Angina may feel like pressure or squeezing in your chest. The pain also can occur in your shoulders, arms, neck, jaw, or back. Angina pain may even feel like indigestion. Angina isn't a disease; it's a symptom of an underlying heart problem.
Uses of X-rays. The main use of X-rays is in medicine. A comman application is in the form of X-ray machines, which take photos of a patientâs body. If an arm or leg were broken for example, then this limb would be put in front of the X-ray with a piece of photographic film behind.
X-rays are also used in fluoroscopy. This allows doctors to see moving images of the internal structures of patients. The patient stands between an X-ray source and a fluorescent screen and a large number of images are taken to form a short film. These are often used to investigate problems with the digestive system.