X-ray
What are X-rays?
X-ray, or plain radiography, is a diagnostic test that uses x-ray radiation, a form of energy, to produce images of the body. X-rays are commonly used in evaluation of the chest, the musculoskeletal system, gastrointestinal and urinary tracts.
Many precautions are taken so that X-rays will not harm patients. X-ray systems are designed to focus precisely on a specific part of the body and to prevent excessive electromagnetic radiation from being released.
How X-rays work
An X-ray image is produced when a small amount of radiation passes through a body part and is recorded to produce a black-and-white anatomical image. Areas that are difficult for x-rays to penetrate, such as bone, appear white on the x-ray film. Areas that the x-rays penetrate easily, such as the lungs or other areas filled with air, appear black. Soft tissue, vessels and organs appear as various shades of gray on an X-ray image, depending upon their composition and density.
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