1. A system for medical diagnosis and tracking, comprising: at least one medical imaging device adapted to create at least one current image; a historical images archive adapted to storing at least one of: said at least one current image, and at least one historical image; a three-dimensional subtraction application adapted to create at least one three-dimensional subtracted image by performing three-dimensional subtraction on said at least one current image and said at least one historical image; and a Picture Archiving Communication System (PACS) workstation adapted to display said at least one three-dimensional subtracted image.