糖尿病患者肌肉梗死的MRI诊断

目的 探讨糖尿病性肌肉梗死（DMI）的MRI表现。资料与方法 对3例行MRI和彩超检查，临床诊断DMI的患者进行回顾性分析。3例均为男性，平均年龄63．7岁，平均糖尿病病程为7．3年，所有患者均单一肢体发病。结果 MRI示受累肌肉明显肿胀，体积增大，T1WI信号减低，T2WI信号增高；可显示部分脂肪间隔消失、筋膜下积液等征象，皮下组织水肿。病变在T2WI上最敏感。结论 糖尿病伴随突发下肢肌肉肿胀疼痛，MRI示受累肌肉弥漫肿胀、水肿即可提示本病的诊断。

MR Diagnosis of Diabetic Muscle Infarction

Objective To discuss the MRI findings of diabetic muscle infarction (DMI).Materials and Methods The MR findings of 3 patients with diabetic muscle infarction were reviewed retrospectively. Of the 3 patients, duration of diabetic mellitus 7.3 years. All patients were men, the mean age was 63.7years, all patients had unilateral involvement.Results Diffuse enlargement of involved muscle with hypointensity on T_1WI, hyperintensity on T_2WI was depicted by MRI, partial loss of normal fatty, subfascial fluid and subcutaneous of edema were also shown on MR. MR T_2 weighted imaging was sensitive in depicting lesions.Conclusion Diabetic muscle infarction is suggested in patients of diabetic with sudden onset of severe pain in the thigh or calf muscles, MR findings are diffuse edema and swelling of multiple thigh and calf muscles.