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本文对CI组(29例),CH组(34例),健康人对照组(30例),同时进行了EEG、BEAM、TCD与CT的前瞻性对比研究。结果CI组和CH组EEG、BEAM异常率分别为96.5％和97.1％,而BEAM定侧定位率远远高于EEG。在CI组,BEAM出现异常早于CT,且异常率(96.5％)高于CT(93.1％)。说明脑功能障碍早于形态学改变。(δ+θ)/(α+β)比值,两组无差异。本文提出病、健侧频带功率差的百分比可作为BEAM一项观察指标。CH组病、健侧δ、θ频带功率均值差的百分比分别为48.58％和47.91％,高于CI组(29.05％和26.38％)。TCD异常率CI组(100％)和CH组(97.1％)两组均高,说明在脑卒中急性期TCD对颅内血流动力学改变很敏感,它虽不能定位定性,但通过动态观察,可了解脑血管功能状态、侧枝循环、颅内动脉开放程度等,对治疗前后疗效评价及预后有指导意义。
In this paper, the prospective comparative study of EEG, BEAM, TCD and CT was carried out in CI group (29 cases), CH group (34 cases) and healthy control group (30 cases). Results The abnormal rates of EEG and BEAM in CI group and CH group were 96.5% and 97.1%, respectively. However, the localization rate of BEAM was much higher than that of EEG. In CI group, BEAM was earlier than CT, and the abnormal rate (96.5%) was higher than that of CT (93.1%). Description of brain dysfunction earlier than the morphological changes. (δ + θ) / (α + β) ratio, no difference between the two groups. This article presents the disease, the percentage of healthy side band power difference can be used as a BEAM observation. The percentages of mean difference in power of CH group disease, contralateral δ and θ band were 48.58% and 47.91%, respectively, higher than that of CI group (29.05% and 26.38%). TCD abnormalities in both CI group (100%) and CH group (97.1%) were high in both groups, indicating that acute cerebral ischemia in TCD is very sensitive to intracranial hemodynamic changes, although it can not locate qualitative, but by dynamic observation, Can understand the cerebrovascular function status, collateral circulation, intracranial artery open degree, etc., before and after treatment efficacy evaluation and prognosis.