A system for use during a medical or surgical procedure on a body. The system modifies a reference image data set according to a density image of a body element during a procedure, generates a displaced image data set representing the position and geometry of the body element during the procedure, and...http://www.google.com/patents/US8046053?utm_source=gb-gplus-sharePatent US8046053 - System and method for modifying images of a body part
