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KMID : 1137820090300040341
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의공학회지
2009 Volume.30 No. 4 p.341 ~ p.346
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Influences of Inter-electrode Distance on Electrogastrography Measurements
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Han Wan-Taek
Song In-Ho
Kim In-Young
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Abstract
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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.
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KEYWORD
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Electrogastrography, Surface electrodes, bipolar recording, surface potential, fat thickness
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