An X-ray is a fast, painless imaging test that uses a small amount of electromagnetic radiation to produce images of the body’s internal structures, primarily bones, teeth, and certain organs. The beams pass through the body and are absorbed differently based on tissue density: dense materials like bone appear white, soft tissues appear gray, and air appears black. Commonly used to diagnose fractures, infections like pneumonia, or tumors, X-rays are a staple of diagnostic imaging with minimal preparation and generally safe, low-dose exposure.
