摘要
目的:研究脑静脉窦血栓(CVST)的影像特征,以期促进早期确诊。方法:报道13例CVST,着重分析其影像学特征。结果:13例CVST首次接受的影像检查均为脑CT平扫,12做了DSA检查,6例做了MR检查,均存在静脉窦血栓,其中至少10例存在多支皮层静脉末段阻塞;静脉窦高密度异常增宽、皮层静脉圆点征和索条征、散在性脑出血、难以解释的脑肿胀均为重要的CT平扫征象;静脉窦MR信号改变、增强扫描后血管腔充盈缺损、静脉性脑梗死均为重要的MRI征象;血管造影所见的静脉窦充盈缺损、血流中断、引流静脉末端缺失、静脉性充血均是可靠的诊断指征;而蛛网膜下腔出血、硬脑膜下血肿、静脉循环时间延长、异常代偿回流通道的出现等也有参考价值。结论:早期捕捉CT征象、正确采用多手段影像检查、综合对比分析影像发现,对于早期确诊CVST十分重要。
Objective： To study the imaging characteristics of cerebral venous sinus thrombosis for the early diagnosis.Method： The imaging characters were analyzed significantly in the 13 cases reported. Results： CT was performed firstly in all of the 13 cases in their initial stage. Then DSA was performed in 12 cases, MR in 8 cases. The venous sinus thrombosis was found in all the cases, in which the terminal portions of many cortical veins were occluded in 10 cases at least. There are some important CT characteristics in CVST, such as hyperdense widen of venous sinus, the cord sign and round spot sign of cortical veins, diffused cerebral hemorrhage, brain swelling without clear reasons explained. There were some significant findings of MRI, includ- ing abnormal signals in brain issue, the filling defect sign of venous vessel on enhanced scanning and venous infarction. The filling defect in venous sinus, the interruption of blood flow, terminal portion missing of drain veins and venous hyperemia from DSA are reliable indication of CVST. But other signs, such as subarachnoid hemorrhage, subdural hernatorns, the prolongation of venous circulation time, the appearance of abnormal compensated backstreaming aisle, have also their referrence value. Conclusion： It is very important for the early diagnosis of CVST to capture the early CT signs, apply various imaging investigations correctly and analyze imaging findings comparatively.
出处
《福州总医院学报》
2009年第1期23-26,F0004,共5页
Journal of Fuzhou General Hospital
