脑血吸虫性肉芽肿的影像征象分析  

The analysis of imaging signs of brain schistosomiasis granuloma

作　　者：欧阳毅鸽 李炳华 齐绍林 雷铁军 

机构地区：[1]湖南省津市市人民医院CT&MRI室,湖南津市415400

出　　处：《中国医药导报》2009年第5期14-15,共2页China Medical Herald

摘　　要：目的:通过对脑血吸虫性肉芽肿的CT和MRI影像征象进行分析,探讨脑血吸虫性肉芽肿的CT和MRI特征及其价值。方法:回顾性分析经手术病理及临床证实的脑血吸虫性肉芽肿20例,采用GE公司生产的Hispead Dual螺旋CT机及XGY0.3T开放式永磁型MRI仪,分别进行平扫及增强扫描。结果:幕上大脑17例,幕下小脑3例。CT平扫病变呈等密度或稍高密度,MRI平扫T1WI大多呈等或稍低信号,T2WI呈高信号但低于脑脊液信号,液体衰减反转恢复序列呈稍高信号。CT和MRI增强表现为:脑皮质或皮层下区多发或单发大小不等的强化结节,呈簇状聚集成团。结论:脑血吸虫性肉芽肿的CT和MRI表现具有特征性,是临床诊断脑血吸虫性肉芽肿最有价值的检查手段。Objective： To discuss CT and MRI characteristics of brain schistosomiasis granuloma and their clinical values by analyzing the imaging signs of brain schistosomiasis granuloma. Methods： 20 cases of brain schistosomiasis granuloma confirmed by operation and pathology and clinic diagnosis were retrospectively analyzed. Plain and enhanced CT were performed in all patients by the Hispead Dual scanner and XGY Signa profile 0.3 Tesla open scanner produced by GE company. Results： 17 cases were observed lesions located in supratentorial region and 3 cases were observed in infratentorial region. The nodules were isodense or slight hyperdense on CT plain scan, isodense or shght hypodense on T1WI, hyperdense on T2WI, slight hyperdense on FLAIR. CT and MRI enhancement presented as： multiple or single enhanced nodules were shown at the cortical or subcortical area, distributed throughout the mass. Conclusion： The CT and MRI appearance of brain schistosomiasis granuloma is characteristic, and it is the most valuable tool to diagnose it.

关 键 词：血吸虫病 肉芽肿 脑 磁共振成像 体层摄影术 X线计算机 

分 类 号：R532.21[医药卫生—内科学]