Algorithms for parametric images in MEIT systems.
In this work we show the algorithms developed to extract the Cole parameters from multi-frequency EIT. With these parameters it is possible to obtain information about various different tissues and their pathologies. The algorithms developed obtain the Cole-model parameters from the real and imaginary parts of impedance, or using only the real part, without problems of convergence. A study of the influence of noise is performed with simulations. We find a correct solution in all cases with signal to noise ratio in the data higher than 40 dB. Finally, we show parametric images of the human abdomen obtained with these algorithms.
Casas
O
O
Departament d'Enginyeria Electronica, Universitat Politecnica de Catalunya, Barcelona, Spain.
Bragós
R
R
Riu
P J
PJ
Rosell
J
J
D000005:Abdomen / Q000033:anatomy & histology / Q000502:physiology; D000465:Algorithms; D003198:Computer Simulation; D017097:Electric Impedance; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods / Q000706:statistics & numerical data; D008953:Models, Anatomic; D008954:Models, Biological; D014054:Tomography / Q000379:methods / Q000706:statistics & numerical data*