影像学检查在股骨头缺血性坏死中的诊断价值及早期征象分析
股骨头缺血性坏死；早期病变；X线；体层摄影术,X线计算机；磁共振成像,,],股骨头缺血性坏死；早期病变；X线；体层摄影术，X线计算机；磁共振成像,影像学检查在股骨头缺血性坏死中的诊断价值及早期征
[摘要] 目的 评价X线、CT与MRI对股骨头缺血性坏死(ANFH)的诊断价值并分析其早期征象。方法 对50例临床疑诊为ANFH的患者进行X线平片、CT与MRI检查，并且做X线平片、CT与MRI的对照观察，并与同期临床症状比较。结果 50例经X线检查诊断为ANFH 32例；经CT扫描诊断为ANFH 40例；所有病例均经磁共振扫描证实为ANFH 45例，其中10例为早期病变。统计结果表明，ANFH的X线、CT、MRI表现之间敏感性的差异有非常显著性(P<0.01)。MRI为最好，CT次之，X线平片最不敏感。结论 X线平片难以显示ANFH的早期表现，MRI不仅能发现其早期病变，且能反应病变的确切范围和程度，对早期治疗和预后具有积极意义。[关键词] 股骨头缺血性坏死；早期病变；X线；体层摄影术，X线计算机；磁共振成像
Imaging diagnosis of avascular necrosis of the femoral head
DONG Qiong-xiong，ZHENG Zhen-zhen，PEI Ren-quan.Department of CT Radiology,The Third Peoples Hospital,Shantou 515073,China
[Abstract] Objective To evaluate the diagnostic value of X-ray plain film and CT and MRI in ANFH and analyse the imaging features of early ANFH.Methods 50 cases were clinical suspected of ANFH,all of them were underwent rountine radiography,CT and MRI.The appearance presented by the 3 methods were compared,a comparative analysis between the imaging features and the clinical data was done in detail.Results Among 50 cases,32 cases were positive on X-ray examination and 40 cases were positive on CT.45 cases were positive on MRI.8 cases were positive the early sign of ANFH.The statistic results showed that there was remarkable interrelationship between the features of X-ray,CT and MRI of ANFH(P<0.01).Conclusion It is difficult for X-ray plain film to find out early sign of ANFH,MRI is able to provide useful information in confirming the early stage of ANFH,and is also significance in determining the extent,degree of the lesions,and early treatment as well as prediction of prognosis. ......
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