MRH在内耳成像及病变诊断中的应用研究

目的 比较多平面重建(MPR)、最大密度投影(MIP)、容积再现(VR)三种磁共振水成像技术(MRH)后处理方法 对内耳解剖结构的显示情况及对内耳病变的应用价值.方法 选择40例健康成人及35例临床确诊为感音神经性耳聋(SNHL)的患者内耳行高分辨三维快速自旋回波T2加权序列(3D TSE T2WI)横断面扫描,然后行...

Application of magnetic resonance hydrography technique in imaging of inner ear and diagnosis of inner ear diseases

Objective:To compare 3 kinds of post-processing methods of magnetic resonance hydrography(MRH) technology(MPR,MIP and VR) in the usage of inner ear.Materials and Methods:Thirty-five patients with sensorineural hearing loss(SNHL) and 40 controls were recruited.High-resolution three-dimensional turbo spin echo T2WI(3D TSE T2WI) axial scanning and bilateral oblique sagittal scanning were performed in each subject with the data transmitted to the workstation for reconstruction by ViewForum.The data of inner ear was compared among different reconstruction modalities.Results:(1) Subtle anatomical structures of cochleovestibular nerve,facial nerve,and inner ear could be clearly shown in 80 ears of 40 adults.(2) The height of semicircular canals and diameter of upper and lateral semicircular canals were different between VR and MIP(P=0.001,P=0.000).(3) MPR was superior in displaying CN,FN,SVN and IVN;the scores of VR are higher than that of MPR and MIP in displaying the structure of V,PSC,SSC and HSC.Conclusion:Among the 3 methods of post-processing,MPR is the best to show the nerves of the labyrinth.VR is the best to display the details of inner ear diseases.