【摘要】 作者对１４例经组织学证实的四肢原发性骨肿瘤的ＭＲＩ和Ｘ线平片检查结果做了比较。结果表明ＭＲＩ对骨肿瘤范围的确定优于Ｘ线平片，特别在软组织内。９例恶性骨肿瘤中８例ＭＲＩ显示的病变范围大于乎片所见；６例根据ＭＲＩ表现做出组织学诊断，７例经Ｘ线平片做出诊断。５例良生骨肿瘤４例分别经ＭＲＩ和Ｘ线平片做出诊断。ＭＲＩ对肿瘤的范围能提供更多信息，有助于肿瘤的分期，但平片不仅最为经济，对组织学确定也最为可靠。有些病例ＭＲＩ较平片更为准确地反映大体病理改变。更多还原

【Abstract】 AbstractAcomparison of MRI andplain radiograph was car-ried out in 14 patients with histologlcally proved primarytu mors of the extremities,The results showed that MRIwas superior to plain radiograph in depiction of the extentof the disease,espoclally in soft tissue,On MRI 8 of 9 ma-lignant tumors showed the extent of the lesion much larger than those on plain radiographs. The histological nature of the tumor was predicted in6of 9 malignant tumors on the basis of its MRI appear-ance and 7 cases were correctl v assessed with plain radic-graph. of the 5 benign tumors,4 were predicted by MRIand plain radiograph respectively. In spite of the fact that MRI provides much informa-tion about the extent of tumors that is helpful in the stag-ing of the tumor,the p1ain radiograph is not only the leastexponsive diagncatic examination but is also mort rellable in predicting the histologic nature of bone tumors. MRI is auseful tool for staging of tumors. In some cases MRI re-fiects the gross pathology more precisely plain radio-graph.更多还原