An x-ray (radiograph) is a noninvasive medical test that helps physicians diagnose and treat medical conditions. Imaging with x-rays involves exposing a part of the body to a small dose of ionizing radiation to produce pictures of the inside of the body. X-rays are the oldest and most frequently used form of medical imaging. XRays are most commonly used today to evaluate the lungs and chest as well as to evaluate for fractures (broken bones). Most xray examinations take 5-10 minutes to complete (for each body region that is being examined).