Subject(s)
Algorithms , Tomography/methods , Biomedical Engineering , Computer Simulation , Electric Conductivity , HumansABSTRACT
We compared the reconstruction performance of six different impedance tomographic reconstruction algorithms in a two-dimensional computer simulation. We found the modified Newton-Raphson method applied to the finite-element method performed the best. We show that this method can also make a better one step correction in less time than any of the other methods.
Subject(s)
Algorithms , Electric Conductivity , Tomography/methods , Computer Simulation , ElectrodesABSTRACT
We discuss some physical results from an impedance camera. We placed agar blocks of various resistivities and sizes in saline. We showed that when the agar block was small or close in resistivity to the saline solution, we were unable to reconstruct it. We attempted to reconstruct an image of a fist, but were unable to achieve this due to current flowing in the arm. We concluded that three-dimensional analysis may be needed, along with more sensitive reconstruction algorithms and measurements.
