摘要
目的 探讨膝关节退行性病变MRI影像学特征,并分析MRI定量指标对膝关节退行性病变的诊断价值。方法 选择2019年2月~2023年4月湖北民族大学附属民大医院接诊的疑似膝关节退行性病变患者162例。患者检查前均先休息30 min后行MRI扫描,并对对内侧髁、外侧髁T1、T2、T2*值及髌骨脂肪含量(FF)值进行测量。在MRI扫描后1周内行膝关节镜检查,根据镜检结果是否符合膝关节退行性病变将患者分为观察组(n=93)与对照组(n=69)。比较2组各MRI指标,并以ROC曲线分析各指标单独检测与联合检测对膝关节退行性病变的诊断价值。结果 MRI常规扫描对关节软骨变性检出率仅为66.67%,半月板退变检出率为61.53%。关节边缘骨质增生、关节腔隙狭窄、关节积液检出率较高,分别为89.47%、92.86%、93.33%。观察组患者内侧髁T1值、内侧髁T2值、内侧髁T2*值、外侧髁T1值、外侧髁T2值、外侧髁T2*值及FF(%)均高于对照组,差异有统计学意义(P<0.05)。ROC分析结果显示内侧髁T1值、内侧髁T2值、内侧髁T2*值、外侧髁T1值、外侧髁T2值、外侧髁T2*值及FF(%)对膝关节退行性该病诊断截断值分别为1018.92、39.27、22.34、994.71、39.91、22.74、79.18%,曲线下面积分别为0.911、0.892、0.619、0.813、0.904、0.917、0.791(P<0.05)。结论 MRI常规扫描对关节软骨变性、半月板退变检出率较低,内侧髁T1值、内侧髁T2值、内侧髁T2*值、外侧髁T1值、外侧髁T2值、外侧髁T2*值及FF(%)均可用于膝关节退行性病变的诊断。
Objective To explore the changes in MRI imaging features of degenerative lesions of the knee joint and analyze the diagnostic value of MRI quantitative indicators for it.Methods A total of 162 patients with suspected degenerative lesions of the knee joint who were admitted to Minda Hospital,Hubei University for Nationalities from February 2019 to April 2023were selected.Before examination,patients rested for 30 min before undergoing MRI scans,and measured the T1,T2,T2*values of the medial and lateral condyles,as well as the patellar fat fraction(FF) values.Knee arthroscopy was performed within 1 week after MRI scanning,and the patients were divided into observation group(n=93) and control group(n=69)according to whether the microscopic findings were consistent with degenerative lesions of the knee joint.The MRI indexes of the two groups were compared,and the diagnostic value of each index for degenerative lesions of the knee joint was analyzed by ROC curve.Results The detection rate of articular cartilage degeneration by routine MRI scanning was only 66.67%,and the detection rate of meniscus degeneration was 61.53%.The detection rates of hyperostosis at the joint margin,joint cavity stenosis,and joint effusion were 89.47%,92.86%,and 93.33%,respectively.The medial condylar T1 value,medial condylar T2value,medial condylar T2* value,lateral condylar T1 value,lateral condylar T2 value,lateral condylar T2* value and FF(%) of the patients in the observation group were higher than those in the control group,and the difference was statistically significant(P<0.05).ROC analysis results showed that the cutoff values of medial condylar T1,medial condylar T2,medial condylar T2*,lateral condylar T1,lateral condylar T2,lateral condylar T2* and FF for the diagnosis of degenerative lesions of the knee joint were 1018.92,39.27,22.34,994.71,39.91,22.74,79.18%,respectively,and the AUCs were 0.911,0.892,0.619,0.813,0.904,0.917,0.791(P<0.05).Conclusion Routine MRI scanning has a low detection rate for articular cartilage degeneration
作者
李小军
黎学兵
陈钇地
姚鹏
杨早
胡春阳
龚艳
LI Xiaojun;LI Xuebing;CHEN Yidi;YAO Peng;YANG Zao;HU Chunyang;GONG Yan(Department of Radiology,Minda Hospital of Hubei Minzu University,Enshi 445099,China;Department of Radiology,West China Hospital,Sichuan University,Chengdu 610044,China)
出处
《分子影像学杂志》
2024年第3期277-281,共5页
Journal of Molecular Imaging
基金
四川省科技计划重点研发项目(2022YFS0071)。
