What are x rays and what do they do

X rays are forms of radiant energy, like light or radio waves. Unlike light, x rays can penetrate the body, which allows a radiologist to produce pictures of internal structures. The radiologist can view these on photographic film or on a TV or computer monitor. X ray examinations provide valuable information about your health and play an important role in helping your doctor make an accurate diagnosis. In some cases x rays are used to assist with the placement of tubes or other devices in the body or with other therapeutic procedures.