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.
Gamma rays are also used in PET scans and bone scans to detect malignancies. Medical personnel use an isotope of cobalt called cobalt 60 as a source of these gamma rays. Gamma rays are also used in autoclaves to sterilize medical instruments. These high-energy rays are also used in the food industry to irradiate food.