The need for correct realistic geometry in the inverse EEG problem

被引：79

作者：

Huiskamp, G ^{[1
]}

Vroeijenstijn, M ^{[1
]}

van Dijk, R ^{[1
]}

Wieneke, G ^{[1
]}

van Huffelen, AC ^{[1
]}

机构：

[1] Univ Utrecht Hosp, Dept Clin Neurophysiol, NL-3508 GA Utrecht, Netherlands

来源：

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING | 1999年 / 46卷 / 11期

关键词：

boundary element method (BEM); dipole modeling; electroencephalogram (EEG); epilepsy surgery; realistic head model;

D O I：

10.1109/10.797987

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

For accurate electroencephalogram-based localization of mesial temporal and frontal sources correct modeling of skull shape and thickness is required. In a simulation study in which results for matched sets of computed tomography and magnetic resonance (MR) images are compared, it is found that errors arising from skull models based on smooth and inflated segmented MR images of the cortex are of the order of I cm, These errors are comparable to those found when overestimating or underestimating skull conductivity by a factor of two.

引用

页码：1281 / 1287

页数：7