多层螺旋CT对椎体后缘软骨结节的诊断

目的:探讨椎体后缘软骨结节在多层螺旋CT(MSCT)的表现及特点,提高对该病变的显示及诊断率。方法:25例椎体后缘软骨结节进行螺旋CT扫描、薄层重建后再进行轴位、矢状及冠状面重建,分析比较几种重建方法对椎体后缘软骨结节的显示效果。结果:轴位重建清晰显示腰椎体后缘骨质缺损、游离骨块及合并相应水平椎间盘突出情况;矢状位重建是对轴位重建的良好补充,并可以较好显示相应水平硬膜囊受压情况;冠状位重建对显示椎体后缘骨缺损及游离骨块也有一定帮助。结论:多层螺旋CT及多平面重建(MPR)在椎体后缘软骨结节的影像学诊断中具有重要意义。

Diagnosis of lumber posterior marginal intraosseous cartilaginous node with multislice CT

Objective:To investigate the characteristics of lumber posterior intraosseous cartilaginous node(LPMN) with multislice CT(MSCT),and to determine effectiveness of MSCT in diagnosis of LPMN.Methods:Twenty-five cases with LPMN underwent MSCT scans,and multiplanar reformation(MPR) on axial,sagittal and coronal plane,on the basis of thin slice reformation.To analyze and compare the MRP on axial,sagittal and coronal plane.Results:MPR on axial plane well displayed of defect of lumber posterior and chip,and with disk herniation could be showed together.MRP on sagittal plane was an advantageous addition to on axial plane,and displayed spinal stenosis clearly.MRP on coronal plane could provide information helpful to the diagnosis of LPMN.Conclusion:MSCT and MPR had important value in diagnosis of LPMN.