REQUIREMENTS OF A MECHANICAL POSITIONING SYSTEM FOR BIOLOGICAL IMAGING USING MAGNETIC INDUCTION TOMOGRAPHY

Nuno B. Brás, P. A. F. Martins, Raul C. Martins, A. Cruz Serra

Abstract

Magnetic Induction Tomography (MIT) is an imaging technique that allows mapping the complex conductivity structure of a body by measuring the magnetic field generated by currents induced within the body. Typically, MIT systems are static since their sensing positions and the angular incidences of the main magnetic field do not change. Recently the authors from IT developed an experimental setup with movable coils and body to increase the number of measurements. In this paper, a new moving system of sensing coils and body plate is analysed and its importance is highlighted. The accuracy and the measurement requirements for the positioning setup are studied, namely the influence of the displacement error on the measured electromotive signal at the sensing coils for each position. Results from the implemented experimental system are reported and its overall importance is highlighted.

Keywords

magnetic induction tomography, eddy currents, angular measurements

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IMEKO-WC-2009-TC4-534.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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