magnetic resonance imaging of the inner ear after intratympanic injection of gadolinium, together with magnetic resonance imaging scoring of the perilymphatic space, were used to investigate the positive identification rate of hydrops and determine the technique's diagnostic value for delayed endolymphatic hydrops. Methods: Twenty-five patients with delayed endolymphatic hydrops underwent pure tone audiometry, bithermal caloric testing, vestibular-evoked myogenic potential testing and three-dimensional magnetic resonance imaging of the inner ear after bilateral intratympanic injection of gadolinium. The perilymphatic space of the scanned images was analysed to investigate the positive identification rate of endolymphatic hydrops. Results: According to the magnetic resonance imaging scoring of the perilymphatic space and the diagnostic standard, 84 per cent of the patients examined had endolymphatic hydrops. In comparison, the positive identification rates for vestibular-evoked myogenic potential and bithermal caloric testing were 52 per cent and 72 per cent respectively. Conclusion: Three-dimensional magnetic resonance imaging after intratympanic injection of gadolinium is valuable in the diagnosis of delayed endolymphatic hydrops and its classification. The perilymphatic space scoring system improved the diagnostic accuracy of magnetic resonance imaging.