大前庭导水管综合症的影像学诊断

发布时间：2018-01-20 14:34

本文关键词： 大前庭导水管综合症内淋巴管和内淋巴囊感音神经性聋 CT MRI　出处：《吉林大学》2012年硕士论文　论文类型：学位论文

【摘要】：本文回顾性分析了我院2010年2月-2011年6月，24例（47耳）确诊为大前庭导水管综合症患者的相关临床资料及CT、MRI表现，并对CT、MRI图像具体数据进行测量、比较及相关分析。对影像学资料进行分析测量，讨论前庭导水管扩大的影像学表现及诊断标准、听力损失与前庭导水管管径、内淋巴囊信号及内淋巴囊体积间的关系，以及大前庭导水管扩大致听力损害可能的致病机制，并对CT和MRI两种检查方法的比较。得出以下结论：大前庭导水管综合症听力损失与前庭导水管内径、内淋巴囊信号及内淋巴囊体积无相关性。前庭导水管扩大导致感音神经性耳聋的致病机制尚不清楚，可能由于内淋巴反流所致。在轴位CT图像上可选取测量前庭导水管中段管径宽度MDVA或前庭导水管外口宽度ODVA诊断前庭导水管扩大，但以测量MDVA更为准确。CT和MRI都能够准确诊断前庭导水管扩大，，MRI更为直观、明确。
[Abstract]:The clinical data and CT MRI findings of 24 patients with large vestibular aqueduct syndrome diagnosed in our hospital from February 2010 to June 2011 were retrospectively analyzed. The specific data of MRI images were measured, compared and related analysis. The imaging findings and diagnostic criteria of vestibular aqueduct enlargement, the relationship between hearing loss and vestibular aqueduct diameter, endolymphatic sac signal and volume of endolymphatic sac were discussed. The possible pathogenetic mechanism of hearing loss caused by enlarged aqueduct of large vestibular aqueduct and comparison of CT and MRI examination methods were also made. The following conclusions were drawn: hearing loss of large vestibular aqueduct syndrome and inner diameter of vestibular aqueduct. There is no correlation between endolymphatic sac signal and volume of endolymphatic sac. The pathogenesis of sensorineural hearing loss caused by vestibular aqueduct enlargement is unclear. It may be caused by endolymphatic reflux. In axial CT images, MDVA can be selected to measure the diameter width of the middle segment of vestibular aqueduct or ODVA to diagnose the enlargement of vestibular aqueduct. But both CT and MRI can accurately diagnose the enlarged vestibular aqueduct by measuring MDVA more accurately.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：R764

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