下肢肌肉损伤的低场MRI表现

目的分析下肢肌肉损伤的低场MRI表现。方法回顾性分析临床证实的45例肌肉损伤的患者的低场MRI资料。结果拉伤16例,表现为肌腱交界处呈T1WI低信号T2WI高信号的线状或片状影;挫伤12例;表现为直接受伤部位水肿,肌肉体积增大呈T1WI低信号T2WI高信号;血肿10例,表现为肌肉内团块状病变,因时期不同可有不同的信号表现;急性骨筋膜室综合症4例,表现为受累肌肉高度水肿、肌间隔结构模糊,呈T1WI低信号T2WI高信号;慢性骨筋膜室综合征3例,表现为特定筋膜室间腔内累及骨骼肌全长2/3以上的T1WI低信号T2WI高信号区,内可见骨骼肌溶解液化信号。结论 MRI在下肢肌肉损伤中具有重要诊断意义。

Low Field Magnetic Resonance Imaging of Lower Limb Muscle Injury

Objective To analyze the imaging of lower limb muscle injury in low field MRI.Methods The low-field MRI data of 45 patients with muscle damage confirmed by clinic were analysed retrospectively.Results Strain in 16 cases,which performed low T1WI high T2WI signal at the junction of tendon;contusion in 12 cases,which performed the form of direct injuries edema,muscle volume increase in T1WI low signal of high T2WI signal;hematoma in 10 cases,which showed mass lesions within the muscle,due to different periods may have different signal performance;acute compartment syndrome in 4 cases,which performed T1WI low T2WI high signal of affected muscle edema and blur compartment structure;chronic compartment syndrome in 3 cases,which performed T1WI low signal T2WI high signal area of 2/3 above of skeletal muscle length in a specific compartment,the signal of soluble liquid in the muscle could be seen;fascial hernia 1 case,which exhibited the muscle protruding through the fascial defect and was obvious in muscle contraction.Conclusion MRI has an important significance in the diagnosis of lower limb muscle injury.