1. A method for reconstructing shapes in a three dimensional set of image data, the steps comprising: (a) using a data set of two dimensional images to provide a displayed image; (b) applying indications on the displayed image; (c) developing a surface reconstruction from said indications of the displayed image; (d) polygonizing the surface reconstruction of the displayed image; (e) using the polygonized surface of the displayed image to develop the displayed image into a reconstructed shape; and (f) displaying the reconstructed shape.