Title :
Electrical impedance tomography reconstruction through Simulated Annealing with incomplete evaluation of the objective function
Author :
de Castro Martins, Thiago ; De Camargo, Erick Dario León Bueno ; Lima, Raul Gonzalez ; Amato, Marcelo Brito Passos ; de Sales Guerra Tsuzuki, Marcos
Author_Institution :
Comput. Geometry Lab., Sao Paulo Univ., Sao Paulo, Brazil
fDate :
Aug. 30 2011-Sept. 3 2011
Abstract :
The EIT reconstruction problem is approached as an optimization problem where the difference between a simulated impedance domain and the observed one is minimized. This optimization problem is often solved by Simulated Annealing (SA), but at a large computational cost due to the expensive evaluation process of the objective function. We propose here, a variation of SA applied to EIT where the objective function is evaluated only partially, while ensuring upper boundaries on the deviation on the behavior of the modified SA. The reconstruction method is evaluated with simulated and experimental data.
Keywords :
electric impedance imaging; image reconstruction; medical image processing; simulated annealing; tomography; EIT reconstruction problem; electrical impedance tomography reconstruction; expensive evaluation process; objective function incomplete evaluation; optimization problem; reconstruction method; simulated annealing; simulated impedance domain; Conductivity; Electric potential; Electrodes; Finite element methods; Image reconstruction; Impedance; Tomography; Algorithms; Computer Simulation; Electric Impedance; Electrodes; Electrophysiology; Equipment Design; Finite Element Analysis; Humans; Image Processing, Computer-Assisted; Models, Statistical; Phantoms, Imaging; Reproducibility of Results; Temperature;
Conference_Titel :
Engineering in Medicine and Biology Society, EMBC, 2011 Annual International Conference of the IEEE
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-4121-1
Electronic_ISBN :
1557-170X
DOI :
10.1109/IEMBS.2011.6091778