【摘要】 目的探讨低场磁共振在人工耳蜗植入术前评估中的应用价值。资料与方法使用GE Signa Excite0.35T永磁磁共振系统对拟行人工耳蜗植入术的24例患儿行常规MRI检查排除脑内病变,内耳三维稳态进动快速成像(3D-FIESTA)扫描,并对原始图像进行后处理,重组为二维或三维图像。结果14例28耳良好地显示内耳及迷路的形态结构。内耳发育畸形5例7耳,内听道发育畸形3例5耳,大前庭导水管综合征2例3耳,合并脑白质病变3例。结论低场磁共振能够清晰地显示内耳的解剖结构,在人工耳蜗植入术前评估中具有重要价值,可以帮助临床选择适合的植入耳,减少手术风险。更多还原

【Abstract】 Objective To investigate the value of low field MRI in pre-operation assessment for artificial cochlear implantation.Materials and Methods Twenty-three cases performed MR examinations by GE SIGNA EXCITE 0.35T MR system before artificial cochlear implantation operation.Conventional brain scan was used to exclude the intracranial diseases.3D-FIESTA axial and T2WI coronal scan of inner ear were reconstructed by MIP,MPR and VR methods.Resu-lts MR findings showed normal structure of cochlear nerve and labyrinth in 14 cases(28 ears),ochlear malformations in 5 cases(7ears),internal auditory canal malformations in 3 cases(5 ears),vestibular and cochlear aqueduct enlargement in 2 cases(3 ears),and brain white matter disease in 3 cases.Conclusion Low field MRI is able to display anatomy of internal ear clearly and play an important role in pre-operation assessment.It can help doctor to select suitable ear and reduce risks of operation.更多还原