X-rays are a kind of electromagnetic radiation, just similar to visible light. In a health care environment, a machine transfers individual X-ray particles, named photons. These particles crawl through the human body. A computer or special film is used to capture the images that are created in the process. Structures that are solid (such as bone) will obstruct the X-ray particles making those solid structures appear white. Metal and contrast mechanisms (special dye are utilised to highlight regions of the body) will also appear in white. Structures comprising air will be black. Muscle, fat, and fluid will appear as variations of grey.
An X-ray may be used for
Fractures, infections, arthritis, teeth infection and decay, osteoporosis, bone cancer and others.
Lung infections, enlarged heart, lung cancer, others.
Digestive tract abnormalities, radiopaque items (items accidentally swallowed, visible on X-ray), other.