目的探究去金属伪影序列对胸 腰椎体金属植入患者磁共振影像的影响。 方法 选取2014年1月-2015年1月期间我院 接受治疗的25例胸腰椎(腰椎、胸椎)金 属植入物患者，对所有患者进行胸腰椎磁 共振常规序列和去金属伪影序列扫描， 并使用配对t检验对两种序列检查的扫描 时间和图像质量评分进行分析和比较。 结果 去金属伪影序列图像上金属植入物 的周边软组织信号丢失减轻，且常规序列 的图像模糊和变形情况较去金属伪影序 列图像严重。常规序列图像质量评分为 (3.56±0.53)分，去金属伪影序列图像质 量评分为(4.22±0.67)分，比较两组间差 异统计学具有意义(p＜0.05)。腰椎金属 伪影序列检查时间为11min53s，常规序列 检查时间为9min16s，比较两组间差异统 计学具有意义(p＜0.05)。胸椎去金属伪 影序列检查的时间为12min45s，常规序列 检查时间为8min16s，比较两组间差异统 计学具有意义(p＜0.05)。结论 去金属伪 影序列检查技术能够显著改善图像的质 量，并减轻金属植入物的磁共振伪影，对 金属植入物患者的脊柱磁共振影响有十分 重要的意义。

Objective To explore to metal artifacts sequence thoracic vertebrae in patients with metal implants affect magnetic resonance images. Methods January 2014 -2015 period January hospital treated 25 cases of thoracolumbar spine (lumbar, thoracic) in patients with metallic implants, all patients with thoracolumbar conventional MRI sequences and go metal artifact scanning sequence, and using paired t test for two sequences check scanning time and image quality scores were analyzed and compared. Results Signal to the surrounding soft tissue image sequences metal artifacts loss mitigation metal implants, and the image is blurred and deformation sequence compared to conventional metal artifacts serious image sequences. General sequence of image quality score of (3.56±0.53) points to the metal artifacts sequence of image quality score of (4.22±0.67) points, compare the difference between the two groups was statistically significant (p<0.05). Lumbar metal artifacts sequence check time for 11min53s, conventional sequence check time for 9min16s, compare the difference between the two groups was statistically significant (p<0.05). Thoracic metal artifacts sequence to check the time for 12min45s, conventional sequence check time for 8min16s, compare the difference between the two groups was statistically significant (p<0.05). Conclusion To metal artifacts sequence checking technology can significantly improve image quality and reduce artifacts MRI metal implants, metal implants in patients with spinal MRI has a very significant impact.