目的 观察脊柱外伤患者CT、MRI 影像表现并比较两者诊断价值。方法 对 本院2013年4月-2016年1月60例脊柱外伤 患者的CT、MRI资料进行回顾性分析，观 察患者CT、MRI图像表现，并比较两者对 脊椎骨折、碎骨片、韧带损伤等检出结 果。结果 CT显示脊椎骨折56例(93.3%)， 表现为椎体变形或椎体楔状压缩；MRI显 示脊椎骨折60例(100.0%)，椎体内呈现 T1WI低或等信号，T2WI高信号。MRI对脊 椎骨折检出率明显高于CT(P＜0.05)；CT 显示碎骨片176块，较MRI的121块差异有 统计学意义(P＜0.05)。CT对脊椎曲度改 变、椎管容积改变、神经根损伤及椎旁软 组织损伤显示率与MRI比较差异无统计学 意义(P＞0.05)。MRI对韧带损伤检出率为 68.3%显著高于CT的10.0%，差异有统计学 意义(P＜0.05)。结论 CT在脊柱外伤碎骨 片显示上相比MRI更有优势，而MRI相比CT 在脊椎骨折、韧带损伤显示上更有优势， 各有优劣，临床根据患者情况灵活应用。

Objective To observe the CT and MRI findings of patients with spinal trauma and to compare the diagnostic value. Methods The CT and MRI data of 60 patients with spinal trauma who were admitted into our hospital between April 2013 and January 2016 were retrospectively analyzed. The CT and MRI findings were observed. The detection results of spinal fractures, bone pieces and ligament injury, etc. were compared between the two. Results CT showed that 56 cases (93.3%) were with spinal fractures, manifesting as vertebral deformation or vertebral wedge compression; MRI showed that 60 cases (100.0%) were with spinal fractures, showing low or equal signal on T1WI in vertebral body and high signal on T2WI. The detection rate of MRI in spinal fractures was significantly higher than CT (P<0.05). CT displayed 176 bone pieces. Compared with 121 pieces displayed by MRI, there was significant differences (P<0.05). There was no significant difference in display rates in change of spinal curvature, change of spinal canal volume, nerve root injury and paravertebral soft tissue injury between CT and MRI (P>0.05). The detection rate of MRI in ligament injury (68.3%0 was significantly higher than that of CT (10.0%) (P<0.05). Conclusion CT has more advantages in displaying bone pieces of spinal trauma over MRI, while MRI has more advantages in displaying spinal fracture and ligament injury over CT. They have their own advantages and disadvantages. They can be chosen according to patient's condition.