弥漫性脑轴索损伤的影像学评价  

作　　者：张文清 胡宴宾 符水 

机构地区：[1]深圳市宝安区观澜人民医院放射科,518110

出　　处：《当代医学》2011年第11期76-77,共2页Contemporary Medicine

摘　　要：目的研究弥漫性脑轴索损伤(DAI)的影像学表现,评价CT与MRI在临床诊断脑弥漫性轴索损伤中的作用。方法回顾性分析36例DAI患者的MRI及CT表现,患者均于伤后2～72h内行CT与MRI检查。结果 CT影像:其中16例CT结果阴性,余20例表现为弥漫性脑组织肿胀,皮层下及脑组织深部小出血灶,中线无明显移位;MRI影像:所有患者结果均阳性,呈弥漫性脑组织肿胀,多为非出血性单发或多发脑白质小病灶损伤,胼胝体和脑干病灶多见于重度颅脑损伤。36例患者行头颅MRI检出病灶数(143个)显著高于CT检出的病灶数(24个)(P<0.05)。结论头颅CT或MRI为临床诊断DAI提供可靠的影像学支持,且MRI诊断价值优于CT。Objective To assess value of MRI and CT in diagnosis on diffuse axonal injury（DAI） by analyzing manifestations on their images.Methods 36 cases of DAI that had undergone MRI and CT within 2～72h after onset were retrospectively analyzed.Results CT showed diffuse cerebral swelling,single or multiple focal lesionsin white matter of brain;MRI showed diffuse cerebral swelling,most lesions were non-hemorrhagic and Lesions in brainstem and corpus callosum occurred in severe damaged cases.Of the 36 cases,MRI found out 143 lesions and CT told 24（P0.05）.Conclusion CT and MRI areable to provide imaging in formation for diagnosis of DAI,MRI is superior to CT in diagnosing DAI.

关 键 词：弥漫性轴索损伤(DAI) 脑 CT MRI 

分 类 号：R651.15[医药卫生—外科学]