A three-dimensional image reconstruction algorithm for electrical impedance tomography data collected on planar electrode arrays

Abstract

We present a three-dimensional non-iterative reconstruction algorithm developed for conductivity imagingwith real data collected on a planar rectangular array of electrodes. Such an electrode configuration as well as the proposed imaging technique is intended to be used for breast cancer detection. The algorithm is based on linearizing the conductivity about a constant value and allows realtime reconstructions. The performance of the algorithm was tested on numerically simulated data and we successfully detected small inclusions with conductivities three or four times the background lying beneath the data collection surface. The results were fairly stable with respect to the noise level in the data and displayed very good spatial resolution in the plane of electrodes.