The proposed system uses an actuator to induce sinusoidal motion in the breast tissue at a fixed frequency. The resulting surface motion is quantified using digital imaging sensors, and an elastographic reconstruction of the 3-D breast tissue elastic properties created. An advantage of this digital image based system is that as the fundamental silicon technologies improve in performance, so will the systems capability. The focus of this paper is on the algorithms for obtaining tissue motion information, however proof of concept simulations are presented for the entire system.