title: Direct 2-D reconstructions of conductivity and permittivity from EIT data on a human chest.
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.
authors.forename: Claudia N L
authors.initials: CN
authors.lastname: Herrera
authors.forename: Miguel F M
authors.initials: MF
authors.lastname: Vallejo
authors.forename: Jennifer L
authors.initials: JL
authors.lastname: Mueller
authors.forename: Raul G
authors.initials: RG
authors.lastname: Lima
mesh_terms: D000328:Adult; D003198:Computer Simulation; D017097:Electric Impedance; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D008297:Male; D019047:Phantoms, Imaging; D013909:Thorax / Q000502:physiology*; D014054:Tomography / Q000379:methods*