Abstract: A method of developing a foreground image from two views of an object, such as orthogonal x-ray views, for the making of a projectable three-dimension image on a computer display monitor superimposed on a background image. The foreground image can be included on the original view of the object or can be separate therefrom or can be represented by digital mathematical expression. The method finds particular application in medical applications such as brachytherapy dosimetry, breast biopsy localizing, and external dosimetry computation for radiotherapy. When used with a dosimetry application, isodose lines can be computed and imaged for various simulated positioning and orientation of the radiation sources and simulated dose sizes.