Electrode scanning system for electrical conductivity imaging

Abstract

To map out the change with respect to conductivity differences as in ElectricalConductivity Imaging Method, is the basic concept in this research study.Current injection / voltage sensing technique is utilized where the current is suppliedfrom a constant current source and the potential evoked by the current across theelectrodes are amplified and digitized for further processing using a image reconstructionalgorithm.Bipolar guarded electrode configuration is selected, and by using 32 electrodeelements, 16 guarded electrodes are formed in a cylindrical pattern. The electrode systemis embedded into a saline solution tank for simulating a conductivity medium.Image processing is realized by utilizing digital subtraction and summationmethods sequentially. A summation matrix is created to visualize the high impedancepoints.