Title :
Direct 2-D Reconstructions of Conductivity and Permittivity From EIT Data on a Human Chest
Author :
Herrera, Claudia N. L. ; Vallejo, Miguel F. M. ; Mueller, Jennifer L. ; Lima, Raul G.
Author_Institution :
Dept. of Math., Colorado State Univ., Fort Collins, CO, USA
Abstract :
A novel direct D-bar reconstruction algorithm is presented for reconstructing a complex conductivity distribution from 2-D EIT data. The method is applied to simulated data and archival human chest data. Permittivity reconstructions with the aforementioned method and conductivity reconstructions with the previously existing nonlinear D-bar method for real-valued conductivities depicting ventilation and perfusion in the human chest are presented. This constitutes the first fully nonlinear D-bar reconstructions of human chest data and the first D-bar permittivity reconstructions of experimental data. The results of the human chest data reconstructions are compared on a circular domain versus a chest-shaped domain.
Keywords :
bioelectric potentials; electric impedance imaging; image reconstruction; medical image processing; permittivity; 2D EIT data; D-bar permittivity reconstructions; archival human chest data; chest-shaped domain; circular domain; complex conductivity distribution; direct 2D reconstructions; novel direct D-bar reconstruction algorithm; perfusion; permittivity reconstructions; real-valued conductivities; simulated data; Approximation methods; Conductivity; Electrodes; Image reconstruction; Permittivity; Scattering; Transforms; D-bar method; electrical impedance tomography (EIT); perfusion; reconstruction algorithm; scattering transform; ventilation;
Journal_Title :
Medical Imaging, IEEE Transactions on
DOI :
10.1109/TMI.2014.2354333
