论文部分内容阅读
目的：探讨偶极子定位方法（DLM）对局限性痫样波定位的准确性。方法：①将一人工偶极子放置于用来模似人头的球形模型中，随意变动位置，并描记球表面电位，DLM定位与实际位置比较。②选择局限性痫样波发放者22例，头皮脑电图描记，DLM定位以三维图形显示偶极子的空间位置，其中的17例进行影象学检查，对二者结果进行对比分析。结果：①模型实验DLM定位与人工偶极子实际位置一致，但有向球中心靠拢趋势；②22例DLM限局性痫样波定位均以三维图形显示其空间位置，17例位于常规脑电图所描述的病变范围内，但更为局限。行影像学检查的17例中，7例具有局限性病灶，有3例DLM定位与之一致。结论：①偶极子定位软件适宜于局限性病灶定位；②对于痫样波DLM定位优于影像学定位，DLM作为常规脑电图的一种辅助手段可将局限性痫样波更准确地定位于某一三维空间位置。
OBJECTIVE: To investigate the accuracy of dipolar localization (DLM) localization of localized echocardiography. Methods: ① A artificial dipole was placed in a spherical model used to simulate the human head. The position of the artificial dipole was changed and the surface potential of the ball was traced. The DLM positioning was compared with the actual position. ② Select 22 cases of localized epileptiform sampler, scalp electroencephalography and DLM location to show the spatial location of the dipoles in three-dimensional pattern. Among them, 17 cases were examined by imaging, and the results of the two were compared. Results: (1) The model experiment DLM localization is consistent with the actual position of the artificial dipole, but the center of the ball is closer to the center. (2) The localization of DLM in 22 cases shows the spatial location in three dimensions and 17 cases in the conventional EEG Described within the scope of the lesion, but more limited. Of the 17 cases examined by imaging, 7 had localized lesions and 3 were consistent with DLM localization. Conclusions: ①Dipolar localization software is suitable for localization of localized lesion; ②For epileptiform DLM localization better than imaging localization, DLM can be used as a supplementary measure of conventional electroencephalography to locate localized epileptiform wave more accurately In a three-dimensional space position.