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本文227例经手术和病理证实的颅内肿瘤中,幕上肿瘤脑电图160例,除1例误诊为正常外,余均为不正常脑电图.其中局灶性慢波122例(76.2%),患侧慢波18例(11.2%),即140例(87.4%)有定位定侧诊断意义.19例为弥散性异常,而其中18例为中线深部肿瘤.67例颅后凹肿瘤脑电图,除18例桥小脑角肿瘤中的11例正常外,余56例均为广泛不正常.这说明半球肿瘤脑电图多为局灶性慢波,而弥散性慢波以颅后凹或中线深位肿瘤为主.桥脑小脑角肿瘤脑电图50%以上为正常.
In this paper, 227 cases of intracranial tumors confirmed by surgery and pathology, supratentorial tumor EEG 160 cases, except one case misdiagnosed as normal, the remaining were abnormal EEG, of which 122 cases of focal slow wave (76.2 %), Ipsilateral slow wave in 18 cases (11.2%), that is, 140 cases (87.4%) have diagnostic significance of positioning side, 19 cases of diffuse abnormalities, of which 18 cases were midline deep tumors .67 cases of posterior concave tumors EEG, in addition to 18 cases of cerebellopontine angle of cerebellum in 11 cases of normal, more than 56 cases were widely abnormal.This shows that most of the hemispheric tumor EEG mostly focal slow wave, and diffuse slow wave in the skull Concave or midline deep tumors mainly pons cerebellar angle tumor more than 50% of the normal EEG.