艾滋病继发弓形虫脑炎的MRI特征  

Characteristics of MRI in AIDS patients complicated with toxoplasmic encephalitis

作　　者：江羽鸣 谭长连[2] 

机构地区：[1]广西壮族自治区蒙山县人民医院放射科,广西蒙山546799 [2]中南大学湘雅附二医院放射科,湖南长沙410011

出　　处：《中国现代医学杂志》2015年第15期96-99,共4页China Journal of Modern Medicine

摘　　要：目的探讨艾滋病继发弓形虫脑炎的特征性MRI特征。方法分析16例临床确诊为艾滋病(AIDS)合并弓形虫脑炎的MRI图像。结果本组15例病灶多发,1例单发;表现为病变区T1WⅠ为中等偏低的斑片状,团块状信号。T2WⅠ序列多表现为高信号,可见低信号环,周围占位效应明显,可见水肿带。增强后病灶呈结节状,环状,连环状强化。16例病例经抗弓形体药物治疗,症状均有好转,6例复查MRI病灶缩小。结论AIDS合并弓形体脑炎具有独特的影像学特征,MRI平扫及增强扫描对本病的诊断具有重要价值。[Objective ] To discuss the characteristics of magnetic resonance imaging （MRI） in AIDS patients complicated with toxoplasmic encephalitis. [Methods] The clinical and imaging data of 16 AIDS patients compli- cated with toxoplasmic encephalitis were retrospectively analyzed. [Results] Muhiple lesions appeared in 15 pa- tients, isolated lesion appeared in 1 patient. The lesions in all the cases were displayed as iso-low signal intensity on T1W I and hyperintensity on T2W I . There were capsule-like rims with iso-slightly lower intensity on T2W I and marked peripheral edema effect. All the lesions showed rim or multi-rim enhancement in MRI. The anti-toxoplasma treatment was effective for all the patients. [ Conclusions ] AIDS patients complicated with toxoplasmic encephalitis have curtain imaging characteristics in MRI, and MRI has an important value in its diagnosis.

关 键 词：获得性免疫缺陷综合征 弓形体脑病 磁共振成像 

分 类 号：R445.2[医药卫生—影像医学与核医学]