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目的分析小脑膜瘤CT、MRI平扫及MRI增强扫描图像表现特点及应用价值。方法对既往收治的9例CT、MRI诊断,并经手术病理证实小脑膜瘤患者病历资料进行回顾性分析。结果Ⅰ级8例,其中上皮型3例、纤维型2例、过渡型2例、砂粒体型1例,Ⅱ级透明细胞型1例;T1等信号7例,稍低信号2例,T2等信号4例,混杂信号2例,低信号2例,稍高信号1例,4例水肿、3例挤压征,增强扫描不同程度增强,脑膜尾征2例(纤维型),平扫未发现肿瘤4例;砂粒体型、纤维型、透明细胞型表现特点呈现明显差异。结论 CT、MRI诊断小脑膜瘤并不困难,但CT、MRI平扫易出现漏诊,MRI增强扫描有助于发现小病灶、多发病灶,CT扫描无异常也不应掉以轻心,及时换MRI诊断,必要时行增强扫描,联合扫描重点在于关注有无水肿、占位效应、脑膜尾征,寻找特殊图像。
Objective To analyze the characteristic and application value of CT, MRI plain scan and MRI enhanced scan of cerebellum. Methods A retrospective analysis was made on the 9 cases of CT and MRI diagnosed previously and the histopathological examination of the patients with meningioma. Results There were 8 cases in grade Ⅰ, including 3 cases of epithelial type, 2 cases of fibroids, 2 cases of transitional type, 1 case of sand body type and 1 case of grade Ⅱ clear cell type. There were 7 cases of T1, 2 cases of low signal and T2 4 cases, mixed signal in 2 cases, low signal in 2 cases, slightly higher signal in 1 case, 4 cases of edema, 3 cases of compression sign, enhanced scan enhanced to varying degrees, 2 cases of meningeal tail sign (fibrosis) 4 cases; sand body size, fiber type, clear cell type showed significant differences in characteristics. Conclusion CT, MRI diagnosis of meningioma is not difficult, but CT, MRI scan easy to missed diagnosis, MRI enhanced scan will help identify small lesions, multiple lesions, CT scan without exception should not be taken lightly and timely diagnosis of MRI, necessary When the line enhanced scan, the focus of joint scanning with or without attention to edema, mass effect, meningeal tail signs, looking for special images.