摘要
目的:评价艾滋病脑弓形体虫脑炎影像学表现的诊断价值。方法:回顾分析17例艾滋病脑弓形体虫脑炎的影像学表现。结果:病变多为双侧多发,可单发,侵犯基底核12例,丘脑3例,皮髓质连接区1例;累及小脑及脑干1例;CT呈低密度,MRI呈长T1长T2信号;周围水肿效应明显;增强扫描,小环状、螺旋状或靶形增强12例;巨大环形增强1例;多发病灶15例,单发2例。结论:位于基底节区的多发小环状、螺旋状或靶形增强,高度提示脑弓形体虫脑炎。CT和MRI对弓形体虫脑炎是有效的诊断方法。MRI对病灶检出率明显高于CT。
Objective：To evaluate the image manifestions of toxoplasmosis encephalitis in patients with aquired immune deficiency syndrome （AIDS）. Methods：The image characteristics of toxoplasmosis encephalitis were retrospectively analysed in 17 patients with AIDS. Results：The images were mostly present with multiple lesions at bilateral and, also, with single lesions, which included 12 cases in basal ganglia, 3 cases in thalamus, 1 case in bilateral cerebral hemispheres near the corticomedullary junction, and 1 case in small cerebral with basis ponts. The lesions were hypodensity in CT and high T1 high T2 signal in MRI, with marked peripheral edema effect. After the admistration of contrast agent, the images showed small ring or twist and target enhancement in 12 eases, large ring enhancement in 1 case, multiple focus in 15 cases, and single focus in 2 eases. Conclusion：The appearance of the multiple small ring, twist and target enhancement in the basal ganglion am highly suggestive of toxoplasma encephalitis. Both CT and MR/am efcetive methods for the diagnosis of toxoplasmosis encephalitis. With respect to detecting the lesions, MRI is superior to CT.
出处
《医学影像学杂志》
2008年第10期1089-1091,共3页
Journal of Medical Imaging
基金
科研基金项目<艾滋病影像学诊断与尸体病理解剖对比研究>编号:2006S0041
关键词
艾滋病
弓形体虫脑炎
影像诊断
Aquired immune deficiency syndrome
Toxoplasmosis encephalitis
Image diagnosis
