Electrical impedance tomography is a technique that permits estimation of r
esistivity within a subject by reconstructing from boundary measurements. D
ue to the ill conditioning of the problem, images are greatly affected by b
oundary errors. Reconstruction algorithms account for boundary shape and el
ectrode position by using a forward solver. In this paper is presented the
realization of a 2D realistic thoracic model as a better approach compared
to circular meshing. Several meshes with different discretizations are comp
ared in terms of accuracy with a complete electrode model forward solver. B
y comparing the different discretizations it is possible to choose an appro
priate mesh density for the 2D EIT problem.