A system 100 for processing medical images, the system being arranged for obtaining a first medical image 102 and a second medical image 104, the first medical image and the second medical image being rigidly registered medical images of an anatomical structure, and the system comprising a displacement estimator 120 for establishing displacement vectors 122 for at least a first portion of the first medical image, the displacement vectors matching the first portion of the first medical image to a second portion of the second medical image, a deformation estimator 140 for, in dependence on the displacement vectors, establishing deformation values 142 for the first portion, the deformation values representing a deformation of the first portion with respect to the second portion, and a visualization generator 160 for generating visualization data 162 for, when being displayed on a display 180, establishing a multi-dimensional graph 182 comprising magnitudes of the displacement vectors as first variables 184 and the deformation values as second variables 186.