摘要
目的探讨骨梗死的影像学表现及其MRI特点。方法对8例累及22个骨骼的骨梗死患者行X线、CT和MRI检查,并进行比较分析。结果(1)病变主要累及股骨下段及胫骨上段,多双侧发病,可以累及其他骨骼。(2)X线片及CT表现为骨质疏松或环形、斑片状高密度影。(3)MRI表现为病变中心T1WI呈等或稍低信号、T2WI呈等或稍高信号,内信号不均;病灶边缘呈地图样改变,T2WI上分2层,内层为高信号带,外层为低信号带。结论骨梗死急性期、亚急性期MRI明显具有特征性,优于其他影像检查。
Objective To discuss the imaging and MRI feature of the bone infarction Method Radiograph, CT and MRI were performed in 8 cases with 22 bone infarction to analyse in contrast with the imaging. Result ①It occurred on the low part of femur and the upper part of tibia in both sides .② Osteoporosis and ring or patching of highdensity shadow could be seen on plain film and CT scan. ③The center of infarction was manifested as iso- or slight low-signal on T1WI and iso- or slight high-signal on TeWI ,the surrounding part was ＂map-shaped＂ lesions which were low-signal on T1WI and two layers on T2WI. Conclusion The imaging of the bone infarction shows characteristic signs on MRI and superior to the other imaging examination during acute and subacute stages
出处
《中国CT和MRI杂志》
2007年第1期46-47,共2页
Chinese Journal of CT and MRI
