Photofluorography

Photofluorography (sometimes called just fluorography) is photography of X-ray images from a fluorescent screen.

[1] It is commonly used in some countries for chest X-ray screening, e.g. to diagnose tuberculosis (see Abreugraphy for more information on such usage of this technique).

This is caused by the formation of a light image of the transmitted radiation pattern.

This shows a magnified image of what appears on the input phosphor.

The image size depends on the focal length of the camera lens.