【摘要】 目的 评价MRI检查对距骨缺血坏死早期诊断及治疗方法选择的价值。方法 对已确诊的12例距骨缺血坏死的MRI表现进行回顾性分析。结果 本组12例均行MRI检查。4例距骨早期坏死,病灶呈不规则条带状异常信号,T₁WI呈低信号,T₂WI呈高信号,均伴有周围骨髓水肿;8例典型距骨坏死,即地图样表现,T₂WI病灶中间呈高信号,周边环绕低信号的硬化带。结论MRI对于距骨早期缺血坏死的诊断具有重要价值,并且可以准确评价其坏死程度,为临床治疗方案的选择提供客观依据。更多还原

【Abstract】 Objective To explore the applied value of MRI in diagnosis and clinical administration for avascular necrosis of talus.Methods MRI findings were reviewed in 12 patients with complaint of avascular necrosis of talus at a 0.35T MR machine.Results All cases underwent MRI scan.The early necrosis of talus in 4 cases were showed,the lesions appeared as irregular linear abnormal signals accompanied by surrounding bone marrow edema,the lesions were hypointense on T₁ WI and hyperintense on T₂ WI.The typical MRI signs showed map-like changes in 8 cases,the lesions were hyperintense in the center and hypointense in the periphery on T₂WI.Conclusion MRI is of important value for early diagnosis of avascular necrosis of talus,and can accurately evaluate the necrosis degree of the lesions,which may provide informations for clinical administration.更多还原