General radiography, or x-ray, uses a controlled beam of energy that is passed through the body. Because the bones, organs and tissues within our bodies are composed of differing densities, the x-ray beams move through them differently. Bones for instance will absorb more of the beam than an organ or soft tissue making them appear white or gray on x-ray image while the tissue appears darker.
After passing through the body, the x-ray beams are captured on either film or a computerized receptor. The most subtle internal differences can be seen with remarkable detail in varying degrees of black and white.
Over the years, general radiography has continued to see technological advancement mostly notable in the area of radiation exposure. Although the science still uses radiation, the amount for most exams is now generally less than you would receive over the course of the year from the sun. There is no doubt the benefits of radiography in healthcare far outweigh the risks. |