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[目的]探讨 MRI技术在早期诊断腰椎间盘突出症患者术后椎间隙感染的临床价值.[方法]回顾性分析 2014年 1 月至 2017 年 1 月本院收治的 86 例腰椎间盘突出症术后发生椎间隙感染患者的临床资料,所有患者行 MRI检查,确诊后给予积极治疗,分析其 MRI诊断结果,观察比较治疗前后患者的白细胞计数(WBC)、血沉、C反应蛋白(CRP)、白介素-6(IL-6)水平变化.[结果]86 例椎间隙感染患者检出的病原菌中以金黄色葡萄球菌和大肠埃希菌为主要病原菌.患者的感染部位多数集中在 L4/5或 L5/S1椎间隙,病变椎间表现为不同程度的椎间盘碎裂、变小、消失、边缘不齐.MRI检查结果显示病变椎间盘间隙失去正常形态和信号,其中长T1低信号 77 例,T1等信号 9 例;长T2高信号 82 例,短T2低信号 4 例.病变椎间盘间隙上下的椎体软骨终板以及周围邻近的椎体松质骨均表现有不同程度的损坏,椎体形态上未见有明显变化或出现轻微楔形改变,脊柱未见有后凸表现.术后 6 个月随访,86 例椎间隙感染患者中临床症状完全消失者 63 例(73.26%),其余 23 例仍存在轻度间歇性腰痛.所有患者治疗后 WBC、血沉以及 CRP、IL-6 水平均显著低于治疗前,差异具有统计学意义(P ＜0.05).[结论]MRI可清晰显示腰椎间盘突出症髓核摘除术后发生椎间隙感染的患者的病变感染部位,对于椎间隙感染的早期诊断鉴别及治疗具有重要意义.“,”[Objective]To investigate the clinical value of MRI technique in early diagnosis of postoperative intervertebral space infection in patients with lumbar disc herniation.[Methods]The clinical data of 86 patients with intervertebral space infection after lumbar disc herniation in our hospital from January 2014 to January 2017 were analyzed retrospectively.All the patients were examined by MRI and given active treatment after di-agnosis.The results of MRI diagnosis were analyzed.The changes of WBC,erythrocyte sedimentation rate and the level of CRP,interleukin-6 (IL-6)were observed and compared before and after treatment.[Results]Staphylococcus aureus and Escherichia coli were the main pathogens in 86 patients with intervertebral space in-fection.Most of the infection sites of the patients were in L4/5 or L5/S1 intervertebral space.The lesions showed different degree of disc fragmentation,becoming smaller,disappeared and irregular margin.The re-sults of MRI showed that the intervertebral disc space lost its normal shape and signal intensity,including long T1low signal in 77 cases,T1signal in 9 cases,long T2high signal in 82 cases,short T2low signal in 4 cases. The vertebral cartilage endplate and adjacent cancellous bone in the intervertebral disc space showed varying degrees of damage.There were no obvious changes or slight wedge-shaped changes in the vertebrae and no ky-phosis in the spine.Six months after operation,the clinical symptoms of 63 patients with intervertebral space infection were completely disappeared (73.26%),and the remaining 23 patients still had mild intermittent low back pain.The levels of WBC,ESR and CRP,IL-6 in all patients were significantly lower than those before treatment (P＜0.05).[Conclusion]MRI can clearly display the site of infection in patients with intervertebral space infection after lumbar disc herniation.It is of great significance for the early diagnosis and treatment of intervertebral space infection.