磁共振成像及后处理技术对内耳细微解剖结构的评价

Application of inner ear MRI imaging and post-processing technique to evaluate to the anatomy of inner ear

目的探讨内耳磁共振成像(MRI)及后处理技术显示内耳解剖结构的价值。方法对62例124耳进行SE、TSE、3D-CISS序列扫描,并采用多平面重组(MPR)、最大密度投影(MIP)、容积重组(VR)、仿真内窥镜(MRVE)等技术进行后处理,观察影像对内耳膜迷路、内听道神经等内耳解剖结构的显示。结果 MPR清晰显示122耳的细微内部结构,对神经显示优于MIP。MIP能多角度立体观察120耳膜迷路、内听道等细小结构及相互关系。MRVR可立体多方位显示124耳的表面形态及其相互间的立体解剖关系。MRVE可清晰显示120内耳的腔内结构。结论 MRI成像技术能够清晰显示内耳、内听道的解剖结构,具有很高的临床应用价值。

Objective To study the value of MRI imaging in the inner ear and the post-processing technology to display the anatomical structure of the inner ear. Methods One hundred and twenty-four ears of 62 cases were scanned by SE, TSE, 3D-CISS sequence of MRI, and processed with MPR, MIP, VR, MRVE etc. Inner ear labyrinth and internal auditory canal nerve anatomical structures were observed and displayed. Results The subtle anatomy of 122 cases were clearly displayed by MPR, which is superior to MIP in terms of showing nerve. MIP can show 120 membranous labyrinth of internal auditory canal and other small structures and their relationship by multi-angle anal- ysis. MPVR can display the surface morphology of the 124 ears and the relationship between each other of stereoscop- ic anatomy. MRVE can clearly show the structures of inner ear of 120 cases. Conclusion MRI imaging of inner ear can clearly show the anatomy of inner ear and internal auditory canal, and has high clinical value.