【摘要】 目的 探讨在没有颞颌关节专用线圈情况下颞颌关节的MR扫描技术。方法 79例共158侧颞颌关节,其中35例70侧颞颌关节使用头线圈,44例88侧颞颌关节使用矩形表面大线圈,行斜矢状面的快速双回波自旋序列（Pd+T2_tse）、斜冠状面多回波序列（Multiple eecho 2 dimension,Me₂d）扫描。结果 158侧颞颌关节图像皆可以满足诊断需要,应用矩形表面大线圈的图像质量明显好于头线圈,有较好的对比度、空间分辨率和较高的信噪比。158侧病例中,20侧正常,138侧符合颞下颌关节紊乱综合征的MR影像学诊断。结论 使用矩形表面大线圈,通过对扫描序列,扫描参数的设计,可以得到符合临床要求的高质量颞下颌关节的MR图像。更多还原

【Abstract】 Objective To study MR scanning technique for temporomandibular joint（TMJ） without temporomandibular coil.Methods TMJ in 79 cases were examined with MRI using head coil or CP flex large coil,coronal Pd+T2_se,Me₂d.Results All images in 158 cases were satisfactory for clinical diagnosis.The image quality using CP flex large coil was better than that using head coil in image contrast,spatial resolution and signal to noise ratio.20 joints were normal and 138 joints were diagnosed as temporomandibular disorder（TMD） by MRI.Conclusion MR image quality of TMJ using CP flex large coil is fine for clinical diagnosis by sequence selection and parameter adjustment.更多还原