论文部分内容阅读
目的：分析颅底骨源性肿瘤的 Ｃ Ｔ 、 Ｍ Ｒ Ｉ 表现并与病理对照，探讨 Ｃ Ｔ 和 Ｍ Ｒ Ｉ 对该类疾病的诊断价值与限度。方法： 收集了经手术和病理证实的颅底骨源性肿瘤２３ 例（ 软骨肉瘤５ 例、软骨瘤２ 例、转移瘤３ 例、脊索瘤８ 例、骨巨细胞瘤２ 例、动脉瘤样骨囊肿１ 例、骨化性纤维瘤２ 例） ，全部病例均行 Ｃ Ｔ 和 Ｍ Ｒ Ｉ 检查（ 其中１１ 例行增强 Ｍ Ｒ Ｉ 检查，７ 例行增强 Ｃ Ｔ 检查） 。结果：大部分肿瘤边界清晰， Ｍ Ｒ Ｉ Ｔ１ Ｗ Ｉ 呈低或等信号， Ｔ２ Ｗ Ｉ 呈不均匀高信号，且 Ｔ１ Ｗ Ｉ 低信号区在 Ｔ２ Ｗ Ｉ 上随回波时间延长信号仍呈低信号而提示钙化。 Ｃ Ｔ 上显示不同程度骨质破坏及钙化。 Ｍ Ｒ Ｉ 显示斜坡、岩骨破坏较敏感。结论： Ｃ Ｔ 能准确显示骨质破坏情况及钙化程度， Ｍ Ｒ Ｉ 在显示病变的范围方面要优于 Ｃ Ｔ ，两者相结合是诊断颅底骨源性肿瘤的最佳影像学检查方法。
OBJECTIVE: To analyze the expression of C T, M R I in skull base tumor and to compare with the pathology, so as to investigate the diagnostic value and limit of C T and M R I in this kind of disease. Methods: Twenty-three cases of skull base bone tumors (5 cases of chondrosarcoma, 2 cases of chondroma, 3 cases of metastases, 8 cases of chordoma, 2 cases of giant cell tumor of bone, 1 cyst and 2 ossifying fibroma). All patients underwent C T and M R I examinations (11 patients had M R I and 7 patients had C T). Results: Most of the tumors had a clear boundary with low or equal signal at M R I T1 W I and high signal at T2 W I, and the low signal area at T1 W I remained low with increasing echo time on T2 W I Signal and prompt calcification. C T showed varying degrees of bone destruction and calcification. M R I show slopes, rock damage more sensitive. Conclusion: C T can accurately show the degree of bone destruction and calcification. M R I is better than C T in displaying the extent of lesions, and the combination of the two is the best imaging method for diagnosis of bone tumors of skull base.