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目的:分析单发脑转移瘤(SBM)的MR影像特征。方法:回顾分析21例SBM的MR影像特征。结果:21例患者中,85.7%≥50岁,71.4%原发肿瘤为肺癌,85.7%病灶位于幕上,T1WI上主要呈低信号,T2WI上主要呈高信号,病灶直径>1.0cm时多存在明显瘤周水肿。结论:SBM具有特征性MR表现,进行对比增强扫描对于临床诊断和鉴别具有重要指导意义。
Objective: To analyze MR imaging features of single brain metastases (SBM). Methods: The MR imaging characteristics of 21 cases of SBM were retrospectively analyzed. Results: Of the 21 patients, 85.7% were over 50 years old and 71.4% of the primary tumors were lung cancer. 85.7% of the lesions were located on the supratentorial surface, with low signal on T1WI and high signal on T2WI. Clear peritumoral edema. Conclusion: SBM has characteristic MR manifestations. Contrast enhancement scanning is of great guiding significance for clinical diagnosis and differential diagnosis.