3T MRI在内耳诊断中的应用

目的:探讨3T磁共振内耳水成像在内耳病变中的应用价值。方法:分析35例3TMRI内耳水成像影像资料。使用快速三维梯度回波序列(3D-FIESTA),采集内耳所在区域内水信号,送图像工作站进行图像三维重建。结果:3D-FIESTA能满意显示内听道及内耳膜迷路的精细解剖结构,最大强度投影(MIP)重建可获得内耳膜迷路立体图像,多平面容积重建技术(MPVR)能三维立体观察膜迷路结构的解剖关系。结论:MR膜迷路成像可为内耳结构提供可靠的影像学解剖依据,具有一定的临床应用价值。

Clinical Application of 3.0T MR Imaging in the Diagnosis of Inner Ear Lesions

Objective:To discuss the value of fluid-attenuated imaging with 3.0T MRI in the diagnosis of inner ear lesions.Methods:The imaging materials of fluid-attenuated MR imaging in 35 patients were analyzed.Routine T2W and 3D-FIESTA sequences were used with a 3.0T MR scanner.The fluid-attenuated signals of the inner ear region were acquired and the raw data were transferred to a MR workstation for 3-dimensional reconstruction.Results:Detail anatomy of internal auditory canal and membranous labyrinth of inner ear could be showed satisfactorily by 3D-FIESTA sequence.The maximum intensity projection(MIP)technique can display the membranous labyrinth of inner ear stereoscopically.The 3-dimensional anatomic relationship of membranous labyrinth could be demonstrated by multi-planar volume rendering(MPVR).Conclusion:Fluid-attenuated MR Imaging of membranous labyrinth can provide reliable information of inner ear anatomy,which is helpful in clinical application.