CT与MRI在恶性大脑中动脉梗死中的应用进展  

Application Progress of CT and MRI in Malignant Middle Cerebral Artery Infarction

作　　者：代兰兰 丁长青 李绍东 DAI Lan-lan;DING Chang-qing;LI Shao-dong(Department of Imaging,Fengxian Hospital Affiliated to Nantong University(Fengxian People's Hospital),Jiangsu 221700,China;Department of Imaging,Affiliated Hospital of Xuzhou Medical University,Jiangsu 221002,China)

机构地区：[1]南通大学附属丰县医院(丰县人民医院)影像科,江苏221700 [2]徐州医科大学附属医院影像科,江苏221002

出　　处：《影像技术》2022年第1期10-15,共6页Image Technology

基　　金：江苏省卫生科研基金项目(YG32014019)。

摘　　要：“恶性大脑中动脉梗死”为CT及MRI影像学上脑梗死范围>大脑中动脉供血区1/2或MRI的DWI序列图像提示脑梗死体积>145mL,形成明显的水肿、占位效应,导致神经功能的快速恶化,还可发生出血性转化及致命性脑疝,病死率极高。MMI临床表现重,可有多种高危因素,其影像学表现与其病理生理特征相关。CT与MRI目前已成为MMI诊断及预后评价的主要影像学诊断手段,可显示早期影像学特征征象并对其危险因素与疾病进展关系进行预测,对脑水肿及中线移位及出血性转化进行评价并对其预后进行预测及治疗后评价,影像学还可进行鉴别诊断。“Malignant middle cerebral artery infarction”(MMI)refers to the cerebral infarction area on CT and MRI imaging>1/2 of the blood supply area of the middle cerebral artery or the volume of cerebral infarction is>145 mL on MRI DWI sequence images.Obvious edema and space-occupying effect lead to rapid deterioration of nerve function,hemorrhagic transformation and fatal brain hernia-tion,and the mortality rate is extremely high.The clinical manifestations of MMI are severe and may have a variety of high-risk factors,and its imaging manifestations are related to its pathophysiological characteristics.CT and MRI have become the main imaging diagnostic methods for MMI diagnosis and prognostic evaluation.They can show early imaging characteristics and predict the relationship between risk factors and disease progression,and evaluate brain edema,midline shift,hemorrhagic transforma-tion,prediction of prognosis and post-treatment evaluation,and they can also be used for differential diagnosis.

关 键 词：恶性大脑中动脉梗死 影像学征象 体层摄影术 X线计算机 磁共振成像 

分 类 号：R445.2[医药卫生—影像医学与核医学] R445.3[医药卫生—诊断学]