Electronic instrumentation for a 3D electrical impedance tomography application
Calvo Hernando, Mario
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The thesis aims to present the electronic instrumentation required for an EIT application which aims to make an imaging reconstruction of living cells covered with blank hydrogel. Thus the accuracy of the impedance measurement along the frequency range will have a great importance. The experiments performed are made for a 2D EIT system which allows us to extract useful information for the development of the future 3D system. The thesis is divided into four parts: a theoretical study about the bioimpedance and the EIT, the measurement setup used during the course of the thesis and the possible alternatives, the presentation of the results obtained, discussion of results and the conclusion of the thesis. The HF2IS Impedance Spectroscopy (Zurich Instruments AG, Switzerland) is the measurement equipment used to perform four-terminal impedance measurements. The spectroscopy is located in the laboratory of the BioMediTech Group at FinMedi. A multiplexing system has been designed, consisting of four 16x1 channels multiplexers which will be controlled by the digital outputs of the spectroscopy. Besides, the electronic instrumentation required for the EIT system without the HF2IS spectroscope is presented as an aid to future stages of the project.