摘要
目的:探讨骨梗死的X线平片、CT和MRI影像特点及诊断价值。方法:9例骨梗死分别行X线平片、CT或MRI检查,并经临床随访或手术病理证实,分析总结其影像学特征。结果:9例患者共累及12个部位,股骨下段7处,胫骨上段3处,股骨颈1处,髂骨1处;X线平片、CT在病变不同时期表现为局部的骨质密度减低,环形、斑片状高密度影或不规则、迂曲状骨质硬化;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T1WI呈地图样改变,T2WI呈"双轨征"。结论:X线平片及CT在中晚期骨梗死方面具有诊断价值,MRI检查更有明显特征性,对早期病变诊断优于X线及CT检查。
Aim： To explore the imaging feature and diagnostic value of bone infarction on plain radiography,CT and MRI.Methods： Nine cases of the bone infarct were examined by radiography,CT or MRI,which were proved by clinicalmanifestation or surgicalpathology,were analysed characteristically with the imaging.Results： Twelve sites of the bone infarction in 9 cases were found,consisting of 7 in the distal femur,3 in the proximal tibia,1 in the femur neck,1 in the ilium.Partial low-density,ring or patching of high-density shadow could be seen on plain film and CT in different period of the pathological change.MRI,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＂ lesions which were low-signal on T1WI and two layers on T2WI.Conclusion：Plain radiography and CT can suffice for diagnosing the bone infarction in the middle and later stages.The imaging of the bone infarction shows characteristic signs on MRI and superior to the radiography and CT in the early stages.
出处
《暨南大学学报（自然科学与医学版）》
CAS
CSCD
北大核心
2011年第2期238-240,共3页
Journal of Jinan University(Natural Science & Medicine Edition)
基金
广东省医学科研项目(A2008536)
广州市医药卫生科技项目(201102A213159
2009-YB-058)
关键词
骨梗死
影像
诊断
bone infarction
imaging
diagnosis
