An electronic device used to produce a fluoroscopic image with a low radiation exposure. A beam of x rays passing through the patient is converted in a special vacuum tube into a pattern of electrons. These electrons are accelerated and concentrated onto a small fluorescent screen where they present a bright image. This is generally displayed on a TV monitor.
A special vacuum tube used during fluoroscopic imaging that increases the brightness of an image. This increased brightness is controlled by image minification and electron acceleration. The minified image can be viewed directly, coupled with a television camera, or imaged by serial or digital radiography. The quality of the image is better than that of an un-intensified fluoroscopic image.
An electronic system that generates fluorescent images through the amplification of brightness levels, enabling their observation via a mirror-optical system or a television monitor, is employed for this purpose. The viewing process can be conducted under subdued room lighting conditions without requiring dark adaptation.