A study about coefficients to estimate the error in biomechanical models used to virtually simulate the organ behaviors.

In this paper, a set of coefficients commonly used in Medical Image to estimate the committed error comparing two images is presented, which, combined together, allow to determine the similarity between volumes. Furthermore, an analysis of the behavior of these coefficients is performed to determine those coefficients that better discriminate the fit error, proving that these are Jaccard coefficient and a modification of Hausdorff coefficient. In addition, the combination of both coefficients is applied to compare two given biomechanical models of the lamb liver.