[Xero-radiography of the thorax(author's transl)]

In over 150 patients, comparative chest examinations were carried out using films and xerography. The following results were obtained: Using xerography, image quality depends significantly on the size and shape of the imaging structure and on its marginal sharpness. Using a sectional technique and xerography, pulmonary vessels, bronchi, hilar structures and various linear changes are more clearly demonstrated than with ordinary film. Xerography has no advantage in showing changes occupying a large area. Routine use of xerography for chest examinations is limited by the size of the selenium plates and the higher radiation dose required.