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Proceedings Paper

Localization, correlation, and visualization of electroencephalographic surface electrodes and brain anatomy in epilepsy studies
Author(s): Benjamin H. Brinkmann; Terence J. O'Brien; Richard A. Robb; Frank W. Sharbrough
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Paper Abstract

Advances in neuroimaging have enhanced the clinician's ability to localize the epileptogenic zone in focal epilepsy, but 20-50 percent of these cases still remain unlocalized. Many sophisticated modalities have been used to study epilepsy, but scalp electrode recorded electroencephalography is particularly useful due to its noninvasive nature and excellent temporal resolution. This study is aimed at specific locations of scalp electrode EEG information for correlation with anatomical structures in the brain. 3D position localizing devices commonly used in virtual reality systems are used to digitize the coordinates of scalp electrodes in a standard clinical configuration. The electrode coordinates are registered with a high- resolution MRI dataset using a robust surface matching algorithm. Volume rendering can then be used to visualize the electrodes and electrode potentials interpolated over the scalp. The accuracy of the coordinate registration is assessed quantitatively with a realistic head phantom.

Paper Details

Date Published: 9 May 1997
PDF: 11 pages
Proc. SPIE 3033, Medical Imaging 1997: Physiology and Function from Multidimensional Images, (9 May 1997); doi: 10.1117/12.274041
Show Author Affiliations
Benjamin H. Brinkmann, Mayo Clinic and Foundation (United States)
Terence J. O'Brien, Mayo Clinic and Foundation (Australia)
Richard A. Robb, Mayo Clinic and Foundation (United States)
Frank W. Sharbrough, Mayo Clinic and Foundation (United States)


Published in SPIE Proceedings Vol. 3033:
Medical Imaging 1997: Physiology and Function from Multidimensional Images
Eric A. Hoffman, Editor(s)

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