目的 探讨磁敏感加权成像 (SWI)对脑淋巴瘤及高级别胶质瘤的鉴 别诊断价值。方法 选取脑淋巴瘤患者 和高级别胶质瘤患者为研究对象，回顾 性分析其常规MRI及SWI表现并进行半定 量评分。结果 经秩合检验可知，脑淋巴 瘤与高级别胶质瘤的肿瘤内磁敏感信号 (ITSS)分级相比差异显著(P＜0.05)。 在 SWI 的上，脑内淋巴瘤和高级别胶质 瘤出血检出率相比差异不显著不具有统 计学意义(P＞0.05)。脑淋巴瘤患者共有 17个病灶，其中，血管评分为0分的病灶 有6个，血管评分为1分的病灶有9个，血 管评分为2分的病灶有1个，血管评分为3 分的病灶有1个；高级别胶质瘤患者共有 24个病灶，其中，血管评分为2分的病灶 有4个，血管评分为3分的病灶有20个。 经对比分析，脑淋巴瘤组与高级别胶质 瘤组血管评分差异显著(P＜0.05)。结论 SWI能够直观显示肿瘤内的磁敏感信号， 有助于脑淋巴瘤和高级别胶质瘤的鉴别 诊断。

Objective To discuss the value of SWI in the differential diagnosis of brain lymphoma and high-grade gliomas. Methods Patients with brain lymphoma and highgrade gliomas were selected as study subjects, and the routine MRI and SWI findings were retrospectively analyzed and semi quantitative scores were performed. Results By the rank test,we could know that the Tumor Magnetic Susceptibility signal(ITSS) grade of brain lymphoma was significantly different from that of high grade gliomas (P<0.05).In SWI,the detection rate of the brain lymphoma and high grade gliomas were not significantly different (P>0.05). There were 17 lesions in the patients with brain lymphoma.The vascular score was 0 and 6, the vascular score was 1 and 9, the vascular score was 2 and 1, and the vascular score was 3.There was a total of 24 lesions High-grade glioma patients,among them,there were 4 lesions with a vascular score of 2,and 20 of the lesions with a vascular score of 3.After a comparative analysis,the difference of vascular score of the patients with brain lymphoma group and high grade glioma group was significantly different (P<0.05). Conclusion SWI can directly display the magnetic susceptibility signal in the tumor,which is helpful for the differential diagnosis of brain lymphoma and high grade gliomas.