Direct 2-D Reconstructions of Conductivity and Permittivity From EIT Data on a Human Chest

Author(s)

Herrera, Claudia N. L. ^[1] ; Vallejo, Miguel F. M. ^[1] ; Mueller, Jennifer L. ^{[1, 2]} ; Lima, Raul G. ^[3]

Affiliation

^[1] Colorado State Univ, Dept Math, Ft Collins, CO 80521 - USA

^[2] Colorado State Univ, Sch Biomed Engn, Ft Collins, CO 80521 - USA

^[3] Univ Sao Paulo, Dept Mech Engn, BR-05508070 Sao Paulo - Brazil

• Document type: Journal article
• Source: IEEE TRANSACTIONS ON MEDICAL IMAGING; v. 34, n. 1, p. 267-274, JAN 2015.
• Web of Science Citations: 11

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. (AU)

• FAPESP's process: 08/08739-7 - A D-bar method for imaging admittivity in 2D by Electrical Impedance Tomography.
• Grantee: Claudia Natalia Lara Herrera
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 08/05951-5 - Full nonlinear 2D EIT D-bar reconstructions of Images for Electrical Impedance Tomography using the Method D-bar 2D
• Grantee: Miguel Fernando Montoya Vallejo
• Support Opportunities: Scholarships in Brazil - Doctorate