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目的探讨MR内耳水成像技术及对人工耳蜗植入术的术前评估价值。材料与方法20例重度耳聋患者,采用Toshiba Visart 4.01.5T超导型磁共振扫描仪,快速自旋回波序列行MR内耳水成像。结果20例均清晰显示内耳膜迷路及内听道的精细解剖结构,耳蜗畸形根据MR水成像的影像表现可分为五型。结论MR内耳水成像不仅可以显示内耳膜迷路的立体解剖结构,而且可以清晰显示其通畅程度,对于人工耳蜗植入术的术前评估具有重要价值。
Objective To investigate the MR inner ear water imaging technique and the preoperative evaluation of cochlear implants. MATERIALS AND METHODS Twenty patients with severe deafness were examined with MR spinneret using the Toshiba Visart 4.01.5T superconducting magnetic resonance scanner. Results All 20 cases clearly showed the internal eardrum lacunar and the fine anatomic structure of the internal auditory canal. The cochlea deformity could be divided into five types according to the MR imaging features. Conclusion MR auricular water imaging can not only show the three-dimensional anatomy of the lost inner ear, but also show the patency clearly. It is of great value for the preoperative evaluation of cochlear implantation.