Pneumonia is an infection in one or both lungs. It can be caused by bacteria, viruses, or fungi or any other such thing. Bacterial pneumonia is the most common type in adults. Pneumonia causes inflammation in the air sacs in your lungs
Nuclear medicine is a medical speciality that involves giving a patient a small amount of radioactive medication, called a radio pharmaceutical.
So basically a person might go for his or her doctor. As it helps your doctor evaluate how a particular area of your body or organ system is working.
