1. A computer-automated image visualization method for displaying images from an image data set comprising a plurality of image elements, each image element having an associated image value, the method comprising: a) providing a visualization application with a library of presets, each preset defining a mapping between image values and their representation in a graphical user interface; b) loading an image data set from a data file containing the image data set; c) displaying an initial representation of the loaded image data set on a graphical user interface; d) receiving user input from a location in the representation to indicate a region of interest in the Image data set; e) determining properties of image elements in the region of interest; f) making a list of potentially suitable presets from the library of presets based on the determined properties of the region of interest; and g) presenting the potentially suitable presets to the user for selection.