For characterizing spatial temporal dynamics of a medium (1) excitable for deformation an elastic model of the medium is defined. The medium is imaged at consecutive points in time to obtain a series of images. Shifts of structures of the medium (1) between the images of the series are determined. A dynamic description of a temporal development of spatial deformations of a predefined elastic model of the medium (1) is adapted to match the shifts of the structures and temporal developments of rate of deformation patterns in the medium (1) are identified from the dynamic description.
