Magnetic resonance imaging findings in the auditory pathway of patients with sudden deafness
Magnetic resonance imaging findings in the auditory pathway of patients with sudden deafness
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DOI：
10.1097/00129492-200405000-00008
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发表时间：
2004-05-01
影响因子：
2.1
通讯作者：
Ylikoski, J
中科院分区：
文献类型：
--
作者：
Aarnisalo, AA;Suoranta, H;Ylikoski, J
目的：本研究的目的是评估突发性感音神经性听力损失（SSNHL）患者的磁共振成像（MRI）表现，并根据其临床重要性对这些表现进行分级。研究设计：前瞻性临床研究。环境：三级转诊中心（大学医院）。患者：连续82例符合纳入标准的SSNHL患者的MRI表现。主要结果测量：我们研究了由一位经验丰富的神经放射学家分析的1.0-T MR图像。结果：6例（7%）听力损失与病理观察明显相关，其中4例为内耳道或桥小脑角听神经瘤，1例为桥水平改变，1例为颈内动脉闭塞。在其他6例（7%）MRI显示可能是听力损失病因的患者中，2例患者表现为脱髓鞘过程，4例患者表现为血管异常，如颈海绵状瘘、椎动脉或基底动脉位置异常以及静脉血管瘤。结论：增强磁共振成像似乎是SSNHL患者的一种有用的检查。目的不应该只是排除特定的耳蜗后病因，但通过适当的技术，MRI可以显示外周和中枢异常。
Objectives: The objectives of this Study were to evaluate mag-netic resonance imaging (MRI) findings of patients with sudden sensorineural hearing loss (SSNHL) and to grade the findings based on their clinical importance.Study Design: A prospective clinical study.Setting: A tertiary referral center (university hospital).Patients: MRI findings of 82 consecutive patients with SSNHL fulfilling the inclusion criteria.Main Outcome Measures: We studied 1.0-T MR images that were analyzed by one experienced neuroradiologist.Results: Of the six cases (7%) in which clearly hearing loss was obviously associated with the observed pathology, four patients had an acoustic neuroma in the internal auditory canal or cerebellopontine angle, one patient had changes at the level of pons, and one patient had an obliterated internal carotid artery. Of the six other patients (7%) in which MRI revealed changes that suggest a possible etiology to hearing loss, two patients showed a demyelinating process and four patients showed blood vessel abnormalities Such as caroticocavernous fistula, abnormally locating vertebral or basilar artery, and a venous angioma.Conclusions: Enhanced MR imaging seems to be a useful examination in patients with SSNHL. The aim should not be only to exclude specific retrocochlear etiologies, but by appropriate techniques, MRI could reveal both peripheral and central abnormalities.