Carpio Rodríguez, Ana MaríaRapún Banzo, María Luisa2023-06-202023-06-202012Carpio Rodríguez, A. M., y Rapún Banzo, M. L. «Hybrid topological derivative and gradient-based methods for electrical impedance tomography». Inverse Problems, vol. 28, n.o 9, septiembre de 2012, p. 095010. DOI.org (Crossref), https://doi.org/10.1088/0266-5611/28/9/095010.0266-561110.1088/0266-5611/28/9/095010https://hdl.handle.net/20.500.14352/42397We present a technique to reconstruct the electromagnetic properties of a medium or a set of objects buried inside it from boundary measurements when applying electric currents through a set of electrodes. The electromagnetic parameters may be recovered by means of a gradient method without a priori information on the background. The shape, location and size of objects, when present, are determined by a topological derivative-based iterative procedure. The combination of both strategies allows improved reconstructions of the objects and their properties, assuming a known background.engjournal articlehttps//doi.org/10.1088/0266-5611/28/9/095010http://iopscience.iop.org/0266-5611/28/9/095010restricted access537.8Boundary measurementsShape reconstructionInverse problemsLow-frequencyConductivityIdentificationPermittivityElectromagnetismo2202 Electromagnetismo