Uchida M
Department of Radiology, Kurume University School of Medicine.
Nihon Igaku Hoshasen Gakkai Zasshi. 1990 Jun 25;50(6):637-48.
MR imaging of 131 cases with pathologically confirmed primary bone and soft tissue tumors were studied. They included 44 bone tumors (25 benign tumors, 19 malignant tumors) and 87 soft tissue tumors (55 benign tumors, 32 malignant tumors). MR imaging was performed on 0.5T, superconductive magnet system. All tumors were evaluated with T1-weighted, T2-weighted and STIR images. In some cases, contrast enhanced MR imaging with Gd-DTPA was applied. MR imaging was proving to be a valuable technique in the evaluation of patients with primary bone and soft tissue tumors. MR imaging was superior to the other modalities in delineating the extent of the tumor and their relation to surrounding structures in all cases. However, plain radiography and CT were more useful for evaluation of calcification, ossification, cortical destruction and endosteal/periosteal reaction than MR imaging. Direct sagittal and coronal images from MR imaging added accurate assessment for the relation between the tumor and their adjacent structures. MR imaging was of limited value in distinguishing benign from malignant tumors with the demonstration of tumor structures only, especially soft tissue tumors. But in bone and soft tissue tumors which have specific morphologic features and intensity patterns, MR imaging was very useful for diagnosis.
对131例经病理证实的原发性骨与软组织肿瘤患者进行了磁共振成像（MR）研究。其中包括44例骨肿瘤（25例良性肿瘤，19例恶性肿瘤）和87例软组织肿瘤（55例良性肿瘤，32例恶性肿瘤）。MR成像采用0.5T超导磁体系统进行。所有肿瘤均进行了T1加权、T2加权和短TI反转恢复（STIR）序列成像评估。部分病例还应用了钆喷酸葡胺（Gd-DTPA）增强MR成像。结果表明，MR成像在原发性骨与软组织肿瘤患者的评估中是一项有价值的技术。在所有病例中，MR成像在描绘肿瘤范围及其与周围结构的关系方面优于其他检查方法。然而，在评估钙化、骨化、皮质破坏以及骨内膜/骨膜反应方面，X线平片和CT比MR成像更有用。MR成像的直接矢状位和冠状位图像为肿瘤与其相邻结构的关系提供了准确评估。仅通过显示肿瘤结构，MR成像在鉴别良性与恶性肿瘤方面价值有限，尤其是软组织肿瘤。但对于具有特定形态特征和信号强度模式的骨与软组织肿瘤，MR成像在诊断中非常有用。
