目的 研究后路胸椎椎弓根螺钉 植入术治疗脊柱侧凸的CT影像学特征及近 期疗效。方法 选取2013年2月至2015年2 月来我院进行治疗的脊柱侧凸患者42例， 对其行胸椎椎弓根螺钉植入术。对患者手 术前、术后1个月、3个月、6个月腰背疼 痛情况进行分析；比较患者手术前、术后 1个月、3个月、6个月CT影像学参数改变 情况，评价近期疗效；对典型病例的CT 影像进行分析。结果 手术后患者腰背疼 痛情况较治疗前显著缓解(P<0.05)，术后 患者冠状位Cobb角度逐渐变小，顶椎偏移 距离减少，矢状面和躯干平衡逐渐恢复 (P<0.05)。结论 胸椎椎弓根螺钉治疗脊 柱侧凸效果显著，CT扫面有助于确保手术 的顺利进行和术后疗效判断，值得临床推 广。

Objective To explore the CT imaging analysis and short term efficacy evaluation of thoracic pedicle screw implantation in the treatment of scoliosis. Methods 42 patients with scoliosis coming to our hospital from February 2012 to February 2013 were treated with thoracic pedicle screw implantation. To analyze the waist and back pain of patients before the treatment and 1 month, 3 months and 6 months after the treatment; CT imaging parameters were compared before the treatment and 1 month, 3 months and 6 months after the treatment to evaluate the short-term curative effect. CT images of typical cases were analyzed. Results After the surgery, patients with waist and back pain were significantly less than those before treatment (P<0.05). After the surgery, the coronal Cobb angle gradually became smaller, the offset distance of the apical vertebra decreased, the sagittal plane and trunk balance gradually recovered (P<0.05). Conclusion Thoracic pedicle screws in the treatment of scoliosis are effective. CT imaging can help to ensure the success of the surgery and to judge the efficiency. It is worth clinical promotion.