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  • Title: A finite element model of needle electrode spatial sensitivity.
    Author: Høyum P, Kalvøy H, Martinsen ØG, Grimnes S.
    Journal: Physiol Meas; 2010 Oct; 31(10):1369-79. PubMed ID: 20736490.
    Abstract:
    We used the finite element (FE) method to estimate the spatial sensitivity of a needle electrode for bioimpedance measurements. This current conducting needle with an insulated shaft was inserted in a saline solution and the current was measured at the neutral electrode. Model resistance and reactance were calculated and successfully compared with measurements on a laboratory model. The sensitivity field was described graphically based on these FE simulations.
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