1. An image data processing system for automatically displaying potentially hidden features in 3D (three dimensional) medical image data, comprising: a repository including a 3D (three dimensional) image dataset representing an anatomical volume of interest; an image data processor for processing said 3D image dataset retrieved from said repository by, (a) automatically detecting if a first object is obscured by a second object in the 3D image dataset, (b) automatically determining if said first object is visible by rotating said anatomical volume of interest and (c) rotating said anatomical volume of interest until said first object is visible in response to a command; and a display processor for initiating display of the rotated anatomical volume of interest.