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目的 探讨病毒性脑炎 ,急性、亚急性发病早期的头颅CT扫描和脑电图检查特点。方法 脑电图(EEG)采用国际标准 10 / 2 0系统电极放置法描记 ,单、双极导联 ,平静 /常规描记 ,睁、闭眼及过度换气描记。结果 经临床及实验室诊断为病毒性脑炎 11例。其中 ,6例头颅CT扫描无异常者 ,脑电图检查均有轻度或中度异常改变。结论 病毒性脑炎发病早期无组织细胞学改变时 ,CT扫描无异常 ,而神经生物电改变早于组织形态学改变。所以 ,脑电图检查有助于早期诊断病毒性脑炎 ,对临床易被误诊或漏诊的病例 ,起到了较好的辅助诊断作用。
Objective To investigate the characteristics of brain encephalitis, craniocerebral CT scan and electroencephalogram in the early stage of acute and subacute onset of viral encephalitis. Methods Electroencephalography (EEG) was performed using the international standard 10/20 system electrode placement method, single and bipolar lead, calm / conventional tracing, open and closed eyes and hyperventilation tracing. Results Clinical and laboratory diagnosis of viral encephalitis in 11 cases. Among them, 6 patients had no abnormal CT scan, EEG examination had mild or moderate abnormal changes. Conclusion In the early onset of viral encephalitis, there is no abnormalities in CT scan when the changes of non-histocytology occur. The changes of neurobioma are earlier than that of histomorphology. Therefore, the EEG examination can help early diagnosis of viral encephalitis, the clinical misdiagnosis or missed cases, played a good auxiliary diagnosis.