1. A method for generating an image of a three-dimensional object, said method comprising the steps of: acquiring volumetric first scan data for the object; utilizing said first scan data to reconstruct first virtual image data representing structural information in said first scan data; selecting a viewpoint for displaying an image of said object based on said first virtual image data; manipulating said first virtual image data to generate a first three-dimensional perspective image of said object from said viewpoint; and displaying said first three-dimensional perspective image.