Diagnostic x-ray (radiography) continues to be the most commonly performed procedure in radiology departments, allowing physicians to see straight into the human body they 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. Always tell your physician or technologist before a radiology exam is performed if you are pregnant, or you think you may be pregnant.