提高对腰椎间突出症突出物的CT影像认识和诊断水平。对 5 0例作L3 ～S1间隙CT水平薄层扫描 ,对突出物的CT影像与手术病理对照分析。根据突出物形态、大小、边缘和密度 ,判断急性突出符合率 77 77% ,慢性突出诊断符合率 86 2 0 % ,穿破后纵韧带压迫硬膜囊诊断符合率 6 6 6 0 %。CT检查能客观地显示突出物和突出物形态、大小、密度、陈旧程度和与周围结构关系。 Improve the lumbar intervertebral protrusion prominent CT image recognition and diagnosis. 50 cases of L3 ~ S1 clearance CT horizontal thin-layer scanning, the projection of CT images and surgical pathology control analysis. According to the shape, size, edge and density of the projections, the acute prominence coincidence rate of 77 77%, the chronic prominence coincidence rate of 86 20%, and the compression rate of the dural ligament compression dural bladder 66.6%. CT examination can objectively display the shape and size of protrusions and protrusions, the density, the degree of aging and the relationship with the surrounding structure.