How does a conventional film-screen system work?

A conventional film-screen system works by utilizing X-rays to expose a special film, which results in an image that represents the internal structures of the body. In this system, when the X-ray beam passes through the body, different tissues absorb varying amounts of radiation. The X-rays that exit the body then strike the film, causing a chemical change in the film emulsion. After exposure, the film is developed chemically, revealing the image based on the density variations created by the different tissues encountered by the X-rays. This process is fundamental in radiography, as it allows healthcare professionals to visualize and diagnose conditions affecting internal organs and tissues in a non-invasive manner.