摘要
目的分析颅脑内部硬膜下血肿的CT和MRI表现以提高诊断准确率。方法回顾分析55例经临床证实的内部硬膜下血肿的CT和MRI表现。结果 (1)55例内部硬膜下血肿病例中,大脑镰旁16例,小脑幕区39例。(2)CT表现:大脑镰旁硬膜下血肿多为单侧,内表面与大脑镰相贴、外表面呈弧形或波浪状高密度影;小脑幕区硬膜下血肿呈局限性片状高密度影或形态多样。各部血肿均边界清楚,不进入邻近脑沟和脑池。(3)MRI表现:一般各系列均呈高信号,FLAIR显示最清晰,以T1WI高信号为特征。横断面形态与CT类似,冠状面显示血肿范围更清楚。结论内部硬膜下血肿CT和MRI表现有特征性,MRI显示血肿形态及分布较CT更优越。
Objective To analyse the CT and MRI manifestations of internal subdural hematoma（ISDH） and to improve the accuracy of the diagnosis.Methods The CT and MRI characteristics of the 55 cases with clinically confirmed ISDH were reviewed.Results（1）Of the 55 cases,16 were beside the cerebral falx and 39 were about the cerebellar tentorium.（2） On CT imaging,ISDH beside the cerebral falx were mostly unilateral high density with interior surface sticking to the falx and arc or wave exterior,and that about the cerebellar tentorium were high density with sheet or various form.All ISDH had clear borders and didn＇t extend to the near sulus or cisterna.（3）On MRI imaging commonly,all ISDH were high signal in every series images.They were the most clearly appeared in FLAIR,and their high signal in T1WI were characteristic.ISDH had the similar form with CT in axial images,while the extents were showed more clearly in coronal ones.Conclusion There are characteristics of ISDH on CT and MRI imaging.MRI is superior to CT on displaying the form and distribution of ISDH.
出处
《罕少疾病杂志》
2011年第2期32-34,60,共4页
Journal of Rare and Uncommon Diseases
关键词
硬膜下血肿
体层摄影术
X线计算机
磁共振成像
Subdural hematoma
internal
Tomography
X-ray computed
Magnetic resonance imaging
