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目的：以关节镜为标准，比较多序列MRI对髌股关节软骨退变的诊断价值。材料与方法：48个膝关节行关节镜检查及3D-Volume-FFE-T1WI矢状位、SE-T1WI横断位、FFE-T1WI横断位扫描。3D-Volume-FFE-T1WI矢状位行多平面重建（MPR）处理。10例无症状志愿者仅行MRI扫描。MRI图像每个髌股关节分内、外侧髌骨面、股骨滑车面与关节镜图像逐一对照分析。统计各序列诊断软骨病变的敏感性、特异性。结果：关节镜下发现102个病变软骨面，3D-Volume-T1WI敏感性、特异性高于SE-T1WI（P＜0.01）。3D-Volume-FFE-T1WI对软骨病变的分级和关节镜分级间有显著正相关性（P＜0．01）。结论：3D-Volume-FFE-T1WI结合MPR评价髌股关节软骨退变明显优于SE-T1WI、FFE-T1WI。关节镜和MRI评价关节软骨有很好的相关性、互补性。
Objective: To compare the diagnostic value of multi-sequence MRI in the diagnosis of patellofemoral articular cartilage degeneration. MATERIAL AND METHODS: Forty-eight knees underwent arthroscopy, 3D-Volume-FFE-T1WI sagittal, SE-T1WI transection and FFE-T1WI transection. 3D-Volume-FFE-T1WI sagittal line multiplanar reconstruction (MPR) processing. Ten asymptomatic volunteers underwent MRI scans only. MRI image of each patellofemoral joint points, the lateral patella, femoral skull surface and arthroscopy one by one control analysis. Statistical sequence of diagnosis of cartilage lesions sensitivity, specificity. Results: There were 102 cartilage lesions under arthroscopy. The sensitivity and specificity of 3D-Volume-T1WI were higher than those of SE-T1WI (P <0.01). There was a significant positive correlation between 3D-Volume-FFE-T1WI classification of cartilage lesions and arthroscopic grading (P <0.01). Conclusion: 3D-Volume-FFE-T1WI combined with MPR evaluation of patellofemoral joint cartilage degeneration was significantly better than the SE-T1WI, FFE-T1WI. Arthroscopy and MRI evaluation of articular cartilage has a good correlation, complementarity.