颅内环形强化病变的MRI特征

目的探讨颅内环形强化病变的MRI表现，认识其影像学特征。方法回顾性分析32例颅内MRI上环形强化病例，所有病例均经手术、病理或临床治疗证实。结果32例颅内环形强化病变中，胶质母细胞瘤12例（37．50％），转移性肿瘤10例（31．25％），脑脓肿5例（15．62％），颅咽管瘤2例（6．25％），结核性肉芽肿1例（3．13％），脑囊虫病1例（3．13％），多发性硬化1例（3．13％）。肿瘤性环形强化表现为厚壁、形态不规则、不光滑；而非肿瘤性环形强化表现为形态规则、光滑、壁厚薄较为均匀。结论颅内环形强化病变的MRI表现具有特征性，可为诊断提供重要依据。

MRI Findings of Intracranial Ring Enhanced Lesions

Objective To study and analysis the MRI characteristics of common intracranial ring enhanced lesions.Methods MRI studies of 32 cases intracranial ring enhanced lesions were reviewed retrospectively,all cases were confirmed by surgery or pathology and anti-inflammatory treatment.Results Among 32 cases of Intracraninal ring enhaneed lesions included 12 glioblastomas,10 metastases,5 brain abscesses,2 craniophrayngiomas,1 tuberculosis granuloma,1 neurocysticercose,1 multiple sclerosis.On the whole,the malignant tumors displayed obviously heterogeneous thickness of the walls,especially the inner walls were uneven and coarse,While the non-tumor lesions demonstrated,regular shapers,smooth inner walls and even thickness of the walls.Conclusion Intracranial ring enhanced lesions has a specific MRI finding and can supply important diagnostic value.