目的探讨股骨骨肉瘤CT与MRI的 影像学特征及其诊断价值。方法 选取我 院2014年11月-2017年10月股骨骨肉瘤患 者17例，均接受病理学检查、CT检查及 MRI检查。统计对比CT及MRI对股骨骨肉瘤 及股骨骨肉瘤相关征象(Codman三角、软 组织肿块、骨膜反应、瘤骨、骨质破坏) 诊断准确率，并分析本组患者病理、CT及 MRI表现。结果 MRI对股骨骨肉瘤诊断准 确率(94.12%)较CT(82.35%)高，但差异 无统计学意义(P＞0.05)；MRI对Codman 三角诊断准确率(41.18%)较CT(64.71%) 低，但无明显差异(P＞0.05)，MRI对软组 织肿块、骨膜反应、骨质破坏诊断准确 率(94.12%、88.24%、100.00%)较CT高(P ＜0.05)，MRI对瘤骨诊断准确率(58.82%) 较CT低(P＜0.05)。结论 采取CT及MRI可 对股骨骨肉瘤及其相关征象予以准确诊 断，对疾病的早期诊断和病变范围的显示 具有显著优势，可为临床及早制定针对性 干预方案提供一定参考依据。

Objective To investigate the imaging features and diagnostic value of CT and MRI in femoral osteosarcoma. Methods A total of 17 patients with femoral osteosarcoma in our hospital from November 2014 to October 2017 were selected for pathological examination, CT and MRI examination. The diagnostic accuracy of CT and MRI for femoral osteosarcoma and related features of femoral osteosarcoma (Codman triangle, soft tissue mass, periosteal reaction, tumor bone and bone destruction) was compared statistically. The pathological features, CT and MRI findings of the patients were analyzed. Results The diagnostic accuracy of MRI for femoral osteosarcoma (94.12%) was higher than that of CT (82.35%), but the there was no statistically difference(P＞0.05). The diagnostic accuracy of MRI for Codman triangle (41.18%) was lower than that of CT (64.71%), but there was insignificant difference between them(P＞0.05). The diagnostic accuracy of MRI for soft tissue mass, periosteal reaction and bone destruction (94.12%, 88.24%, 100%) was higher than that of CT(P＜0.05). The diagnostic accuracy of MRI for bone tumors (58.82%) was lower than that of CT(P＜0.05). Conclusion CT and MRI can be used for diagnosis of femoral osteosarcoma and its related signs, which has significant advantages in the early diagnosis and the determination of the scope of invasion. It can provide certain reference for the early clinical development of targeted intervention programs.