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http://dx.doi.org/10.9718/JBER.2009.30.4.341

Influences of Inter-electrode Distance on Electrogastrography Measurements  

Han, Wan-Taek (Department of Biomedical Engineering, Hanyang University)
Song, In-Ho (Department of Biomedical Engineering, Hanyang University)
Kim, In-Young (Department of Biomedical Engineering, Hanyang University)
Publication Information
Journal of Biomedical Engineering Research / v.30, no.4, 2009 , pp. 341-346 More about this Journal
Abstract
Cutaneous electrogastrography is the measurement of electrical activity of the stomach on the abdominal surface. The validity of cutaneous electrogastrography is dependent upon the quality of the recording technique. The locations of electrodes are an important issue. We examined the influences of the inter-electrode distance of bipolar leads on electrogastrography measurements. The sensitivity distributions of EGG leads were calculated based on a 2D body fat model and evaluated according to the region of interest sensitivity ratio (ROISR). We simulated the ROISR of the inter-electrode distance in relation to various body fat thicknesses. The distance between the electrodes was proportional to the distance between the ROI and the surface of the abdomen. The results imply that inter-electrode distance can be applied in electrogastrography according to human body fat thickness.
Keywords
Electrogastrography; Surface electrodes; bipolar recording; surface potential; fat thickness;
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