Relationship between electrodes and current reach distance in EMI using bioequivalent phantom

Abstract

In this experiment, two agar phantoms (70 mm 180 mm) with electrical conductivity of 6.61 m/s (muscle) and 0.99 m/s (fat) were used to construct a two-layered model (10 mm fat layer) assuming biological tissues. As the distance D between the current electrodes (40-100 mm, 4 conditions), the potential electrodes were placed at the inner 10 mm of the current electrode. Z was measured under six conditions in which the phantom thickness x was varied from 10 mm to 60 mm at 10 mm intervals. Z for x at the distance D between the electrodes was approximated as the sum of the exponential functions and constants. X, where the estimated value of Z is 105% of this constant value, was defined as the distance to reach the current, L. As a result of this experiment, L showed a linear correlation with D.