CT影像对腰椎间盘突出症手术前后的评估

The Evaluation of Lumbar Intervertebral Disc Protrusion(LIDP) before and after Operation by CT Images

目的探讨CT扫描在腰椎间盘突出症术前及术后的临床价值。方法 40例单纯腰椎间盘突出症患者,男22例,女18例;年龄25-75岁,平均50.6岁。患者术前均行腰椎CT检查,测出椎间盘髓核突出影的CT值。术后1周行CT扫描,同时测量术后椎管内软组织影的CT值。结果术前CT可以扫描到椎间盘突出影、神经根水肿及硬脊膜受压等表现。术后CT扫描对椎管内的软组织分辨率较差。术前椎管突出影CT值为43.70-66.70HU,术后椎管突出影CT值为24.70±5.35。术前及术后的CT值比较,差异有统计学意义(t=12.30,P=0.00)。结论术后早期CT扫描对判断椎管内软组织结果有局限性,但CT值测量对鉴别腰椎间盘突出症术后早期椎管内软组织影的性质具有一定的应用价值及临床意义。

Objective To discuss the clinical value of CT value in patients with lumbar intervertebral disc protrusion（LIDP） before and after operation.Methods 40 cases with lumbar intervertebral disc protrusion（LIDP） were collected.22 cases were male,and 18 cases were female,with the mean age 50.6 years（ranged from 25 to 75 years）.All the patients underwent lumbar CT scanning before operation and CT values of herniated nucleus pulposus were measured.All the patients underwent lumbar CT scanning 1 week after operation and CT values of the soft tissue in vertebral canal were measured.Results CT images showed herniated nucleus pulposus,neural canal edema and dural compression before operation,but it had poor resolution to the soft tissue in spinal canal after operation.CT values of the herniated disc were 43.70-66.70 HU before operation and（24.70±5.35） HU after operation.The differences of CT values before and after operation had statistic significance（t=12.30,P=0.00）.Conclusion CT scanning has limitations to value soft tissue a short time after operation.But CT value has certain application value and clinical significance to distinguish the nature of the soft tissue in vertebral canal.