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目的探讨CT对产褥期脑静脉血栓(CVT)的诊断价值。方法对13例临床怀疑或随诊CVT的患者行CT检查。患者23～25岁,产后3～17天发病,主要临床表现为头痛、呕吐、视乳头水肿等高颅压症状,局灶性神经功能缺损,偏瘫、失语、抽搐发作及意识障碍等。结果CVT在CT上表现为脑水肿低密度区内小片状高密度出血灶,特征性变化为平扫时可见硬膜窦内异常高密度及脑实质静脉增高即“条索征”,强化后硬膜窦内呈“空三角征”。结论CT可准确地显示CVT的图像学改变,与MRI、MRV、DSA技术相结合,是诊断脑静脉病变可靠、有效和快捷的检查方法。
Objective To investigate the diagnostic value of CT in puerperal cerebral venous thrombosis (CVT). Methods Thirteen patients with clinically suspected or CVT were followed up for CT examination. Patients 23 to 25 years old, postpartum 3 to 17 days of onset, the main clinical manifestations of headache, vomiting, papilledema high intracranial pressure symptoms, focal neurological deficit, hemiplegia, aphasia, convulsions and disturbance of consciousness. Results CVT showed small pieces of high density hemorrhagic lesions in low density area of cerebral edema on CT. The characteristic changes were that the abnormal high density in the dural sinus and the elevation of cerebral parenchymal veins were characteristic of “ Duodenal sinus was ”empty triangle sign." Conclusion CT can accurately display the image changes of CVT. Combined with MRI, MRV and DSA techniques, CT is a reliable, effective and quick method for the diagnosis of cerebral venous lesions.