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目的 分析MRI对脑及脑膜转移瘤的检出率及在诊断中的作用。方法 115例经手术、病理证实的脑及脑膜转移瘤 ,男性 86例 ,女性 2 9例 ,年龄 1777岁。所有病例均经平扫及增强后扫描。结果 单纯脑转移 46例 (40 .0 % ) ;单纯脑膜转移 3 3例 (2 8.7% ) ;脑及脑膜同时受累共 3 6例 (3 1.3 % )。 115例患者增强后扫描均有不同程度的强化 ,脑转移侵及脑膜增强后可出现“靶征”或“鼠尾征”。结论 MRI是诊断脑及脑膜转移的可靠方法 ,增强MRI扫描对脑及脑膜转移的诊断具有重要价值。
Objective To analyze the detection rate of MRI and its role in the diagnosis of brain and meningeal metastases. Methods A total of 115 cases of brain and meningeal metastases were confirmed by surgery and pathology. There were 86 males and 29 females, aged 1777 years old. All cases were plain and enhanced scan. Results There were 46 cases (40.0%) with simple brain metastasis, 33 cases with simple meningoencephalic metastasis (28.7%), and 36 cases (33.3%) with brain and meningeal involvement simultaneously. All of the 115 patients underwent enhanced scan with different degrees of enhancement. “Target sign” or “rat tail sign” may appear after brain metastasis invasion and meningeal enhancement. Conclusion MRI is a reliable method for the diagnosis of brain and meningeal metastasis, and MRI enhancement is of great value in the diagnosis of brain and meningeal metastasis.