EVALUATION OF THE VISIBILITY OF A STEREOSCOPIC IMAGE (II. Radiographic Technology for Stereoscopic Magnification)

Abstract

Stereoscpic radiography of a plain skull and chest were examined. The relationship between the visibility of a stereoscopic image and contrast, and between the former and the shape of the object ware studied. The relationship between the visibility of a stereoscopic image and the sliding direction of the X-ray tube was also examined. Skull and chest phantoms are used in this study. In the case of A-P skull view, we can get the stereoscopic view very easily, when the beam was titled cranially with 45°of the base line. It was very easy to see the chest radiography when the X-ray tube was slid with the direction of 45°oblique to the axis. When the contrast of the image was 0.05 or less, it was difficult to get any stereoscopic images.