[Stereoradiography]

The first attempts at stereography date back to the early days of radiography itself; already at the turn of the century, a series of papers on this subject had been published. This is not surprising, as the problem of reading correctly a plain X-ray film was rapidly recognized. A plain X-ray film is a summation of all the more or less opaque structures contained in the different planes of an object. Stereoradiography not any copes with this problem, but enables a three-dimensional localization of all these structures. Stereofluorography and stereocineradiography may also be performed. The different stages in the development of hard and soft ware to achieve these goals are described and an example is provided.