1. A method for visually representing magnetic resonance data, comprising: providing a processor with magnetic resonance data acquired from a subject, said magnetic resonance data representing a spatially resolved distribution of values of multiple tissue parameters in the subject; in said processor, creating a tree structure comprising a trunk and a plurality of tree elements that branch from the trunk, and assigning a first tissue parameter, among said multiple tissue parameters, to said trunk, and assigning a second tissue parameter, among said multiple tissue parameters, to said plurality of tree elements; in said processor, adapting said tree structure with respect to the acquired values of the multiple tissue parameters independently of said spatially resolved distribution, thereby compiling an adapted tree structure; and visually displaying said adapted tree structure at a display monitor in communication with said processor.