强直性脊柱炎髋关节受累磁共振横断面扫描与冠状面扫描的对比分析

Comparative Analysis of Magnetic Resonance Cross-sectional Scan and Coronal Scan in Hip Joint of Ankylosing Spondylitis

目的比较强直性脊柱炎髋关节受累的磁共振横断面与冠状面两种扫描方法,以期找到最优的扫描方案。方法回顾性分析我院2016年1月~2018年1月147例已经确诊为强直性脊柱炎行髋关节横断面和冠状面扫描的患者,分别计算狭义的髋关节受累和不同附着点炎在横断面图像和冠状面图像上的检出率,并对检出率进行比较。结果 65例狭义的髋关节受累在横断面图像上检出率为90.77%,低于冠状面图像的检出率100%,差异有统计学意义(P<0.05)。97例耻骨联合附着点炎在横断面T2脂肪抑制序列图像上检出率为100%,高于在冠状面T2脂肪抑制序列图像上的检出率81.44%,差异统计学意义显著(P<0.01)。14例股骨大转子附着点炎在横断面及冠状面T2脂肪抑制序列图像上检出率均为100%。17例坐骨结节附着点炎在横断面T2脂肪抑制序列图像上检出率为41.18%,低于在冠状面T2脂肪抑制序列图像上的检出率100%,差异统计学意义显著(P<0.01)。结论髋关节冠状面扫描并辅以横断面T2脂肪抑制序列是针对强直性脊柱炎髋关节受累的最佳扫描方案。

Objective To compare the magnetic resonance cross-section and coronal plane scanning methods of hip joint involvement in ankylosing spondylitis in order to find the optimal scanning plan.Methods A retrospective analysis of 147 patients with ankylosing spondylitis who underwent hip cross-sectional and coronal scanning in our hospital from January 2016 to January 2018,the detection rates of hip joint involvement and different attachment point inflammation on cross-sectional images and coronal images were calculated separately,and the detection rates were compared.Results The detection rate of 65 cases of narrow hip joints was 90.77%,The detection rate of the image below the coronal plane was 100%,and the difference was statistically significant（ P〈0.05）.The detection rate of 97 cases of pubic symphysis adhesion point on the cross-sectional T2 fat suppression sequence was 100%,which was higher than that in the coronal T2 fat suppression sequence image（81.44%）,the difference was statistically significant（ P〈0.01）.The detection rate of 14 cases of femoral greater trochanter adhesion point on the cross-sectional and coronal T2 fat suppression sequence images were 100%.The detection rate of 17 cases of ischial tuberosity attachment inflammation on the cross-sectional T2 fat suppression sequence was 41.18%,the detection rate was lower than 100% on the coronal T2 fat suppression sequence image,and the difference was statistically significant（P〈0.01）.Conclusion The coronal scan of the hip combined with the cross-sectional T2 fat suppression sequence is the best scanning protocol for hip involvement in ankylosing spondylitis.