摘要
目的:探讨骨梗死的影像学表现。材料和方法:对10例累及28处骨骼的骨梗死患者行X线、CT及MRI检查,将骨梗死分为早、中、晚期,分析其影像学特征。结果:病变主要累及股骨下段和胫骨上段,多双侧发病。骨梗死早、中期X线、CT表现为阴性和局部的骨质疏松及斑点状钙化,MRI表现为病变中心T1WI呈等或稍低信号,T2WI呈等或稍高信号,病灶边缘呈典型的地图样改变。晚期X线及CT呈不规则状、蜿蜒状骨质硬化,MRIT1WI及T2WI均呈低信号。结论:MRI检查是诊断早、中期骨梗死最有效的方法,优于X线平片和CT;在晚期,X线平片和CT、MRI均有特征性表现,三者相结合可提高诊断准确率。
Purpose： TO evaluate the imaging features of bone infarction. Materials and Methods： Radiography, CT and MRI were performed in 10 patients with 28 bone infarction,The bone infarction were classified into the early, the middle and later stages, the imaging characteristics were analysed. Results： It occurred on the low part of femur and the upper part of tibia in both side;In the early and middle stages,osteoporsis and punctate calcification could be seen on Plain film and CT scans,the center of infarction was manifested as iso-or slight low signal on T1WI and iso-or slight high-signal on T2WI, the surrounding part was map-shaped lesion, in the later stages the lesion characterize by irregular sclerosis and tortuons calcification on X-ray and CT,and by low-signal on T1WI and T2WI. Conclusion： MRI is the most effective way to find the bone infarction in the early and the middle stages,MRI is superior to plain film and CT,In later stage the lesion shows certain charateyistic signs on plain film CT or MRI, X-ray, CT and MRI should be combined in diagnosing bone infaraction.
出处
《中国医学影像学杂志》
CSCD
2008年第3期199-201,共3页
Chinese Journal of Medical Imaging
