探讨MR内耳水成像技术的应用

Study on the application of magnetic resonance hydrography technology

目的回顾性分析35例怀疑内耳病变患者的内耳MRI水成像特点,探讨磁共振内耳水成像技术的临床应用价值。方法利用西门子公司1.5T超导型扫描机,采用三维快速自旋回波序列(3D-TSE),对35例疑有内耳疾病患者作内耳水成像检查,所有患者均先行常规MR扫描,并行最大信号强度投影MIP及MPR后处理。结果均能满意显示两侧内耳的解剖结构:前庭、耳蜗、半规管、内听道。结论内耳水成像是一种有效且无创的显示双侧内耳膜迷路及内听道精细解剖结构的检查方法,它不仅可以显示内耳膜迷路、内听道的立体解剖结构,而且能够清晰显示其通畅程度,这样就可以帮助临床分析病情,同时为内耳外科手术,尤其是电子耳蜗植入等手术提供重要信息,并在一定程度上可排除一些绝对或相对禁忌症,大大提高手术的准确性。

Objective To retrospectively analyse of 35 cases suspected with inner ear disease with magnetic resonance hydrography features, to discuss the technology of magnetic resonance hydrography in clinical applications. Methods U- sing siemens 1.5 T superconducting scanners, we adopted three dimensional fast sequence （3D-TSE）. In 35 cases suspec- ted internal ear disease by hydrography, all patients were antecedent general MR scanning. The reconstruction included maximum intensity projection （MIP） and multi-planar reconstruction （MPR）. Results Both sides image can be satisfied with the display of the inner ear anatomical structures： vestibular, cochlear implants, semicircular canals, and internal au- ditory canal. Conclusion Hydrography is an effective and non-invasive display bilateral labyrinth and the internal auditory canal fine structure. It is not only able display 3-dimensional anatomical structures of the labyrinth and internal auditory canal, but aeso able to clearly demonstrate its internal. It can help clinical analysis of illness, and treat by surgery, especially provide important information to electronics cochlear implant, which could be excluded some absolute or relative contraindications, greatly increases accuracy.