Adaptive techniques in electrical impedance tomography reconstruction.
We present an adaptive algorithm for solving the inverse problem in electrical impedance tomography. To strike a balance between the accuracy of the reconstructed images and the computational efficiency of the forward and inverse solvers, we propose to combine an adaptive mesh refinement technique with the adaptive Kaczmarz method. The iterative algorithm adaptively generates the optimal current patterns and a locally-refined mesh given the conductivity estimate and solves for the unknown conductivity distribution with the block Kaczmarz update step. Simulation and experimental results with numerical analysis demonstrate the accuracy and the efficiency of the proposed algorithm.
Department of Electrical, Computer, and Systems Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA.
Taoran
T
Li
David
D
Isaacson
Jonathan C
JC
Newell
Gary J
GJ
Saulnier
D000465:Algorithms; D017097:Electric Impedance; D006321:Heart / Q000033:anatomy & histology; D007091:Image Processing, Computer-Assisted; D008168:Lung / Q000033:anatomy & histology; D019047:Phantoms, Imaging; D014054:Tomography