There has been much technological advancement in medical imaging in recent years, however, diagnostic X-ray (radiography) continues to be the most commonly performed procedure in radiology departments. X-rays allow physicians to see straight into the human body and can be used to help diagnose and treat bone trauma, soft tissue abnormalities, or chest and abdomen problems. An x-ray is created when a small amount of ionizing radiation passes through the human body and an image is then created on a film or computer. X-rays are a quick and painless test, often requiring no preparation for the patient. If a patient is pregnant, or thinks she may be pregnant, always tell your physician or technologist before a radiology exam is performed.