In order to know better the unrolling of the growth, we dispode several radiographics elements which is sometimes difficult to connect with themselves. Using the computer, may give us the solution to this problem. We describe here a soft which authorizes the 3D reconstruction dating from X-ray radiographic pictures. During step called orthogonalization, the three pictures from the front, from profile and from under, are retalling by the soft. When it's realized, any visible point from two views will automatically be visible in the third view.