Localization, correlation, and visualization of electroencephalographic surface electrodes and brain anatomy in epilepsy studies

Benjamin H. Brinkmann; Terence J. O'Brien; Richard A. Robb; Frank W. Sharbrough

doi:10.1117/12.274041

9 May 1997 Localization, correlation, and visualization of electroencephalographic surface electrodes and brain anatomy in epilepsy studies

Benjamin H. Brinkmann, Terence J. O'Brien, Richard A. Robb, Frank W. Sharbrough

Author Affiliations +

Proceedings Volume 3033, Medical Imaging 1997: Physiology and Function from Multidimensional Images; (1997) https://doi.org/10.1117/12.274041
Event: Medical Imaging 1997, 1997, Newport Beach, CA, United States

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.

Citation Download Citation

Benjamin H. Brinkmann, Terence J. O'Brien, Richard A. Robb, and Frank W. Sharbrough "Localization, correlation, and visualization of electroencephalographic surface electrodes and brain anatomy in epilepsy studies", Proc. SPIE 3033, Medical Imaging 1997: Physiology and Function from Multidimensional Images, (9 May 1997); https://doi.org/10.1117/12.274041

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