摘要
目的分析MRI对成人股骨头坏死早期诊断价值及影像学表现。方法收集我院51例股骨头坏死患者的临床资料。将MRI及MSCT的诊断结果进行讨论和分析,计算MRI及MSCT检查对股骨头坏死的诊断准确性、敏感性和特异性,总结其影像学表现。结果 MRI检查对股骨头坏死的诊断灵敏性、特异性和准确性明显高于MSCT检查(P<0.05)。MRI扫描各期T1WI以低信号为主,T2WI表现为高或稍高信号,Ⅰ期可见"双线征",Ⅱ期周围不均匀稍低信号环绕,Ⅲ期可见新月体形成,股骨头变形、皮质塌陷,Ⅳ期可见关节软骨被完全破坏,关节间隙变窄,股骨头显著塌陷变形。结论 MRI检查可清晰显示成人股骨头坏死的影像学特征,早期诊断准确率较高,可为临床诊治提供可靠的影像学依据。
Objective To analyze the early diagnostic value and imaging features of MRI for femoral head necrosis in adults.Methods The clinical data of 51 patients with femoral head necrosis were selected.The diagnosis results of MRI and MSCT were discussed and analyzed.The diagnostic accuracy,sensitivity and specificity of MRI and MSCT examination for femoral head necrosis were calculated.The imaging findings were summarized.Results The sensitivity,specificity and accu ra cy of MRI examination for femoral head necrosis were significantly higher than those of MSCT(P<0.05).In the MRI scan,T1 WI mainly showed low signal in each phase.T2 WI showed a high signal or slightly high and a "double line sign" appea red in stage Ⅰ.In stage Ⅱ,it was not evenly surrounded by a slightly lower signal.In stageⅢ, T2 WI showed the formation of crescents,deformation of the femoral head,and cortical collapse.In stage Ⅳ,the articular cartilage was destroyed,the joint space was narrowed,and the femoral head significantly collapsed and deformed.Conclusion MRI examination ca n clearly show the imaging characteristics of femoral head necrosis of adult,and the early diagnosis has a high accuracy rate,which can provide reliable imaging basis for clinical diagnosis and treatment.
作者
折胜利
何园
范成杰
贾晶
刘彦博
SHE Sheng-li;HE Yuan;FAN Cheng-jie;JIA Jing;LIU Yan-bo(Department of Orthopedics,Northwestern Polytechnical University,Xi'an 710072,Shaanxi Province,China;Department of Orthopedics,Xin'an Central Hospital,Xi'an 710048,Shaanxi Province,China)
出处
《中国CT和MRI杂志》
2021年第3期156-158,共3页
Chinese Journal of CT and MRI
基金
陕西省社发公关资助项目(2015SF025)。
关键词
磁共振成像
成人股骨头坏死
早期诊断
影像学表现
Magnetic Resonance Imaging
Femoral Head Necrosis in Adults
Early Diagnosis
Imaging Features
