2014-04-24In this paper, electrical impedance spectroscopy (EIS) analysis was employed to evaluate the dielectric property of breast tissues. The complex impedance was recorded by a bio-impedance meter in the frequency range of 3 kHz to 1000 kHz. Non-linear Least squares regression was implemented to fit the measured data into Cole-Cole model. It was observed that significant differences existed between breast cancer and benign tissues.
2014-04-25An ℓ1 norm reconstruction algorithm which has the merits of reducing the sensitivity to data outliers and avoiding edge blurring is applied in this paper to solve a 3- D EIT problem. The iterative imaging method allows flexible choice of norms by simply choosing different norm value. A cluster analysis is implemented for labelling targets using the morphology technique.
Reconstruction of Conductivity Changes Using an Advanced Compensation Method in Electrical Impedance Tomography2014-04-26Element displacement and contact impedance changes are compensated in the reconstruction approach. Images have been reconstructed using the proposed method with the data from numerical simulation, saline phantom and in vivo human measurement.