1. A method for reconstructing imaging signals in a biological medium on the basis of experimental measurements perturbed by movements, comprising: implementing measurements representative of said movements; at least one movement model comprising movement parameters capable of describing movements and/or deformations of the biological medium on the basis of said measurements representative of movements and an imaging sampling grid; constructing a movement sampling grid by selecting a limited set of points from the imaging sampling grid; and calculating movement parameters by inversion of a linear system at the points of said movement sampling grid, the points selected for constructing the movement sampling grid being chosen as a function of the following criterion: their proximity to areas of the biological medium affected by comparatively greater movement variations and/or local deformations.